Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (220 commits)
USB: backlight, appledisplay: fix incomplete registration failure handling
USB: pl2303: remove unnecessary reset of usb_device in urbs
USB: ftdi_sio: remove obsolete check in unthrottle
USB: ftdi_sio: remove unused tx_bytes counter
USB: qcaux: driver for auxiliary serial ports on Qualcomm devices
USB: pl2303: initial TIOCGSERIAL support
USB: option: add Longcheer/Longsung vendor ID
USB: fix I2C API usage in ohci-pnx4008.
USB: usbmon: mask seconds properly in text API
USB: sisusbvga: no unnecessary GFP_ATOMIC
USB: storage: onetouch: unnecessary GFP_ATOMIC
USB: serial: ftdi: add CONTEC vendor and product id
USB: remove references to port->port.count from the serial drivers
USB: tty: Prune uses of tty_request_room in the USB layer
USB: tty: Add a function to insert a string of characters with the same flag
USB: don't read past config->interface[] if usb_control_msg() fails in usb_reset_configuration()
USB: tty: kill request_room for USB ACM class
USB: tty: sort out the request_room handling for whiteheat
USB: storage: fix misplaced parenthesis
USB: vstusb.c: removal of driver for Vernier Software & Technology, Inc., devices and spectrometers
...

Documentation/ABI/testing/sysfs-bus-usb

···
 		device.  This is useful to ensure auto probing won't
 		match the driver to the device.  For example:
 		# echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id
+
+What:		/sys/bus/usb/device/.../avoid_reset
+Date:		December 2009
+Contact:	Oliver Neukum <[e-mail]>
+Description:
+		Writing 1 to this file tells the kernel that this
+		device will morph into another mode when it is reset.
+		Drivers will not use reset for error handling for
+		such devices.
+Users:
+		usb_modeswitch

Documentation/ioctl/ioctl-number.txt

···
 'K'	all	linux/kd.h
 'L'	00-1F	linux/loop.h		conflict!
 'L'	10-1F	drivers/scsi/mpt2sas/mpt2sas_ctl.h	conflict!
-'L'	20-2F	linux/usb/vstusb.h
 'L'	E0-FF	linux/ppdd.h		encrypted disk device driver
 					<http://linux01.gwdg.de/~alatham/ppdd.html>
 'M'	all	linux/soundcard.h	conflict!

Documentation/networking/00-INDEX

···
 	- the Crystal LAN (CS8900/20-based) Ethernet ISA adapter driver
 cxacru.txt
 	- Conexant AccessRunner USB ADSL Modem
+cxacru-cf.py
+	- Conexant AccessRunner USB ADSL Modem configuration file parser
 de4x5.txt
 	- the Digital EtherWORKS DE4?? and DE5?? PCI Ethernet driver
 decnet.txt

Documentation/networking/cxacru-cf.py

···
+#!/usr/bin/env python
+# Copyright 2009 Simon Arlott
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 2 of the License, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 59
+# Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+# Usage: cxacru-cf.py < cxacru-cf.bin
+# Output: values string suitable for the sysfs adsl_config attribute
+#
+# Warning: cxacru-cf.bin with MD5 hash cdbac2689969d5ed5d4850f117702110
+# contains mis-aligned values which will stop the modem from being able
+# to make a connection. If the first and last two bytes are removed then
+# the values become valid, but the modulation will be forced to ANSI
+# T1.413 only which may not be appropriate.
+#
+# The original binary format is a packed list of le32 values.
+
+import sys
+import struct
+
+i = 0
+while True:
+	buf = sys.stdin.read(4)
+
+	if len(buf) == 0:
+		break
+	elif len(buf) != 4:
+		sys.stdout.write("\n")
+		sys.stderr.write("Error: read {0} not 4 bytes\n".format(len(buf)))
+		sys.exit(1)
+
+	if i > 0:
+		sys.stdout.write(" ")
+	sys.stdout.write("{0:x}={1}".format(i, struct.unpack("<I", buf)[0]))
+	i += 1
+
+sys.stdout.write("\n")

Documentation/networking/cxacru.txt

···
 module loaded, the device will sometimes stop responding after unloading the
 driver and it is necessary to unplug/remove power to the device to fix this.
 
+Note: support for cxacru-cf.bin has been removed. It was not loaded correctly
+so it had no effect on the device configuration. Fixing it could have stopped
+existing devices working when an invalid configuration is supplied.
+
+There is a script cxacru-cf.py to convert an existing file to the sysfs form.
+
 Detected devices will appear as ATM devices named "cxacru". In /sys/class/atm/
 these are directories named cxacruN where N is the device number. A symlink
 named device points to the USB interface device's directory which contains
···
 * adsl_headend
 * adsl_headend_environment
 	Information about the remote headend.
+
+* adsl_config
+	Configuration writing interface.
+	Write parameters in hexadecimal format <index>=<value>,
+	separated by whitespace, e.g.:
+		"1=0 a=5"
+	Up to 7 parameters at a time will be sent and the modem will restart
+	the ADSL connection when any value is set. These are logged for future
+	reference.
 
 * downstream_attenuation (dB)
 * downstream_bits_per_frame
···
 * mac_address
 
 * modulation
+	"" (when not connected)
 	"ANSI T1.413"
 	"ITU-T G.992.1 (G.DMT)"
 	"ITU-T G.992.2 (G.LITE)"

Documentation/usb/error-codes.txt

···
 
 -EFBIG		Host controller driver can't schedule that many ISO frames.
 
--EPIPE		Specified endpoint is stalled.  For non-control endpoints,
-		reset this status with usb_clear_halt().
+-EPIPE		The pipe type specified in the URB doesn't match the
+		endpoint's actual type.
 
 -EMSGSIZE	(a) endpoint maxpacket size is zero; it is not usable
 		    in the current interface altsetting.
···
 -EPERM		Submission failed because urb->reject was set.
 
 -EHOSTUNREACH	URB was rejected because the device is suspended.
+
+-ENOEXEC	A control URB doesn't contain a Setup packet.
 
 
 **************************************************************************

Documentation/usb/power-management.txt

···
 
 		 Alan Stern <[e-mail]>
 
-			    November 10, 2009
+			    December 11, 2009
 
 
 
···
 information about system PM).
 
 Note: Dynamic PM support for USB is present only if the kernel was
-built with CONFIG_USB_SUSPEND enabled.  System PM support is present
-only if the kernel was built with CONFIG_SUSPEND or CONFIG_HIBERNATION
-enabled.
+built with CONFIG_USB_SUSPEND enabled (which depends on
+CONFIG_PM_RUNTIME).  System PM support is present only if the kernel
+was built with CONFIG_SUSPEND or CONFIG_HIBERNATION enabled.
 
 
 	What is Remote Wakeup?
···
 also change the idle-delay time; 2 seconds is not the best choice for
 every device.
 
+If a driver knows that its device has proper suspend/resume support,
+it can enable autosuspend all by itself.  For example, the video
+driver for a laptop's webcam might do this, since these devices are
+rarely used and so should normally be autosuspended.
+
 Sometimes it turns out that even when a device does work okay with
 autosuspend there are still problems.  For example, there are
 experimental patches adding autosuspend support to the usbhid driver,
···
 	void usb_autopm_get_interface_no_resume(struct usb_interface *intf);
 	void usb_autopm_put_interface_no_suspend(struct usb_interface *intf);
 
-The functions work by maintaining a counter in the usb_interface
-structure.  When intf->pm_usage_count is > 0 then the interface is
-deemed to be busy, and the kernel will not autosuspend the interface's
-device.  When intf->pm_usage_count is <= 0 then the interface is
-considered to be idle, and the kernel may autosuspend the device.
+The functions work by maintaining a usage counter in the
+usb_interface's embedded device structure.  When the counter is > 0
+then the interface is deemed to be busy, and the kernel will not
+autosuspend the interface's device.  When the usage counter is = 0
+then the interface is considered to be idle, and the kernel may
+autosuspend the device.
 
-(There is a similar pm_usage_count field in struct usb_device,
+(There is a similar usage counter field in struct usb_device,
 associated with the device itself rather than any of its interfaces.
-This field is used only by the USB core.)
+This counter is used only by the USB core.)
 
-Drivers must not modify intf->pm_usage_count directly; its value
-should be changed only be using the functions listed above.  Drivers
-are responsible for insuring that the overall change to pm_usage_count
-during their lifetime balances out to 0 (it may be necessary for the
-disconnect method to call usb_autopm_put_interface() one or more times
-to fulfill this requirement).  The first two routines use the PM mutex
-in struct usb_device for mutual exclusion; drivers using the async
-routines are responsible for their own synchronization and mutual
-exclusion.
+Drivers need not be concerned about balancing changes to the usage
+counter; the USB core will undo any remaining "get"s when a driver
+is unbound from its interface.  As a corollary, drivers must not call
+any of the usb_autopm_* functions after their diconnect() routine has
+returned.
 
-	usb_autopm_get_interface() increments pm_usage_count and
-	attempts an autoresume if the new value is > 0 and the
-	device is suspended.
+Drivers using the async routines are responsible for their own
+synchronization and mutual exclusion.
 
-	usb_autopm_put_interface() decrements pm_usage_count and
-	attempts an autosuspend if the new value is <= 0 and the
-	device isn't suspended.
+	usb_autopm_get_interface() increments the usage counter and
+	does an autoresume if the device is suspended.  If the
+	autoresume fails, the counter is decremented back.
+
+	usb_autopm_put_interface() decrements the usage counter and
+	attempts an autosuspend if the new value is = 0.
 
 	usb_autopm_get_interface_async() and
 	usb_autopm_put_interface_async() do almost the same things as
-	their non-async counterparts.  The differences are: they do
-	not acquire the PM mutex, and they use a workqueue to do their
+	their non-async counterparts.  The big difference is that they
+	use a workqueue to do the resume or suspend part of their
 	jobs.  As a result they can be called in an atomic context,
 	such as an URB's completion handler, but when they return the
-	device will not generally not yet be in the desired state.
+	device will generally not yet be in the desired state.
 
 	usb_autopm_get_interface_no_resume() and
 	usb_autopm_put_interface_no_suspend() merely increment or
-	decrement the pm_usage_count value; they do not attempt to
-	carry out an autoresume or an autosuspend.  Hence they can be
-	called in an atomic context.
+	decrement the usage counter; they do not attempt to carry out
+	an autoresume or an autosuspend.  Hence they can be called in
+	an atomic context.
 
-The conventional usage pattern is that a driver calls
+The simplest usage pattern is that a driver calls
 usb_autopm_get_interface() in its open routine and
-usb_autopm_put_interface() in its close or release routine.  But
-other patterns are possible.
+usb_autopm_put_interface() in its close or release routine.  But other
+patterns are possible.
 
 The autosuspend attempts mentioned above will often fail for one
 reason or another.  For example, the power/level attribute might be
 set to "on", or another interface in the same device might not be
 idle.  This is perfectly normal.  If the reason for failure was that
-the device hasn't been idle for long enough, a delayed workqueue
-routine is automatically set up to carry out the operation when the
-autosuspend idle-delay has expired.
+the device hasn't been idle for long enough, a timer is scheduled to
+carry out the operation automatically when the autosuspend idle-delay
+has expired.
 
 Autoresume attempts also can fail, although failure would mean that
 the device is no longer present or operating properly.  Unlike
-autosuspend, there's no delay for an autoresume.
+autosuspend, there's no idle-delay for an autoresume.
 
 
 	Other parts of the driver interface
 	-----------------------------------
+
+Drivers can enable autosuspend for their devices by calling
+
+	usb_enable_autosuspend(struct usb_device *udev);
+
+in their probe() routine, if they know that the device is capable of
+suspending and resuming correctly.  This is exactly equivalent to
+writing "auto" to the device's power/level attribute.  Likewise,
+drivers can disable autosuspend by calling
+
+	usb_disable_autosuspend(struct usb_device *udev);
+
+This is exactly the same as writing "on" to the power/level attribute.
 
 Sometimes a driver needs to make sure that remote wakeup is enabled
 during autosuspend.  For example, there's not much point
···
 Normally a driver would set this flag in its probe method, at which
 time the device is guaranteed not to be autosuspended.)
 
-The synchronous usb_autopm_* routines have to run in a sleepable
-process context; they must not be called from an interrupt handler or
-while holding a spinlock.  In fact, the entire autosuspend mechanism
-is not well geared toward interrupt-driven operation.  However there
-is one thing a driver can do in an interrupt handler:
+If a driver does its I/O asynchronously in interrupt context, it
+should call usb_autopm_get_interface_async() before starting output and
+usb_autopm_put_interface_async() when the output queue drains.  When
+it receives an input event, it should call
 
 	usb_mark_last_busy(struct usb_device *udev);
 
-This sets udev->last_busy to the current time.  udev->last_busy is the
-field used for idle-delay calculations; updating it will cause any
-pending autosuspend to be moved back.  The usb_autopm_* routines will
-also set the last_busy field to the current time.
+in the event handler.  This sets udev->last_busy to the current time.
+udev->last_busy is the field used for idle-delay calculations;
+updating it will cause any pending autosuspend to be moved back.  Most
+of the usb_autopm_* routines will also set the last_busy field to the
+current time.
 
-Calling urb_mark_last_busy() from within an URB completion handler is
-subject to races: The kernel may have just finished deciding the
-device has been idle for long enough but not yet gotten around to
-calling the driver's suspend method.  The driver would have to be
-responsible for synchronizing its suspend method with its URB
-completion handler and causing the autosuspend to fail with -EBUSY if
-an URB had completed too recently.
+Asynchronous operation is always subject to races.  For example, a
+driver may call one of the usb_autopm_*_interface_async() routines at
+a time when the core has just finished deciding the device has been
+idle for long enough but not yet gotten around to calling the driver's
+suspend method.  The suspend method must be responsible for
+synchronizing with the output request routine and the URB completion
+handler; it should cause autosuspends to fail with -EBUSY if the
+driver needs to use the device.
 
 External suspend calls should never be allowed to fail in this way,
 only autosuspend calls.  The driver can tell them apart by checking
···
 method; this bit will be set for internal PM events (autosuspend) and
 clear for external PM events.
 
-Many of the ingredients in the autosuspend framework are oriented
-towards interfaces: The usb_interface structure contains the
-pm_usage_cnt field, and the usb_autopm_* routines take an interface
-pointer as their argument.  But somewhat confusingly, a few of the
-pieces (i.e., usb_mark_last_busy()) use the usb_device structure
-instead.  Drivers need to keep this straight; they can call
-interface_to_usbdev() to find the device structure for a given
-interface.
 
+	Mutual exclusion
+	----------------
 
-	Locking requirements
-	--------------------
-
-All three suspend/resume methods are always called while holding the
-usb_device's PM mutex.  For external events -- but not necessarily for
-autosuspend or autoresume -- the device semaphore (udev->dev.sem) will
-also be held.  This implies that external suspend/resume events are
-mutually exclusive with calls to probe, disconnect, pre_reset, and
-post_reset; the USB core guarantees that this is true of internal
-suspend/resume events as well.
+For external events -- but not necessarily for autosuspend or
+autoresume -- the device semaphore (udev->dev.sem) will be held when a
+suspend or resume method is called.  This implies that external
+suspend/resume events are mutually exclusive with calls to probe,
+disconnect, pre_reset, and post_reset; the USB core guarantees that
+this is true of autosuspend/autoresume events as well.
 
 If a driver wants to block all suspend/resume calls during some
-critical section, it can simply acquire udev->pm_mutex. Note that
-calls to resume may be triggered indirectly. Block IO due to memory
-allocations can make the vm subsystem resume a device. Thus while
-holding this lock you must not allocate memory with GFP_KERNEL or
-GFP_NOFS.
-
-Alternatively, if the critical section might call some of the
-usb_autopm_* routines, the driver can avoid deadlock by doing:
-
-	down(&udev->dev.sem);
-	rc = usb_autopm_get_interface(intf);
-
-and at the end of the critical section:
-
-	if (!rc)
-		usb_autopm_put_interface(intf);
-	up(&udev->dev.sem);
-
-Holding the device semaphore will block all external PM calls, and the
-usb_autopm_get_interface() will prevent any internal PM calls, even if
-it fails.  (Exercise: Why?)
-
-The rules for locking order are:
-
-	Never acquire any device semaphore while holding any PM mutex.
-
-	Never acquire udev->pm_mutex while holding the PM mutex for
-	a device that isn't a descendant of udev.
-
-In other words, PM mutexes should only be acquired going up the device
-tree, and they should be acquired only after locking all the device
-semaphores you need to hold.  These rules don't matter to drivers very
-much; they usually affect just the USB core.
-
-Still, drivers do need to be careful.  For example, many drivers use a
-private mutex to synchronize their normal I/O activities with their
-disconnect method.  Now if the driver supports autosuspend then it
-must call usb_autopm_put_interface() from somewhere -- maybe from its
-close method.  It should make the call while holding the private mutex,
-since a driver shouldn't call any of the usb_autopm_* functions for an
-interface from which it has been unbound.
-
-But the usb_autpm_* routines always acquire the device's PM mutex, and
-consequently the locking order has to be: private mutex first, PM
-mutex second.  Since the suspend method is always called with the PM
-mutex held, it mustn't try to acquire the private mutex.  It has to
-synchronize with the driver's I/O activities in some other way.
+critical section, the best way is to lock the device and call
+usb_autopm_get_interface() (and do the reverse at the end of the
+critical section).  Holding the device semaphore will block all
+external PM calls, and the usb_autopm_get_interface() will prevent any
+internal PM calls, even if it fails.  (Exercise: Why?)
 
 
 	Interaction between dynamic PM and system PM
···
 Dynamic power management and system power management can interact in
 a couple of ways.
 
-Firstly, a device may already be manually suspended or autosuspended
-when a system suspend occurs.  Since system suspends are supposed to
-be as transparent as possible, the device should remain suspended
-following the system resume.  The 2.6.23 kernel obeys this principle
-for manually suspended devices but not for autosuspended devices; they
-do get resumed when the system wakes up.  (Presumably they will be
-autosuspended again after their idle-delay time expires.)  In later
-kernels this behavior will be fixed.
-
-(There is an exception.  If a device would undergo a reset-resume
-instead of a normal resume, and the device is enabled for remote
-wakeup, then the reset-resume takes place even if the device was
-already suspended when the system suspend began.  The justification is
-that a reset-resume is a kind of remote-wakeup event.  Or to put it
-another way, a device which needs a reset won't be able to generate
-normal remote-wakeup signals, so it ought to be resumed immediately.)
+Firstly, a device may already be autosuspended when a system suspend
+occurs.  Since system suspends are supposed to be as transparent as
+possible, the device should remain suspended following the system
+resume.  But this theory may not work out well in practice; over time
+the kernel's behavior in this regard has changed.
 
 Secondly, a dynamic power-management event may occur as a system
 suspend is underway.  The window for this is short, since system

arch/arm/configs/rx51_defconfig

···
 # CONFIG_LAPB is not set
 # CONFIG_ECONET is not set
 # CONFIG_WAN_ROUTER is not set
+CONFIG_PHONET=y
+# CONFIG_IEEE802154 is not set
 # CONFIG_NET_SCHED is not set
 # CONFIG_DCB is not set
 
···
 # CONFIG_USB_GADGET_LH7A40X is not set
 # CONFIG_USB_GADGET_OMAP is not set
 # CONFIG_USB_GADGET_PXA25X is not set
+# CONFIG_USB_GADGET_R8A66597 is not set
 # CONFIG_USB_GADGET_PXA27X is not set
-# CONFIG_USB_GADGET_S3C2410 is not set
+# CONFIG_USB_GADGET_S3C_HSOTG is not set
 # CONFIG_USB_GADGET_IMX is not set
+# CONFIG_USB_GADGET_S3C2410 is not set
 # CONFIG_USB_GADGET_M66592 is not set
 # CONFIG_USB_GADGET_AMD5536UDC is not set
 # CONFIG_USB_GADGET_FSL_QE is not set
 # CONFIG_USB_GADGET_CI13XXX is not set
 # CONFIG_USB_GADGET_NET2280 is not set
 # CONFIG_USB_GADGET_GOKU is not set
+# CONFIG_USB_GADGET_LANGWELL is not set
 # CONFIG_USB_GADGET_DUMMY_HCD is not set
 CONFIG_USB_GADGET_DUALSPEED=y
 CONFIG_USB_ZERO=m
 # CONFIG_USB_ZERO_HNPTEST is not set
+# CONFIG_USB_AUDIO is not set
 # CONFIG_USB_ETH is not set
 # CONFIG_USB_GADGETFS is not set
 CONFIG_USB_FILE_STORAGE=m
 # CONFIG_USB_FILE_STORAGE_TEST is not set
+# CONFIG_USB_MASS_STORAGE is not set
 # CONFIG_USB_G_SERIAL is not set
 # CONFIG_USB_MIDI_GADGET is not set
 # CONFIG_USB_G_PRINTER is not set
 # CONFIG_USB_CDC_COMPOSITE is not set
+CONFIG_USB_G_NOKIA=m
+# CONFIG_USB_G_MULTI is not set
 
 #
 # OTG and related infrastructure

arch/arm/mach-mx2/devices.c

···
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
+#include <linux/dma-mapping.h>
 
 #include <mach/irqs.h>
 #include <mach/hardware.h>
···
 	.num_resources = ARRAY_SIZE(mxc_fb),
 	.resource = mxc_fb,
 	.dev = {
-		.coherent_dma_mask = 0xFFFFFFFF,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
 	},
 };
 
···
 	},
 };
 
-static u64 mxc_sdhc1_dmamask = 0xffffffffUL;
+static u64 mxc_sdhc1_dmamask = DMA_BIT_MASK(32);
 
 struct platform_device mxc_sdhc_device0 = {
-       .name           = "mxc-mmc",
-       .id             = 0,
-       .dev            = {
-               .dma_mask = &mxc_sdhc1_dmamask,
-               .coherent_dma_mask = 0xffffffff,
-       },
-       .num_resources  = ARRAY_SIZE(mxc_sdhc1_resources),
-       .resource       = mxc_sdhc1_resources,
+	.name           = "mxc-mmc",
+	.id             = 0,
+	.dev            = {
+		.dma_mask = &mxc_sdhc1_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+	.num_resources  = ARRAY_SIZE(mxc_sdhc1_resources),
+	.resource       = mxc_sdhc1_resources,
 };
 
 static struct resource mxc_sdhc2_resources[] = {
···
 	},
 };
 
-static u64 mxc_sdhc2_dmamask = 0xffffffffUL;
+static u64 mxc_sdhc2_dmamask = DMA_BIT_MASK(32);
 
 struct platform_device mxc_sdhc_device1 = {
-       .name           = "mxc-mmc",
-       .id             = 1,
-       .dev            = {
-               .dma_mask = &mxc_sdhc2_dmamask,
-               .coherent_dma_mask = 0xffffffff,
-       },
-       .num_resources  = ARRAY_SIZE(mxc_sdhc2_resources),
-       .resource       = mxc_sdhc2_resources,
+	.name           = "mxc-mmc",
+	.id             = 1,
+	.dev            = {
+		.dma_mask = &mxc_sdhc2_dmamask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+	.num_resources  = ARRAY_SIZE(mxc_sdhc2_resources),
+	.resource       = mxc_sdhc2_resources,
 };
 
 #ifdef CONFIG_MACH_MX27
···
 	},
 };
 
-static u64 otg_dmamask = 0xffffffffUL;
+static u64 otg_dmamask = DMA_BIT_MASK(32);
 
 /* OTG gadget device */
 struct platform_device mxc_otg_udc_device = {
···
 	.id		= -1,
 	.dev		= {
 		.dma_mask		= &otg_dmamask,
-		.coherent_dma_mask	= 0xffffffffUL,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
 	},
 	.resource	= otg_resources,
 	.num_resources	= ARRAY_SIZE(otg_resources),
···
 	.name = "mxc-ehci",
 	.id = 0,
 	.dev = {
-		.coherent_dma_mask = 0xffffffff,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
 		.dma_mask = &otg_dmamask,
 	},
 	.resource = otg_resources,
···
 
 /* USB host 1 */
 
-static u64 usbh1_dmamask = 0xffffffffUL;
+static u64 usbh1_dmamask = DMA_BIT_MASK(32);
 
 static struct resource mxc_usbh1_resources[] = {
 	{
···
 	.name = "mxc-ehci",
 	.id = 1,
 	.dev = {
-		.coherent_dma_mask = 0xffffffff,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
 		.dma_mask = &usbh1_dmamask,
 	},
 	.resource = mxc_usbh1_resources,
···
 };
 
 /* USB host 2 */
-static u64 usbh2_dmamask = 0xffffffffUL;
+static u64 usbh2_dmamask = DMA_BIT_MASK(32);
 
 static struct resource mxc_usbh2_resources[] = {
 	{
···
 	.name = "mxc-ehci",
 	.id = 2,
 	.dev = {
-		.coherent_dma_mask = 0xffffffff,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
 		.dma_mask = &usbh2_dmamask,
 	},
 	.resource = mxc_usbh2_resources,
···
 {
 	return mxc_gpio_init(imx_gpio_ports, ARRAY_SIZE(imx_gpio_ports));
 }
+
+#ifdef CONFIG_MACH_MX21
+static struct resource mx21_usbhc_resources[] = {
+	{
+		.start	= USBOTG_BASE_ADDR,
+		.end	= USBOTG_BASE_ADDR + 0x1FFF,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start		= MXC_INT_USBHOST,
+		.end		= MXC_INT_USBHOST,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device mx21_usbhc_device = {
+	.name		= "imx21-hcd",
+	.id		= 0,
+	.dev		= {
+		.dma_mask = &mx21_usbhc_device.dev.coherent_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+	.num_resources	= ARRAY_SIZE(mx21_usbhc_resources),
+	.resource	= mx21_usbhc_resources,
+};
+#endif
+

arch/arm/mach-mx2/devices.h

···
 extern struct platform_device mxc_spi_device0;
 extern struct platform_device mxc_spi_device1;
 extern struct platform_device mxc_spi_device2;
+extern struct platform_device mx21_usbhc_device;
 extern struct platform_device imx_ssi_device0;
 extern struct platform_device imx_ssi_device1;

arch/arm/plat-mxc/include/mach/mx21-usbhost.h

···
+/*
+ *	Copyright (C) 2009 Martin Fuzzey <[e-mail]>
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ */
+
+#ifndef __ASM_ARCH_MX21_USBH
+#define __ASM_ARCH_MX21_USBH
+
+enum mx21_usbh_xcvr {
+	/* Values below as used by hardware (HWMODE register) */
+	MX21_USBXCVR_TXDIF_RXDIF = 0,
+	MX21_USBXCVR_TXDIF_RXSE = 1,
+	MX21_USBXCVR_TXSE_RXDIF = 2,
+	MX21_USBXCVR_TXSE_RXSE = 3,
+};
+
+struct mx21_usbh_platform_data {
+	enum mx21_usbh_xcvr host_xcvr; /* tranceiver mode host 1,2 ports */
+	enum mx21_usbh_xcvr otg_xcvr; /* tranceiver mode otg (as host) port */
+	u16 	enable_host1:1,
+		enable_host2:1,
+		enable_otg_host:1, /* enable "OTG" port (as host) */
+		host1_xcverless:1, /* traceiverless host1 port */
+		host1_txenoe:1, /* output enable host1 transmit enable */
+		otg_ext_xcvr:1, /* external tranceiver for OTG port */
+		unused:10;
+};
+
+#endif /* __ASM_ARCH_MX21_USBH */

arch/avr32/mach-at32ap/at32ap700x.c

···
 					  ARRAY_SIZE(usba0_resource)))
 		goto out_free_pdev;
 
-	if (data)
+	if (data) {
 		usba_data.pdata.vbus_pin = data->vbus_pin;
-	else
+		usba_data.pdata.vbus_pin_inverted = data->vbus_pin_inverted;
+	} else {
 		usba_data.pdata.vbus_pin = -EINVAL;
+		usba_data.pdata.vbus_pin_inverted = -EINVAL;
+	}
 
 	data = &usba_data.pdata;
 	data->num_ep = ARRAY_SIZE(at32_usba_ep);

drivers/char/tty_buffer.c

···
 EXPORT_SYMBOL_GPL(tty_buffer_request_room);
 
 /**
- *	tty_insert_flip_string	-	Add characters to the tty buffer
+ *	tty_insert_flip_string_fixed_flag - Add characters to the tty buffer
  *	@tty: tty structure
  *	@chars: characters
+ *	@flag: flag value for each character
  *	@size: size
  *
  *	Queue a series of bytes to the tty buffering. All the characters
···
  *	Locking: Called functions may take tty->buf.lock
  */
 
-int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars,
-				size_t size)
+int tty_insert_flip_string_fixed_flag(struct tty_struct *tty,
+		const unsigned char *chars, char flag, size_t size)
 {
 	int copied = 0;
 	do {
···
 		if (unlikely(space == 0))
 			break;
 		memcpy(tb->char_buf_ptr + tb->used, chars, space);
-		memset(tb->flag_buf_ptr + tb->used, TTY_NORMAL, space);
+		memset(tb->flag_buf_ptr + tb->used, flag, space);
 		tb->used += space;
 		copied += space;
 		chars += space;
···
 	} while (unlikely(size > copied));
 	return copied;
 }
-EXPORT_SYMBOL(tty_insert_flip_string);
+EXPORT_SYMBOL(tty_insert_flip_string_fixed_flag);
 
 /**
  *	tty_insert_flip_string_flags	-	Add characters to the tty buffer

drivers/hid/usbhid/hiddev.c

···
 static int hiddev_open(struct inode *inode, struct file *file)
 {
 	struct hiddev_list *list;
-	int res;
+	int res, i;
 
-	int i = iminor(inode) - HIDDEV_MINOR_BASE;
+	lock_kernel();
+	i = iminor(inode) - HIDDEV_MINOR_BASE;
 
 	if (i >= HIDDEV_MINORS || i < 0 || !hiddev_table[i])
 		return -ENODEV;
···
 			usbhid_open(hid);
 		}
 
+	unlock_kernel();
 	return 0;
 bail:
 	file->private_data = NULL;
 	kfree(list);
+	unlock_kernel();
 	return res;
 }
 

drivers/media/video/dabusb.c

···
 {
 	int devnum = iminor(inode);
 	pdabusb_t s;
+	int r;
 
 	if (devnum < DABUSB_MINOR || devnum >= (DABUSB_MINOR + NRDABUSB))
 		return -EIO;
 
+	lock_kernel();
 	s = &dabusb[devnum - DABUSB_MINOR];
 
 	dbg("dabusb_open");
···
 		msleep_interruptible(500);
 
 		if (signal_pending (current)) {
+			unlock_kernel();
 			return -EAGAIN;
 		}
 		mutex_lock(&s->mutex);
···
 	if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) {
 		mutex_unlock(&s->mutex);
 		dev_err(&s->usbdev->dev, "set_interface failed\n");
+		unlock_kernel();
 		return -EINVAL;
 	}
 	s->opened = 1;
···
 	file->f_pos = 0;
 	file->private_data = s;
 
-	return nonseekable_open(inode, file);
+	r = nonseekable_open(inode, file);
+	unlock_kernel();
+	return r;
 }
 
 static int dabusb_release (struct inode *inode, struct file *file)

drivers/staging/usbip/vhci_sysfs.c

···
 	case USB_SPEED_LOW:
 	case USB_SPEED_FULL:
 	case USB_SPEED_HIGH:
-	case USB_SPEED_VARIABLE:
+	case USB_SPEED_WIRELESS:
 		break;
 	default:
 		usbip_uerr("speed %d\n", speed);

drivers/usb/Kconfig

···
 	default y if USB_ARCH_HAS_EHCI
 	default y if PCMCIA && !M32R			# sl811_cs
 	default y if ARM				# SL-811
+	default y if BLACKFIN				# SL-811
 	default y if SUPERH				# r8a66597-hcd
 	default PCI
 
···
 	default y if ARCH_PNX4008 && I2C
 	default y if MFD_TC6393XB
 	default y if ARCH_W90X900
+	default y if ARCH_DAVINCI_DA8XX
 	# PPC:
 	default y if STB03xxx
 	default y if PPC_MPC52xx

drivers/usb/Makefile

···
 obj-$(CONFIG_USB_R8A66597_HCD)	+= host/
 obj-$(CONFIG_USB_HWA_HCD)	+= host/
 obj-$(CONFIG_USB_ISP1760_HCD)	+= host/
+obj-$(CONFIG_USB_IMX21_HCD)	+= host/
 
 obj-$(CONFIG_USB_C67X00_HCD)	+= c67x00/
 

drivers/usb/atm/cxacru.c

···
  *  Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
  *  Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
  *  Copyright (C) 2007 Simon Arlott
+ *  Copyright (C) 2009 Simon Arlott
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License as published by the Free
···
 #include "usbatm.h"
 
 #define DRIVER_AUTHOR	"Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
-#define DRIVER_VERSION	"0.3"
+#define DRIVER_VERSION	"0.4"
 #define DRIVER_DESC	"Conexant AccessRunner ADSL USB modem driver"
 
 static const char cxacru_driver_name[] = "cxacru";
···
 #define CXACRU_EP_DATA		0x02	/* Bulk in/out */
 
 #define CMD_PACKET_SIZE		64	/* Should be maxpacket(ep)? */
+#define CMD_MAX_CONFIG		((CMD_PACKET_SIZE / 4 - 1) / 2)
 
 /* Addresses */
 #define PLLFCLK_ADDR	0x00350068
···
 	CM_REQUEST_CARD_GET_MAC_ADDRESS,
 	CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
 	CM_REQUEST_MAX,
+};
+
+/* commands for interaction with the flash memory
+ *
+ * read:  response is the contents of the first 60 bytes of flash memory
+ * write: request contains the 60 bytes of data to write to flash memory
+ *        response is the contents of the first 60 bytes of flash memory
+ *
+ * layout: PP PP VV VV  MM MM MM MM  MM MM ?? ??  SS SS SS SS  SS SS SS SS
+ *         SS SS SS SS  SS SS SS SS  00 00 00 00  00 00 00 00  00 00 00 00
+ *         00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00
+ *
+ *   P: le16  USB Product ID
+ *   V: le16  USB Vendor ID
+ *   M: be48  MAC Address
+ *   S: le16  ASCII Serial Number
+ */
+enum cxacru_cm_flash {
+	CM_FLASH_READ = 0xa1,
+	CM_FLASH_WRITE = 0xa2
 };
 
 /* reply codes to the commands above */
···
 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
 	cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
 
+#define CXACRU_SET_INIT(_name) \
+static DEVICE_ATTR(_name, S_IWUSR, \
+	NULL, cxacru_sysfs_store_##_name)
+
 #define CXACRU_ATTR_INIT(_value, _type, _name) \
 static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
 	struct device_attribute *attr, char *buf) \
 { \
-	struct usb_interface *intf = to_usb_interface(dev); \
-	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf); \
-	struct cxacru_data *instance = usbatm_instance->driver_data; \
+	struct cxacru_data *instance = to_usbatm_driver_data(\
+		to_usb_interface(dev)); \
+\
+	if (instance == NULL) \
+		return -ENODEV; \
+\
 	return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
 } \
 CXACRU__ATTR_INIT(_name)
 
 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
 #define CXACRU_CMD_CREATE(_name)          CXACRU_DEVICE_CREATE_FILE(_name)
+#define CXACRU_SET_CREATE(_name)          CXACRU_DEVICE_CREATE_FILE(_name)
 #define CXACRU__ATTR_CREATE(_name)        CXACRU_DEVICE_CREATE_FILE(_name)
 
 #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
 #define CXACRU_CMD_REMOVE(_name)          CXACRU_DEVICE_REMOVE_FILE(_name)
+#define CXACRU_SET_REMOVE(_name)          CXACRU_DEVICE_REMOVE_FILE(_name)
 #define CXACRU__ATTR_REMOVE(_name)        CXACRU_DEVICE_REMOVE_FILE(_name)
 
 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
···
 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
 {
 	static char *str[] = {
-			NULL,
+			"",
 			"ANSI T1.413",
 			"ITU-T G.992.1 (G.DMT)",
 			"ITU-T G.992.2 (G.LITE)"
 	};
-	if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
+	if (unlikely(value >= ARRAY_SIZE(str)))
 		return snprintf(buf, PAGE_SIZE, "%u\n", value);
 	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
 }
···
 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
-	struct atm_dev *atm_dev = usbatm_instance->atm_dev;
+	struct cxacru_data *instance = to_usbatm_driver_data(
+			to_usb_interface(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%pM\n", atm_dev->esi);
+	if (instance == NULL || instance->usbatm->atm_dev == NULL)
+		return -ENODEV;
+
+	return snprintf(buf, PAGE_SIZE, "%pM\n",
+		instance->usbatm->atm_dev->esi);
 }
 
 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
-	struct cxacru_data *instance = usbatm_instance->driver_data;
-	u32 value = instance->card_info[CXINF_LINE_STARTABLE];
-
 	static char *str[] = { "running", "stopped" };
+	struct cxacru_data *instance = to_usbatm_driver_data(
+			to_usb_interface(dev));
+	u32 value;
+
+	if (instance == NULL)
+		return -ENODEV;
+
+	value = instance->card_info[CXINF_LINE_STARTABLE];
 	if (unlikely(value >= ARRAY_SIZE(str)))
 		return snprintf(buf, PAGE_SIZE, "%u\n", value);
 	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
···
 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t count)
 {
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
-	struct cxacru_data *instance = usbatm_instance->driver_data;
+	struct cxacru_data *instance = to_usbatm_driver_data(
+			to_usb_interface(dev));
 	int ret;
 	int poll = -1;
 	char str_cmd[8];
···
 		return -EINVAL;
 	ret = 0;
 
+	if (instance == NULL)
+		return -ENODEV;
+
 	if (mutex_lock_interruptible(&instance->adsl_state_serialize))
 		return -ERESTARTSYS;
 
 	if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
 		ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
 		if (ret < 0) {
-			atm_err(usbatm_instance, "change adsl state:"
+			atm_err(instance->usbatm, "change adsl state:"
 				" CHIP_ADSL_LINE_STOP returned %d\n", ret);
 
 			ret = -EIO;
···
 	if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
 		ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
 		if (ret < 0) {
-			atm_err(usbatm_instance, "change adsl state:"
+			atm_err(instance->usbatm, "change adsl state:"
 				" CHIP_ADSL_LINE_START returned %d\n", ret);
 
 			ret = -EIO;
···
 	return ret;
 }
 
+/* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */
+
+static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct cxacru_data *instance = to_usbatm_driver_data(
+			to_usb_interface(dev));
+	int len = strlen(buf);
+	int ret, pos, num;
+	__le32 data[CMD_PACKET_SIZE / 4];
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EACCES;
+
+	if (instance == NULL)
+		return -ENODEV;
+
+	pos = 0;
+	num = 0;
+	while (pos < len) {
+		int tmp;
+		u32 index;
+		u32 value;
+
+		ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp);
+		if (ret < 2)
+			return -EINVAL;
+		if (index < 0 || index > 0x7f)
+			return -EINVAL;
+		pos += tmp;
+
+		/* skip trailing newline */
+		if (buf[pos] == '\n' && pos == len-1)
+			pos++;
+
+		data[num * 2 + 1] = cpu_to_le32(index);
+		data[num * 2 + 2] = cpu_to_le32(value);
+		num++;
+
+		/* send config values when data buffer is full
+		 * or no more data
+		 */
+		if (pos >= len || num >= CMD_MAX_CONFIG) {
+			char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */
+
+			data[0] = cpu_to_le32(num);
+			ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
+				(u8 *) data, 4 + num * 8, NULL, 0);
+			if (ret < 0) {
+				atm_err(instance->usbatm,
+					"set card data returned %d\n", ret);
+				return -EIO;
+			}
+
+			for (tmp = 0; tmp < num; tmp++)
+				snprintf(log + tmp*12, 13, " %02x=%08x",
+					le32_to_cpu(data[tmp * 2 + 1]),
+					le32_to_cpu(data[tmp * 2 + 2]));
+			atm_info(instance->usbatm, "config%s\n", log);
+			num = 0;
+		}
+	}
+
+	return len;
+}
+
 /*
  * All device attributes are included in CXACRU_ALL_FILES
  * so that the same list can be used multiple times:
···
 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND,              u32,  adsl_headend); \
 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT,  u32,  adsl_headend_environment); \
 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION,        u32,  adsl_controller_version); \
-CXACRU_CMD_##_action(                                        adsl_state);
+CXACRU_CMD_##_action(                                        adsl_state); \
+CXACRU_SET_##_action(                                        adsl_config);
 
 CXACRU_ALL_FILES(INIT);
 
···
 	len = ret / 4;
 	for (offb = 0; offb < len; ) {
 		int l = le32_to_cpu(buf[offb++]);
-		if (l > stride || l > (len - offb) / 2) {
+		if (l < 0 || l > stride || l > (len - offb) / 2) {
 			if (printk_ratelimit())
 				usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
 					cm, l);
···
 {
 	struct cxacru_data *instance = usbatm_instance->driver_data;
 	struct usb_interface *intf = usbatm_instance->usb_intf;
-	/*
-	struct atm_dev *atm_dev = usbatm_instance->atm_dev;
-	*/
 	int ret;
 	int start_polling = 1;
 
···
 	}
 	mutex_unlock(&instance->poll_state_serialize);
 	mutex_unlock(&instance->adsl_state_serialize);
+
+	printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number,
+			usbatm_instance->description, atm_dev->esi);
 
 	if (start_polling)
 		cxacru_poll_status(&instance->poll_work.work);
···
 
 static void cxacru_upload_firmware(struct cxacru_data *instance,
 				   const struct firmware *fw,
-				   const struct firmware *bp,
-				   const struct firmware *cf)
+				   const struct firmware *bp)
 {
 	int ret;
-	int off;
 	struct usbatm_data *usbatm = instance->usbatm;
 	struct usb_device *usb_dev = usbatm->usb_dev;
 	__le16 signature[] = { usb_dev->descriptor.idVendor,
···
 	}
 
 	/* Firmware */
+	usb_info(usbatm, "loading firmware\n");
 	ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
 	if (ret) {
 		usb_err(usbatm, "Firmware upload failed: %d\n", ret);
···
 
 	/* Boot ROM patch */
 	if (instance->modem_type->boot_rom_patch) {
+		usb_info(usbatm, "loading boot ROM patch\n");
 		ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
 		if (ret) {
 			usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
···
 		return;
 	}
 
+	usb_info(usbatm, "starting device\n");
 	if (instance->modem_type->boot_rom_patch) {
 		val = cpu_to_le32(BR_ADDR);
 		ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
···
 		usb_err(usbatm, "modem failed to initialize: %d\n", ret);
 		return;
 	}
-
-	/* Load config data (le32), doing one packet at a time */
-	if (cf)
-		for (off = 0; off < cf->size / 4; ) {
-			__le32 buf[CMD_PACKET_SIZE / 4 - 1];
-			int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
-			buf[0] = cpu_to_le32(len);
-			for (i = 0; i < len; i++, off++) {
-				buf[i * 2 + 1] = cpu_to_le32(off);
-				memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
-			}
-			ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
-					(u8 *) buf, len, NULL, 0);
-			if (ret < 0) {
-				usb_err(usbatm, "load config data failed: %d\n", ret);
-				return;
-			}
-		}
-
-	msleep_interruptible(4000);
 }
 
 static int cxacru_find_firmware(struct cxacru_data *instance,
···
 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
 			     struct usb_interface *usb_intf)
 {
-	const struct firmware *fw, *bp, *cf;
+	const struct firmware *fw, *bp;
 	struct cxacru_data *instance = usbatm_instance->driver_data;
 
 	int ret = cxacru_find_firmware(instance, "fw", &fw);
···
 		}
 	}
 
-	if (cxacru_find_firmware(instance, "cf", &cf))		/* optional */
-		cf = NULL;
+	cxacru_upload_firmware(instance, fw, bp);
 
-	cxacru_upload_firmware(instance, fw, bp, cf);
-
-	if (cf)
-		release_firmware(cf);
 	if (instance->modem_type->boot_rom_patch)
 		release_firmware(bp);
 	release_firmware(fw);

drivers/usb/atm/usbatm.c

···
 	if (instance->atm_dev) {
 		sysfs_remove_link(&instance->atm_dev->class_dev.kobj, "device");
 		atm_dev_deregister(instance->atm_dev);
+		instance->atm_dev = NULL;
 	}
 
 	usbatm_put_instance(instance);	/* taken in usbatm_usb_probe */
···
 {
 	dbg("%s: driver version %s", __func__, DRIVER_VERSION);
 
-	if (sizeof(struct usbatm_control) > sizeof(((struct sk_buff *) 0)->cb)) {
+	if (sizeof(struct usbatm_control) > FIELD_SIZEOF(struct sk_buff, cb)) {
 		printk(KERN_ERR "%s unusable with this kernel!\n", usbatm_driver_name);
 		return -EIO;
 	}

drivers/usb/atm/usbatm.h

···
 	struct urb *urbs[0];
 };
 
+static inline void *to_usbatm_driver_data(struct usb_interface *intf)
+{
+	struct usbatm_data *usbatm_instance;
+
+	if (intf == NULL)
+		return NULL;
+
+	usbatm_instance = usb_get_intfdata(intf);
+
+	if (usbatm_instance == NULL) /* set NULL before unbind() */
+		return NULL;
+
+	return usbatm_instance->driver_data; /* set NULL after unbind() */
+}
+
 #endif	/* _USBATM_H_ */

drivers/usb/c67x00/c67x00-drv.c

···
 	if (!c67x00)
 		return -ENOMEM;
 
-	if (!request_mem_region(res->start, res->end - res->start + 1,
+	if (!request_mem_region(res->start, resource_size(res),
 				pdev->name)) {
 		dev_err(&pdev->dev, "Memory region busy\n");
 		ret = -EBUSY;
 		goto request_mem_failed;
 	}
-	c67x00->hpi.base = ioremap(res->start, res->end - res->start + 1);
+	c67x00->hpi.base = ioremap(res->start, resource_size(res));
 	if (!c67x00->hpi.base) {
 		dev_err(&pdev->dev, "Unable to map HPI registers\n");
 		ret = -EIO;
···
  request_irq_failed:
 	iounmap(c67x00->hpi.base);
  map_failed:
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
  request_mem_failed:
 	kfree(c67x00);
 
···
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res)
-		release_mem_region(res->start, res->end - res->start + 1);
+		release_mem_region(res->start, resource_size(res));
 
 	kfree(c67x00);
 

drivers/usb/class/cdc-acm.c

···
 {
 	wb->use = 0;
 	acm->transmitting--;
+	usb_autopm_put_interface_async(acm->control);
 }
 
 /*
···
 	}
 
 	dbg("%s susp_count: %d", __func__, acm->susp_count);
+	usb_autopm_get_interface_async(acm->control);
 	if (acm->susp_count) {
-		acm->delayed_wb = wb;
-		schedule_work(&acm->waker);
+		if (!acm->delayed_wb)
+			acm->delayed_wb = wb;
+		else
+			usb_autopm_put_interface_async(acm->control);
 		spin_unlock_irqrestore(&acm->write_lock, flags);
 		return 0;	/* A white lie */
 	}
···
 		throttled = acm->throttle;
 		spin_unlock_irqrestore(&acm->throttle_lock, flags);
 		if (!throttled) {
-			tty_buffer_request_room(tty, buf->size);
 			tty_insert_flip_string(tty, buf->base, buf->size);
 			tty_flip_buffer_push(tty);
 		} else {
···
 	tty_kref_put(tty);
 }
 
-static void acm_waker(struct work_struct *waker)
-{
-	struct acm *acm = container_of(waker, struct acm, waker);
-	int rv;
-
-	rv = usb_autopm_get_interface(acm->control);
-	if (rv < 0) {
-		dev_err(&acm->dev->dev, "Autopm failure in %s\n", __func__);
-		return;
-	}
-	if (acm->delayed_wb) {
-		acm_start_wb(acm, acm->delayed_wb);
-		acm->delayed_wb = NULL;
-	}
-	usb_autopm_put_interface(acm->control);
-}
-
 /*
  * TTY handlers
  */
···
 
 	acm = acm_table[tty->index];
 	if (!acm || !acm->dev)
-		goto err_out;
+		goto out;
 	else
 		rv = 0;
 
···
 
 	mutex_lock(&acm->mutex);
 	if (acm->port.count++) {
+		mutex_unlock(&acm->mutex);
 		usb_autopm_put_interface(acm->control);
-		goto done;
+		goto out;
 	}
 
 	acm->ctrlurb->dev = acm->dev;
···
 	set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
 	rv = tty_port_block_til_ready(&acm->port, tty, filp);
 	tasklet_schedule(&acm->urb_task);
-done:
+
 	mutex_unlock(&acm->mutex);
-err_out:
+out:
 	mutex_unlock(&open_mutex);
 	return rv;
 
 full_bailout:
 	usb_kill_urb(acm->ctrlurb);
 bail_out:
-	usb_autopm_put_interface(acm->control);
 	acm->port.count--;
 	mutex_unlock(&acm->mutex);
+	usb_autopm_put_interface(acm->control);
 early_bail:
 	mutex_unlock(&open_mutex);
 	tty_port_tty_set(&acm->port, NULL);
···
 		case USB_CDC_CALL_MANAGEMENT_TYPE:
 			call_management_function = buffer[3];
 			call_interface_num = buffer[4];
-			if ((call_management_function & 3) != 3)
+			if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
 				dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
 			break;
 		default:
···
 	acm->urb_task.func = acm_rx_tasklet;
 	acm->urb_task.data = (unsigned long) acm;
 	INIT_WORK(&acm->work, acm_softint);
-	INIT_WORK(&acm->waker, acm_waker);
 	init_waitqueue_head(&acm->drain_wait);
 	spin_lock_init(&acm->throttle_lock);
 	spin_lock_init(&acm->write_lock);
···
 	tasklet_enable(&acm->urb_task);
 
 	cancel_work_sync(&acm->work);
-	cancel_work_sync(&acm->waker);
 }
 
 static void acm_disconnect(struct usb_interface *intf)
···
 static int acm_resume(struct usb_interface *intf)
 {
 	struct acm *acm = usb_get_intfdata(intf);
+	struct acm_wb *wb;
 	int rv = 0;
 	int cnt;
 
···
 	mutex_lock(&acm->mutex);
 	if (acm->port.count) {
 		rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
+
+		spin_lock_irq(&acm->write_lock);
+		if (acm->delayed_wb) {
+			wb = acm->delayed_wb;
+			acm->delayed_wb = NULL;
+			spin_unlock_irq(&acm->write_lock);
+			acm_start_wb(acm, acm->delayed_wb);
+		} else {
+			spin_unlock_irq(&acm->write_lock);
+		}
+
+		/*
+		 * delayed error checking because we must
+		 * do the write path at all cost
+		 */
 		if (rv < 0)
 			goto err_out;
 
···
 err_out:
 	mutex_unlock(&acm->mutex);
 	return rv;
+}
+
+static int acm_reset_resume(struct usb_interface *intf)
+{
+	struct acm *acm = usb_get_intfdata(intf);
+	struct tty_struct *tty;
+
+	mutex_lock(&acm->mutex);
+	if (acm->port.count) {
+		tty = tty_port_tty_get(&acm->port);
+		if (tty) {
+			tty_hangup(tty);
+			tty_kref_put(tty);
+		}
+	}
+	mutex_unlock(&acm->mutex);
+	return acm_resume(intf);
 }
 
 #endif /* CONFIG_PM */
···
  * USB driver structure.
  */
 
-static struct usb_device_id acm_ids[] = {
+static const struct usb_device_id acm_ids[] = {
 	/* quirky and broken devices */
 	{ USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
 	.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
···
 
 	/* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
 
+	/* Support Lego NXT using pbLua firmware */
+	{ USB_DEVICE(0x0694, 0xff00),
+	.driver_info = NOT_A_MODEM,
+       	},
+
 	/* control interfaces with various AT-command sets */
 	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
 		USB_CDC_ACM_PROTO_AT_V25TER) },
···
 #ifdef CONFIG_PM
 	.suspend =	acm_suspend,
 	.resume =	acm_resume,
+	.reset_resume =	acm_reset_resume,
 #endif
 	.id_table =	acm_ids,
 #ifdef CONFIG_PM

drivers/usb/class/cdc-acm.h

···
 	struct mutex mutex;
 	struct usb_cdc_line_coding line;		/* bits, stop, parity */
 	struct work_struct work;			/* work queue entry for line discipline waking up */
-	struct work_struct waker;
 	wait_queue_head_t drain_wait;			/* close processing */
 	struct tasklet_struct urb_task;                 /* rx processing */
 	spinlock_t throttle_lock;			/* synchronize throtteling and read callback */
···
 #define NO_UNION_NORMAL			1
 #define SINGLE_RX_URB			2
 #define NO_CAP_LINE			4
+#define NOT_A_MODEM			8

drivers/usb/class/cdc-wdm.c

···
 #define DRIVER_AUTHOR "Oliver Neukum"
 #define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"
 
-static struct usb_device_id wdm_ids[] = {
+static const struct usb_device_id wdm_ids[] = {
 	{
 		.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
 				 USB_DEVICE_ID_MATCH_INT_SUBCLASS,

drivers/usb/class/usblp.c

···
 	unsigned char		used;			/* True if open */
 	unsigned char		present;		/* True if not disconnected */
 	unsigned char		bidir;			/* interface is bidirectional */
-	unsigned char		sleeping;		/* interface is suspended */
 	unsigned char		no_paper;		/* Paper Out happened */
 	unsigned char		*device_id_string;	/* IEEE 1284 DEVICE ID string (ptr) */
 							/* first 2 bytes are (big-endian) length */
···
 	dbg("quirks=%d", usblp->quirks);
 	dbg("used=%d", usblp->used);
 	dbg("bidir=%d", usblp->bidir);
-	dbg("sleeping=%d", usblp->sleeping);
 	dbg("device_id_string=\"%s\"",
 		usblp->device_id_string ?
 			usblp->device_id_string + 2 :
···
 
 static int handle_bidir (struct usblp *usblp)
 {
-	if (usblp->bidir && usblp->used && !usblp->sleeping) {
+	if (usblp->bidir && usblp->used) {
 		if (usblp_submit_read(usblp) < 0)
 			return -EIO;
 	}
···
 
 	mutex_lock (&usblp->mut);
 	if (!usblp->present) {
-		retval = -ENODEV;
-		goto done;
-	}
-
-	if (usblp->sleeping) {
 		retval = -ENODEV;
 		goto done;
 	}
···
 		return 0;
 	}
 	spin_unlock_irqrestore(&usblp->lock, flags);
-	if (usblp->sleeping)
-		return -ENODEV;
 	if (nonblock)
 		return -EAGAIN;
 	return 1;
···
 		return 0;
 	}
 	spin_unlock_irqrestore(&usblp->lock, flags);
-	if (usblp->sleeping)
-		return -ENODEV;
 	if (nonblock)
 		return -EAGAIN;
 	return 1;
···
 	mutex_unlock (&usblp_mutex);
 }
 
-static int usblp_suspend (struct usb_interface *intf, pm_message_t message)
+static int usblp_suspend(struct usb_interface *intf, pm_message_t message)
 {
 	struct usblp *usblp = usb_get_intfdata (intf);
 
-	/* we take no more IO */
-	usblp->sleeping = 1;
 	usblp_unlink_urbs(usblp);
 #if 0 /* XXX Do we want this? What if someone is reading, should we fail? */
 	/* not strictly necessary, but just in case */
···
 	return 0;
 }
 
-static int usblp_resume (struct usb_interface *intf)
+static int usblp_resume(struct usb_interface *intf)
 {
 	struct usblp *usblp = usb_get_intfdata (intf);
 	int r;
 
-	usblp->sleeping = 0;
 	r = handle_bidir (usblp);
 
 	return r;
 }
 
-static struct usb_device_id usblp_ids [] = {
+static const struct usb_device_id usblp_ids[] = {
 	{ USB_DEVICE_INFO(7, 1, 1) },
 	{ USB_DEVICE_INFO(7, 1, 2) },
 	{ USB_DEVICE_INFO(7, 1, 3) },

drivers/usb/class/usbtmc.c

···
  */
 #define USBTMC_MAX_READS_TO_CLEAR_BULK_IN	100
 
-static struct usb_device_id usbtmc_devices[] = {
+static const struct usb_device_id usbtmc_devices[] = {
 	{ USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 0), },
 	{ USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 1), },
 	{ 0, } /* terminating entry */

drivers/usb/core/Kconfig

···
 	  If you are unsure about this, say N here.
 
 config USB_SUSPEND
-	bool "USB selective suspend/resume and wakeup"
-	depends on USB && PM
+	bool "USB runtime power management (suspend/resume and wakeup)"
+	depends on USB && PM_RUNTIME
 	help
 	  If you say Y here, you can use driver calls or the sysfs
 	  "power/level" file to suspend or resume individual USB

drivers/usb/core/devices.c

···
  */
 
 static DECLARE_WAIT_QUEUE_HEAD(deviceconndiscwq);
+/* guarded by usbfs_mutex */
 static unsigned int conndiscevcnt;
 
 /* this struct stores the poll state for <mountpoint>/devices pollers */
···
 
 void usbfs_conn_disc_event(void)
 {
+	mutex_lock(&usbfs_mutex);
 	conndiscevcnt++;
+	mutex_unlock(&usbfs_mutex);
 	wake_up(&deviceconndiscwq);
 }
 
···
 static unsigned int usb_device_poll(struct file *file,
 				    struct poll_table_struct *wait)
 {
-	struct usb_device_status *st = file->private_data;
+	struct usb_device_status *st;
 	unsigned int mask = 0;
 
-	lock_kernel();
+	mutex_lock(&usbfs_mutex);
+	st = file->private_data;
 	if (!st) {
 		st = kmalloc(sizeof(struct usb_device_status), GFP_KERNEL);
-
-		/* we may have dropped BKL -
-		 * need to check for having lost the race */
-		if (file->private_data) {
-			kfree(st);
-			st = file->private_data;
-			goto lost_race;
-		}
-		/* we haven't lost - check for allocation failure now */
 		if (!st) {
-			unlock_kernel();
+			mutex_unlock(&usbfs_mutex);
 			return POLLIN;
 		}
 
-		/*
-		 * need to prevent the module from being unloaded, since
-		 * proc_unregister does not call the release method and
-		 * we would have a memory leak
-		 */
 		st->lastev = conndiscevcnt;
 		file->private_data = st;
 		mask = POLLIN;
 	}
-lost_race:
+
 	if (file->f_mode & FMODE_READ)
 		poll_wait(file, &deviceconndiscwq, wait);
 	if (st->lastev != conndiscevcnt)
 		mask |= POLLIN;
 	st->lastev = conndiscevcnt;
-	unlock_kernel();
+	mutex_unlock(&usbfs_mutex);
 	return mask;
 }
 
···
 {
 	loff_t ret;
 
-	lock_kernel();
+	mutex_lock(&file->f_dentry->d_inode->i_mutex);
 
 	switch (orig) {
 	case 0:
···
 		ret = -EINVAL;
 	}
 
-	unlock_kernel();
+	mutex_unlock(&file->f_dentry->d_inode->i_mutex);
 	return ret;
 }
 

drivers/usb/core/devio.c

···
 {
 	loff_t ret;
 
-	lock_kernel();
+	mutex_lock(&file->f_dentry->d_inode->i_mutex);
 
 	switch (orig) {
 	case 0:
···
 		ret = -EINVAL;
 	}
 
-	unlock_kernel();
+	mutex_unlock(&file->f_dentry->d_inode->i_mutex);
 	return ret;
 }
 
···
 
 static void snoop_urb(struct usb_device *udev,
 		void __user *userurb, int pipe, unsigned length,
-		int timeout_or_status, enum snoop_when when)
+		int timeout_or_status, enum snoop_when when,
+		unsigned char *data, unsigned data_len)
 {
 	static const char *types[] = {"isoc", "int", "ctrl", "bulk"};
 	static const char *dirs[] = {"out", "in"};
···
 			dev_info(&udev->dev, "ep%d %s-%s, actual_length %u, "
 					"status %d\n",
 					ep, t, d, length, timeout_or_status);
+	}
+
+	if (data && data_len > 0) {
+		print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1,
+			data, data_len, 1);
 	}
 }
 
···
 	}
 	snoop(&urb->dev->dev, "urb complete\n");
 	snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
-			as->status, COMPLETE);
+			as->status, COMPLETE,
+			((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_OUT) ?
+				NULL : urb->transfer_buffer, urb->actual_length);
 	if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
 			as->status != -ENOENT)
 		cancel_bulk_urbs(ps, as->bulk_addr);
···
 	const struct cred *cred = current_cred();
 	int ret;
 
-	lock_kernel();
-	/* Protect against simultaneous removal or release */
-	mutex_lock(&usbfs_mutex);
-
 	ret = -ENOMEM;
 	ps = kmalloc(sizeof(struct dev_state), GFP_KERNEL);
 	if (!ps)
-		goto out;
+		goto out_free_ps;
 
 	ret = -ENODEV;
+
+	/* Protect against simultaneous removal or release */
+	mutex_lock(&usbfs_mutex);
 
 	/* usbdev device-node */
 	if (imajor(inode) == USB_DEVICE_MAJOR)
 		dev = usbdev_lookup_by_devt(inode->i_rdev);
+
 #ifdef CONFIG_USB_DEVICEFS
 	/* procfs file */
 	if (!dev) {
···
 			dev = NULL;
 	}
 #endif
-	if (!dev || dev->state == USB_STATE_NOTATTACHED)
-		goto out;
+	mutex_unlock(&usbfs_mutex);
+
+	if (!dev)
+		goto out_free_ps;
+
+	usb_lock_device(dev);
+	if (dev->state == USB_STATE_NOTATTACHED)
+		goto out_unlock_device;
+
 	ret = usb_autoresume_device(dev);
 	if (ret)
-		goto out;
+		goto out_unlock_device;
 
-	ret = 0;
 	ps->dev = dev;
 	ps->file = file;
 	spin_lock_init(&ps->lock);
···
 	smp_wmb();
 	list_add_tail(&ps->list, &dev->filelist);
 	file->private_data = ps;
+	usb_unlock_device(dev);
 	snoop(&dev->dev, "opened by process %d: %s\n", task_pid_nr(current),
 			current->comm);
- out:
-	if (ret) {
-		kfree(ps);
-		usb_put_dev(dev);
-	}
-	mutex_unlock(&usbfs_mutex);
-	unlock_kernel();
+	return ret;
+
+ out_unlock_device:
+	usb_unlock_device(dev);
+	usb_put_dev(dev);
+ out_free_ps:
+	kfree(ps);
 	return ret;
 }
 
···
 	usb_lock_device(dev);
 	usb_hub_release_all_ports(dev, ps);
 
-	/* Protect against simultaneous open */
-	mutex_lock(&usbfs_mutex);
 	list_del_init(&ps->list);
-	mutex_unlock(&usbfs_mutex);
 
 	for (ifnum = 0; ps->ifclaimed && ifnum < 8*sizeof(ps->ifclaimed);
 			ifnum++) {
···
 	if (!tbuf)
 		return -ENOMEM;
 	tmo = ctrl.timeout;
+	snoop(&dev->dev, "control urb: bRequestType=%02x "
+		"bRequest=%02x wValue=%04x "
+		"wIndex=%04x wLength=%04x\n",
+		ctrl.bRequestType, ctrl.bRequest,
+		__le16_to_cpup(&ctrl.wValue),
+		__le16_to_cpup(&ctrl.wIndex),
+		__le16_to_cpup(&ctrl.wLength));
 	if (ctrl.bRequestType & 0x80) {
 		if (ctrl.wLength && !access_ok(VERIFY_WRITE, ctrl.data,
 					       ctrl.wLength)) {
···
 			return -EINVAL;
 		}
 		pipe = usb_rcvctrlpipe(dev, 0);
-		snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT);
+		snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT, NULL, 0);
 
 		usb_unlock_device(dev);
 		i = usb_control_msg(dev, pipe, ctrl.bRequest,
 				    ctrl.bRequestType, ctrl.wValue, ctrl.wIndex,
 				    tbuf, ctrl.wLength, tmo);
 		usb_lock_device(dev);
-		snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE);
-
+		snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE,
+			tbuf, i);
 		if ((i > 0) && ctrl.wLength) {
 			if (copy_to_user(ctrl.data, tbuf, i)) {
 				free_page((unsigned long)tbuf);
···
 			}
 		}
 		pipe = usb_sndctrlpipe(dev, 0);
-		snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT);
+		snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT,
+			tbuf, ctrl.wLength);
 
 		usb_unlock_device(dev);
 		i = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ctrl.bRequest,
 				    ctrl.bRequestType, ctrl.wValue, ctrl.wIndex,
 				    tbuf, ctrl.wLength, tmo);
 		usb_lock_device(dev);
-		snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE);
+		snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE, NULL, 0);
 	}
 	free_page((unsigned long)tbuf);
 	if (i < 0 && i != -EPIPE) {
···
 			kfree(tbuf);
 			return -EINVAL;
 		}
-		snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT);
+		snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT, NULL, 0);
 
 		usb_unlock_device(dev);
 		i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
 		usb_lock_device(dev);
-		snoop_urb(dev, NULL, pipe, len2, i, COMPLETE);
+		snoop_urb(dev, NULL, pipe, len2, i, COMPLETE, tbuf, len2);
 
 		if (!i && len2) {
 			if (copy_to_user(bulk.data, tbuf, len2)) {
···
 				return -EFAULT;
 			}
 		}
-		snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT);
+		snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT, tbuf, len1);
 
 		usb_unlock_device(dev);
 		i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
 		usb_lock_device(dev);
-		snoop_urb(dev, NULL, pipe, len2, i, COMPLETE);
+		snoop_urb(dev, NULL, pipe, len2, i, COMPLETE, NULL, 0);
 	}
 	kfree(tbuf);
 	if (i < 0)
···
 			is_in = 0;
 			uurb->endpoint &= ~USB_DIR_IN;
 		}
+		snoop(&ps->dev->dev, "control urb: bRequestType=%02x "
+			"bRequest=%02x wValue=%04x "
+			"wIndex=%04x wLength=%04x\n",
+			dr->bRequestType, dr->bRequest,
+			__le16_to_cpup(&dr->wValue),
+			__le16_to_cpup(&dr->wIndex),
+			__le16_to_cpup(&dr->wLength));
 		break;
 
 	case USBDEVFS_URB_TYPE_BULK:
···
 		case USB_ENDPOINT_XFER_CONTROL:
 		case USB_ENDPOINT_XFER_ISOC:
 			return -EINVAL;
-		/* allow single-shot interrupt transfers, at bogus rates */
+		case USB_ENDPOINT_XFER_INT:
+			/* allow single-shot interrupt transfers */
+			uurb->type = USBDEVFS_URB_TYPE_INTERRUPT;
+			goto interrupt_urb;
 		}
+		uurb->number_of_packets = 0;
+		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
+			return -EINVAL;
+		break;
+
+	case USBDEVFS_URB_TYPE_INTERRUPT:
+		if (!usb_endpoint_xfer_int(&ep->desc))
+			return -EINVAL;
+ interrupt_urb:
 		uurb->number_of_packets = 0;
 		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
 			return -EINVAL;
···
 			return -EINVAL;
 		}
 		uurb->buffer_length = totlen;
-		break;
-
-	case USBDEVFS_URB_TYPE_INTERRUPT:
-		uurb->number_of_packets = 0;
-		if (!usb_endpoint_xfer_int(&ep->desc))
-			return -EINVAL;
-		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
-			return -EINVAL;
 		break;
 
 	default:
···
 		}
 	}
 	snoop_urb(ps->dev, as->userurb, as->urb->pipe,
-			as->urb->transfer_buffer_length, 0, SUBMIT);
+			as->urb->transfer_buffer_length, 0, SUBMIT,
+			is_in ? NULL : as->urb->transfer_buffer,
+				uurb->buffer_length);
 	async_newpending(as);
 
 	if (usb_endpoint_xfer_bulk(&ep->desc)) {
···
 		dev_printk(KERN_DEBUG, &ps->dev->dev,
 			   "usbfs: usb_submit_urb returned %d\n", ret);
 		snoop_urb(ps->dev, as->userurb, as->urb->pipe,
-				0, ret, COMPLETE);
+				0, ret, COMPLETE, NULL, 0);
 		async_removepending(as);
 		free_async(as);
 		return ret;
···
 		if (driver == NULL || driver->ioctl == NULL) {
 			retval = -ENOTTY;
 		} else {
+			/* keep API that guarantees BKL */
+			lock_kernel();
 			retval = driver->ioctl(intf, ctl->ioctl_code, buf);
+			unlock_kernel();
 			if (retval == -ENOIOCTLCMD)
 				retval = -ENOTTY;
 		}
···
 
 	if (!(file->f_mode & FMODE_WRITE))
 		return -EPERM;
+
 	usb_lock_device(dev);
 	if (!connected(ps)) {
 		usb_unlock_device(dev);
···
 {
 	int ret;
 
-	lock_kernel();
 	ret = usbdev_do_ioctl(file, cmd, (void __user *)arg);
-	unlock_kernel();
 
 	return ret;
 }
···
 {
 	int ret;
 
-	lock_kernel();
 	ret = usbdev_do_ioctl(file, cmd, compat_ptr(arg));
-	unlock_kernel();
 
 	return ret;
 }

drivers/usb/core/driver.c

···
 #include <linux/device.h>
 #include <linux/usb.h>
 #include <linux/usb/quirks.h>
-#include <linux/workqueue.h>
+#include <linux/pm_runtime.h>
 #include "hcd.h"
 #include "usb.h"
 
···
 {
 	struct usb_device_driver *udriver = to_usb_device_driver(dev->driver);
 	struct usb_device *udev = to_usb_device(dev);
-	int error = -ENODEV;
+	int error = 0;
 
 	dev_dbg(dev, "%s\n", __func__);
 
···
 	/* The device should always appear to be in use
 	 * unless the driver suports autosuspend.
 	 */
-	udev->pm_usage_cnt = !(udriver->supports_autosuspend);
+	if (!udriver->supports_autosuspend)
+		error = usb_autoresume_device(udev);
 
-	error = udriver->probe(udev);
+	if (!error)
+		error = udriver->probe(udev);
 	return error;
 }
 
 /* called from driver core with dev locked */
 static int usb_unbind_device(struct device *dev)
 {
+	struct usb_device *udev = to_usb_device(dev);
 	struct usb_device_driver *udriver = to_usb_device_driver(dev->driver);
 
-	udriver->disconnect(to_usb_device(dev));
+	udriver->disconnect(udev);
+	if (!udriver->supports_autosuspend)
+		usb_autosuspend_device(udev);
 	return 0;
 }
 
···
 	intf->needs_binding = 0;
 
 	if (usb_device_is_owned(udev))
-		return -ENODEV;
+		return error;
 
 	if (udev->authorized == 0) {
 		dev_err(&intf->dev, "Device is not authorized for usage\n");
-		return -ENODEV;
+		return error;
 	}
 
 	id = usb_match_id(intf, driver->id_table);
 	if (!id)
 		id = usb_match_dynamic_id(intf, driver);
-	if (id) {
-		dev_dbg(dev, "%s - got id\n", __func__);
+	if (!id)
+		return error;
 
-		error = usb_autoresume_device(udev);
-		if (error)
-			return error;
+	dev_dbg(dev, "%s - got id\n", __func__);
 
-		/* Interface "power state" doesn't correspond to any hardware
-		 * state whatsoever.  We use it to record when it's bound to
-		 * a driver that may start I/0:  it's not frozen/quiesced.
-		 */
-		mark_active(intf);
-		intf->condition = USB_INTERFACE_BINDING;
+	error = usb_autoresume_device(udev);
+	if (error)
+		return error;
 
-		/* The interface should always appear to be in use
-		 * unless the driver suports autosuspend.
-		 */
-		atomic_set(&intf->pm_usage_cnt, !driver->supports_autosuspend);
+	intf->condition = USB_INTERFACE_BINDING;
 
-		/* Carry out a deferred switch to altsetting 0 */
-		if (intf->needs_altsetting0) {
-			error = usb_set_interface(udev, intf->altsetting[0].
-					desc.bInterfaceNumber, 0);
-			if (error < 0)
-				goto err;
+	/* Bound interfaces are initially active.  They are
+	 * runtime-PM-enabled only if the driver has autosuspend support.
+	 * They are sensitive to their children's power states.
+	 */
+	pm_runtime_set_active(dev);
+	pm_suspend_ignore_children(dev, false);
+	if (driver->supports_autosuspend)
+		pm_runtime_enable(dev);
 
-			intf->needs_altsetting0 = 0;
-		}
-
-		error = driver->probe(intf, id);
-		if (error)
+	/* Carry out a deferred switch to altsetting 0 */
+	if (intf->needs_altsetting0) {
+		error = usb_set_interface(udev, intf->altsetting[0].
+				desc.bInterfaceNumber, 0);
+		if (error < 0)
 			goto err;
-
-		intf->condition = USB_INTERFACE_BOUND;
-		usb_autosuspend_device(udev);
+		intf->needs_altsetting0 = 0;
 	}
 
+	error = driver->probe(intf, id);
+	if (error)
+		goto err;
+
+	intf->condition = USB_INTERFACE_BOUND;
+	usb_autosuspend_device(udev);
 	return error;
 
-err:
-	mark_quiesced(intf);
+ err:
 	intf->needs_remote_wakeup = 0;
 	intf->condition = USB_INTERFACE_UNBOUND;
 	usb_cancel_queued_reset(intf);
+
+	/* Unbound interfaces are always runtime-PM-disabled and -suspended */
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+
 	usb_autosuspend_device(udev);
 	return error;
 }
···
 	usb_set_intfdata(intf, NULL);
 
 	intf->condition = USB_INTERFACE_UNBOUND;
-	mark_quiesced(intf);
 	intf->needs_remote_wakeup = 0;
+
+	/* Unbound interfaces are always runtime-PM-disabled and -suspended */
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+
+	/* Undo any residual pm_autopm_get_interface_* calls */
+	for (r = atomic_read(&intf->pm_usage_cnt); r > 0; --r)
+		usb_autopm_put_interface_no_suspend(intf);
+	atomic_set(&intf->pm_usage_cnt, 0);
 
 	if (!error)
 		usb_autosuspend_device(udev);
···
 				struct usb_interface *iface, void *priv)
 {
 	struct device *dev = &iface->dev;
-	struct usb_device *udev = interface_to_usbdev(iface);
 	int retval = 0;
 
 	if (dev->driver)
···
 	usb_set_intfdata(iface, priv);
 	iface->needs_binding = 0;
 
-	usb_pm_lock(udev);
 	iface->condition = USB_INTERFACE_BOUND;
-	mark_active(iface);
-	atomic_set(&iface->pm_usage_cnt, !driver->supports_autosuspend);
-	usb_pm_unlock(udev);
+
+	/* Bound interfaces are initially active.  They are
+	 * runtime-PM-enabled only if the driver has autosuspend support.
+	 * They are sensitive to their children's power states.
+	 */
+	pm_runtime_set_active(dev);
+	pm_suspend_ignore_children(dev, false);
+	if (driver->supports_autosuspend)
+		pm_runtime_enable(dev);
 
 	/* if interface was already added, bind now; else let
 	 * the future device_add() bind it, bypassing probe()
···
 {
 	struct usb_device *usb_dev;
 
-	/* driver is often null here; dev_dbg() would oops */
-	pr_debug("usb %s: uevent\n", dev_name(dev));
-
 	if (is_usb_device(dev)) {
 		usb_dev = to_usb_device(dev);
 	} else if (is_usb_interface(dev)) {
···
 	}
 
 	if (usb_dev->devnum < 0) {
+		/* driver is often null here; dev_dbg() would oops */
 		pr_debug("usb %s: already deleted?\n", dev_name(dev));
 		return -ENODEV;
 	}
···
 	}
 }
 
-/* Caller has locked udev's pm_mutex */
 static int usb_suspend_device(struct usb_device *udev, pm_message_t msg)
 {
 	struct usb_device_driver	*udriver;
···
 	return status;
 }
 
-/* Caller has locked udev's pm_mutex */
 static int usb_resume_device(struct usb_device *udev, pm_message_t msg)
 {
 	struct usb_device_driver	*udriver;
···
 	return status;
 }
 
-/* Caller has locked intf's usb_device's pm mutex */
 static int usb_suspend_interface(struct usb_device *udev,
 		struct usb_interface *intf, pm_message_t msg)
 {
 	struct usb_driver	*driver;
 	int			status = 0;
 
-	/* with no hardware, USB interfaces only use FREEZE and ON states */
-	if (udev->state == USB_STATE_NOTATTACHED || !is_active(intf))
-		goto done;
-
-	/* This can happen; see usb_driver_release_interface() */
-	if (intf->condition == USB_INTERFACE_UNBOUND)
+	if (udev->state == USB_STATE_NOTATTACHED ||
+			intf->condition == USB_INTERFACE_UNBOUND)
 		goto done;
 	driver = to_usb_driver(intf->dev.driver);
 
 	if (driver->suspend) {
 		status = driver->suspend(intf, msg);
-		if (status == 0)
-			mark_quiesced(intf);
-		else if (!(msg.event & PM_EVENT_AUTO))
+		if (status && !(msg.event & PM_EVENT_AUTO))
 			dev_err(&intf->dev, "%s error %d\n",
 					"suspend", status);
 	} else {
···
 		intf->needs_binding = 1;
 		dev_warn(&intf->dev, "no %s for driver %s?\n",
 				"suspend", driver->name);
-		mark_quiesced(intf);
 	}
 
  done:
···
 	return status;
 }
 
-/* Caller has locked intf's usb_device's pm_mutex */
 static int usb_resume_interface(struct usb_device *udev,
 		struct usb_interface *intf, pm_message_t msg, int reset_resume)
 {
 	struct usb_driver	*driver;
 	int			status = 0;
 
-	if (udev->state == USB_STATE_NOTATTACHED || is_active(intf))
+	if (udev->state == USB_STATE_NOTATTACHED)
 		goto done;
 
 	/* Don't let autoresume interfere with unbinding */
···
 
 done:
 	dev_vdbg(&intf->dev, "%s: status %d\n", __func__, status);
-	if (status == 0 && intf->condition == USB_INTERFACE_BOUND)
-		mark_active(intf);
 
 	/* Later we will unbind the driver and/or reprobe, if necessary */
 	return status;
 }
-
-#ifdef	CONFIG_USB_SUSPEND
-
-/* Internal routine to check whether we may autosuspend a device. */
-static int autosuspend_check(struct usb_device *udev, int reschedule)
-{
-	int			i;
-	struct usb_interface	*intf;
-	unsigned long		suspend_time, j;
-
-	/* For autosuspend, fail fast if anything is in use or autosuspend
-	 * is disabled.  Also fail if any interfaces require remote wakeup
-	 * but it isn't available.
-	 */
-	if (udev->pm_usage_cnt > 0)
-		return -EBUSY;
-	if (udev->autosuspend_delay < 0 || udev->autosuspend_disabled)
-		return -EPERM;
-
-	suspend_time = udev->last_busy + udev->autosuspend_delay;
-	if (udev->actconfig) {
-		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
-			intf = udev->actconfig->interface[i];
-			if (!is_active(intf))
-				continue;
-			if (atomic_read(&intf->pm_usage_cnt) > 0)
-				return -EBUSY;
-			if (intf->needs_remote_wakeup &&
-					!udev->do_remote_wakeup) {
-				dev_dbg(&udev->dev, "remote wakeup needed "
-						"for autosuspend\n");
-				return -EOPNOTSUPP;
-			}
-
-			/* Don't allow autosuspend if the device will need
-			 * a reset-resume and any of its interface drivers
-			 * doesn't include support.
-			 */
-			if (udev->quirks & USB_QUIRK_RESET_RESUME) {
-				struct usb_driver *driver;
-
-				driver = to_usb_driver(intf->dev.driver);
-				if (!driver->reset_resume ||
-				    intf->needs_remote_wakeup)
-					return -EOPNOTSUPP;
-			}
-		}
-	}
-
-	/* If everything is okay but the device hasn't been idle for long
-	 * enough, queue a delayed autosuspend request.  If the device
-	 * _has_ been idle for long enough and the reschedule flag is set,
-	 * likewise queue a delayed (1 second) autosuspend request.
-	 */
-	j = jiffies;
-	if (time_before(j, suspend_time))
-		reschedule = 1;
-	else
-		suspend_time = j + HZ;
-	if (reschedule) {
-		if (!timer_pending(&udev->autosuspend.timer)) {
-			queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
-				round_jiffies_up_relative(suspend_time - j));
-		}
-		return -EAGAIN;
-	}
-	return 0;
-}
-
-#else
-
-static inline int autosuspend_check(struct usb_device *udev, int reschedule)
-{
-	return 0;
-}
-
-#endif	/* CONFIG_USB_SUSPEND */
 
 /**
  * usb_suspend_both - suspend a USB device and its interfaces
···
  * all the interfaces which were suspended are resumed so that they remain
  * in the same state as the device.
  *
- * If an autosuspend is in progress the routine checks first to make sure
- * that neither the device itself or any of its active interfaces is in use
- * (pm_usage_cnt is greater than 0).  If they are, the autosuspend fails.
- *
- * If the suspend succeeds, the routine recursively queues an autosuspend
- * request for @udev's parent device, thereby propagating the change up
- * the device tree.  If all of the parent's children are now suspended,
- * the parent will autosuspend in turn.
- *
- * The suspend method calls are subject to mutual exclusion under control
- * of @udev's pm_mutex.  Many of these calls are also under the protection
- * of @udev's device lock (including all requests originating outside the
- * USB subsystem), but autosuspend requests generated by a child device or
- * interface driver may not be.  Usbcore will insure that the method calls
- * do not arrive during bind, unbind, or reset operations.  However, drivers
- * must be prepared to handle suspend calls arriving at unpredictable times.
- * The only way to block such calls is to do an autoresume (preventing
- * autosuspends) while holding @udev's device lock (preventing outside
- * suspends).
- *
- * The caller must hold @udev->pm_mutex.
+ * Autosuspend requests originating from a child device or an interface
+ * driver may be made without the protection of @udev's device lock, but
+ * all other suspend calls will hold the lock.  Usbcore will insure that
+ * method calls do not arrive during bind, unbind, or reset operations.
+ * However drivers must be prepared to handle suspend calls arriving at
+ * unpredictable times.
  *
  * This routine can run only in process context.
  */
···
 	int			status = 0;
 	int			i = 0;
 	struct usb_interface	*intf;
-	struct usb_device	*parent = udev->parent;
 
 	if (udev->state == USB_STATE_NOTATTACHED ||
 			udev->state == USB_STATE_SUSPENDED)
 		goto done;
-
-	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
-
-	if (msg.event & PM_EVENT_AUTO) {
-		status = autosuspend_check(udev, 0);
-		if (status < 0)
-			goto done;
-	}
 
 	/* Suspend all the interfaces and then udev itself */
 	if (udev->actconfig) {
···
 
 	/* If the suspend failed, resume interfaces that did get suspended */
 	if (status != 0) {
-		pm_message_t msg2;
-
-		msg2.event = msg.event ^ (PM_EVENT_SUSPEND | PM_EVENT_RESUME);
+		msg.event ^= (PM_EVENT_SUSPEND | PM_EVENT_RESUME);
 		while (--i >= 0) {
 			intf = udev->actconfig->interface[i];
-			usb_resume_interface(udev, intf, msg2, 0);
+			usb_resume_interface(udev, intf, msg, 0);
 		}
 
-		/* Try another autosuspend when the interfaces aren't busy */
-		if (msg.event & PM_EVENT_AUTO)
-			autosuspend_check(udev, status == -EBUSY);
-
-	/* If the suspend succeeded then prevent any more URB submissions,
-	 * flush any outstanding URBs, and propagate the suspend up the tree.
+	/* If the suspend succeeded then prevent any more URB submissions
+	 * and flush any outstanding URBs.
 	 */
 	} else {
-		cancel_delayed_work(&udev->autosuspend);
 		udev->can_submit = 0;
 		for (i = 0; i < 16; ++i) {
 			usb_hcd_flush_endpoint(udev, udev->ep_out[i]);
 			usb_hcd_flush_endpoint(udev, udev->ep_in[i]);
 		}
-
-		/* If this is just a FREEZE or a PRETHAW, udev might
-		 * not really be suspended.  Only true suspends get
-		 * propagated up the device tree.
-		 */
-		if (parent && udev->state == USB_STATE_SUSPENDED)
-			usb_autosuspend_device(parent);
 	}
 
  done:
···
  * the resume method for @udev and then calls the resume methods for all
  * the interface drivers in @udev.
  *
- * Before starting the resume, the routine calls itself recursively for
- * the parent device of @udev, thereby propagating the change up the device
- * tree and assuring that @udev will be able to resume.  If the parent is
- * unable to resume successfully, the routine fails.
- *
- * The resume method calls are subject to mutual exclusion under control
- * of @udev's pm_mutex.  Many of these calls are also under the protection
- * of @udev's device lock (including all requests originating outside the
- * USB subsystem), but autoresume requests generated by a child device or
- * interface driver may not be.  Usbcore will insure that the method calls
- * do not arrive during bind, unbind, or reset operations.  However, drivers
- * must be prepared to handle resume calls arriving at unpredictable times.
- * The only way to block such calls is to do an autoresume (preventing
- * other autoresumes) while holding @udev's device lock (preventing outside
- * resumes).
- *
- * The caller must hold @udev->pm_mutex.
+ * Autoresume requests originating from a child device or an interface
+ * driver may be made without the protection of @udev's device lock, but
+ * all other resume calls will hold the lock.  Usbcore will insure that
+ * method calls do not arrive during bind, unbind, or reset operations.
+ * However drivers must be prepared to handle resume calls arriving at
+ * unpredictable times.
  *
  * This routine can run only in process context.
  */
···
 	int			status = 0;
 	int			i;
 	struct usb_interface	*intf;
-	struct usb_device	*parent = udev->parent;
 
-	cancel_delayed_work(&udev->autosuspend);
 	if (udev->state == USB_STATE_NOTATTACHED) {
 		status = -ENODEV;
 		goto done;
 	}
 	udev->can_submit = 1;
 
-	/* Propagate the resume up the tree, if necessary */
-	if (udev->state == USB_STATE_SUSPENDED) {
-		if (parent) {
-			status = usb_autoresume_device(parent);
-			if (status == 0) {
-				status = usb_resume_device(udev, msg);
-				if (status || udev->state ==
-						USB_STATE_NOTATTACHED) {
-					usb_autosuspend_device(parent);
-
-					/* It's possible usb_resume_device()
-					 * failed after the port was
-					 * unsuspended, causing udev to be
-					 * logically disconnected.  We don't
-					 * want usb_disconnect() to autosuspend
-					 * the parent again, so tell it that
-					 * udev disconnected while still
-					 * suspended. */
-					if (udev->state ==
-							USB_STATE_NOTATTACHED)
-						udev->discon_suspended = 1;
-				}
-			}
-		} else {
-
-			/* We can't progagate beyond the USB subsystem,
-			 * so if a root hub's controller is suspended
-			 * then we're stuck. */
-			status = usb_resume_device(udev, msg);
-		}
-	} else if (udev->reset_resume)
+	/* Resume the device */
+	if (udev->state == USB_STATE_SUSPENDED || udev->reset_resume)
 		status = usb_resume_device(udev, msg);
 
+	/* Resume the interfaces */
 	if (status == 0 && udev->actconfig) {
 		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
 			intf = udev->actconfig->interface[i];
···
 	return status;
 }
 
-#ifdef CONFIG_USB_SUSPEND
-
-/* Internal routine to adjust a device's usage counter and change
- * its autosuspend state.
- */
-static int usb_autopm_do_device(struct usb_device *udev, int inc_usage_cnt)
+/* The device lock is held by the PM core */
+int usb_suspend(struct device *dev, pm_message_t msg)
 {
-	int	status = 0;
+	struct usb_device	*udev = to_usb_device(dev);
 
-	usb_pm_lock(udev);
-	udev->pm_usage_cnt += inc_usage_cnt;
-	WARN_ON(udev->pm_usage_cnt < 0);
-	if (inc_usage_cnt)
-		udev->last_busy = jiffies;
-	if (inc_usage_cnt >= 0 && udev->pm_usage_cnt > 0) {
-		if (udev->state == USB_STATE_SUSPENDED)
-			status = usb_resume_both(udev, PMSG_AUTO_RESUME);
-		if (status != 0)
-			udev->pm_usage_cnt -= inc_usage_cnt;
-		else if (inc_usage_cnt)
+	do_unbind_rebind(udev, DO_UNBIND);
+	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
+	return usb_suspend_both(udev, msg);
+}
+
+/* The device lock is held by the PM core */
+int usb_resume(struct device *dev, pm_message_t msg)
+{
+	struct usb_device	*udev = to_usb_device(dev);
+	int			status;
+
+	/* For PM complete calls, all we do is rebind interfaces */
+	if (msg.event == PM_EVENT_ON) {
+		if (udev->state != USB_STATE_NOTATTACHED)
+			do_unbind_rebind(udev, DO_REBIND);
+		status = 0;
+
+	/* For all other calls, take the device back to full power and
+	 * tell the PM core in case it was autosuspended previously.
+	 */
+	} else {
+		status = usb_resume_both(udev, msg);
+		if (status == 0) {
+			pm_runtime_disable(dev);
+			pm_runtime_set_active(dev);
+			pm_runtime_enable(dev);
 			udev->last_busy = jiffies;
-	} else if (inc_usage_cnt <= 0 && udev->pm_usage_cnt <= 0) {
-		status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
+		}
 	}
-	usb_pm_unlock(udev);
+
+	/* Avoid PM error messages for devices disconnected while suspended
+	 * as we'll display regular disconnect messages just a bit later.
+	 */
+	if (status == -ENODEV)
+		status = 0;
 	return status;
 }
 
-/* usb_autosuspend_work - callback routine to autosuspend a USB device */
-void usb_autosuspend_work(struct work_struct *work)
+#endif /* CONFIG_PM */
+
+#ifdef CONFIG_USB_SUSPEND
+
+/**
+ * usb_enable_autosuspend - allow a USB device to be autosuspended
+ * @udev: the USB device which may be autosuspended
+ *
+ * This routine allows @udev to be autosuspended.  An autosuspend won't
+ * take place until the autosuspend_delay has elapsed and all the other
+ * necessary conditions are satisfied.
+ *
+ * The caller must hold @udev's device lock.
+ */
+int usb_enable_autosuspend(struct usb_device *udev)
 {
-	struct usb_device *udev =
-		container_of(work, struct usb_device, autosuspend.work);
-
-	usb_autopm_do_device(udev, 0);
+	if (udev->autosuspend_disabled) {
+		udev->autosuspend_disabled = 0;
+		usb_autosuspend_device(udev);
+	}
+	return 0;
 }
+EXPORT_SYMBOL_GPL(usb_enable_autosuspend);
 
-/* usb_autoresume_work - callback routine to autoresume a USB device */
-void usb_autoresume_work(struct work_struct *work)
+/**
+ * usb_disable_autosuspend - prevent a USB device from being autosuspended
+ * @udev: the USB device which may not be autosuspended
+ *
+ * This routine prevents @udev from being autosuspended and wakes it up
+ * if it is already autosuspended.
+ *
+ * The caller must hold @udev's device lock.
+ */
+int usb_disable_autosuspend(struct usb_device *udev)
 {
-	struct usb_device *udev =
-		container_of(work, struct usb_device, autoresume);
+	int rc = 0;
 
-	/* Wake it up, let the drivers do their thing, and then put it
-	 * back to sleep.
-	 */
-	if (usb_autopm_do_device(udev, 1) == 0)
-		usb_autopm_do_device(udev, -1);
+	if (!udev->autosuspend_disabled) {
+		rc = usb_autoresume_device(udev);
+		if (rc == 0)
+			udev->autosuspend_disabled = 1;
+	}
+	return rc;
 }
+EXPORT_SYMBOL_GPL(usb_disable_autosuspend);
 
 /**
  * usb_autosuspend_device - delayed autosuspend of a USB device and its interfaces
···
  * @udev and wants to allow it to autosuspend.  Examples would be when
  * @udev's device file in usbfs is closed or after a configuration change.
  *
- * @udev's usage counter is decremented.  If it or any of the usage counters
- * for an active interface is greater than 0, no autosuspend request will be
- * queued.  (If an interface driver does not support autosuspend then its
- * usage counter is permanently positive.)  Furthermore, if an interface
- * driver requires remote-wakeup capability during autosuspend but remote
- * wakeup is disabled, the autosuspend will fail.
+ * @udev's usage counter is decremented; if it drops to 0 and all the
+ * interfaces are inactive then a delayed autosuspend will be attempted.
+ * The attempt may fail (see autosuspend_check()).
  *
- * Often the caller will hold @udev's device lock, but this is not
- * necessary.
+ * The caller must hold @udev's device lock.
  *
  * This routine can run only in process context.
  */
···
 {
 	int	status;
 
-	status = usb_autopm_do_device(udev, -1);
-	dev_vdbg(&udev->dev, "%s: cnt %d\n",
-			__func__, udev->pm_usage_cnt);
+	udev->last_busy = jiffies;
+	status = pm_runtime_put_sync(&udev->dev);
+	dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&udev->dev.power.usage_count),
+			status);
 }
 
 /**
···
  * This routine should be called when a core subsystem thinks @udev may
  * be ready to autosuspend.
  *
- * @udev's usage counter left unchanged.  If it or any of the usage counters
- * for an active interface is greater than 0, or autosuspend is not allowed
- * for any other reason, no autosuspend request will be queued.
+ * @udev's usage counter left unchanged.  If it is 0 and all the interfaces
+ * are inactive then an autosuspend will be attempted.  The attempt may
+ * fail or be delayed.
+ *
+ * The caller must hold @udev's device lock.
  *
  * This routine can run only in process context.
  */
 void usb_try_autosuspend_device(struct usb_device *udev)
 {
-	usb_autopm_do_device(udev, 0);
-	dev_vdbg(&udev->dev, "%s: cnt %d\n",
-			__func__, udev->pm_usage_cnt);
+	int	status;
+
+	status = pm_runtime_idle(&udev->dev);
+	dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&udev->dev.power.usage_count),
+			status);
 }
 
 /**
···
  *
  * This routine should be called when a core subsystem wants to use @udev
  * and needs to guarantee that it is not suspended.  No autosuspend will
- * occur until usb_autosuspend_device is called.  (Note that this will not
- * prevent suspend events originating in the PM core.)  Examples would be
- * when @udev's device file in usbfs is opened or when a remote-wakeup
+ * occur until usb_autosuspend_device() is called.  (Note that this will
+ * not prevent suspend events originating in the PM core.)  Examples would
+ * be when @udev's device file in usbfs is opened or when a remote-wakeup
  * request is received.
  *
  * @udev's usage counter is incremented to prevent subsequent autosuspends.
  * However if the autoresume fails then the usage counter is re-decremented.
  *
- * Often the caller will hold @udev's device lock, but this is not
- * necessary (and attempting it might cause deadlock).
+ * The caller must hold @udev's device lock.
  *
  * This routine can run only in process context.
  */
···
 {
 	int	status;
 
-	status = usb_autopm_do_device(udev, 1);
-	dev_vdbg(&udev->dev, "%s: status %d cnt %d\n",
-			__func__, status, udev->pm_usage_cnt);
-	return status;
-}
-
-/* Internal routine to adjust an interface's usage counter and change
- * its device's autosuspend state.
- */
-static int usb_autopm_do_interface(struct usb_interface *intf,
-		int inc_usage_cnt)
-{
-	struct usb_device	*udev = interface_to_usbdev(intf);
-	int			status = 0;
-
-	usb_pm_lock(udev);
-	if (intf->condition == USB_INTERFACE_UNBOUND)
-		status = -ENODEV;
-	else {
-		atomic_add(inc_usage_cnt, &intf->pm_usage_cnt);
-		udev->last_busy = jiffies;
-		if (inc_usage_cnt >= 0 &&
-				atomic_read(&intf->pm_usage_cnt) > 0) {
-			if (udev->state == USB_STATE_SUSPENDED)
-				status = usb_resume_both(udev,
-						PMSG_AUTO_RESUME);
-			if (status != 0)
-				atomic_sub(inc_usage_cnt, &intf->pm_usage_cnt);
-			else
-				udev->last_busy = jiffies;
-		} else if (inc_usage_cnt <= 0 &&
-				atomic_read(&intf->pm_usage_cnt) <= 0) {
-			status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
-		}
-	}
-	usb_pm_unlock(udev);
+	status = pm_runtime_get_sync(&udev->dev);
+	if (status < 0)
+		pm_runtime_put_sync(&udev->dev);
+	dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&udev->dev.power.usage_count),
+			status);
+	if (status > 0)
+		status = 0;
 	return status;
 }
 
···
  * closed.
  *
  * The routine decrements @intf's usage counter.  When the counter reaches
- * 0, a delayed autosuspend request for @intf's device is queued.  When
- * the delay expires, if @intf->pm_usage_cnt is still <= 0 along with all
- * the other usage counters for the sibling interfaces and @intf's
- * usb_device, the device and all its interfaces will be autosuspended.
- *
- * Note that @intf->pm_usage_cnt is owned by the interface driver.  The
- * core will not change its value other than the increment and decrement
- * in usb_autopm_get_interface and usb_autopm_put_interface.  The driver
- * may use this simple counter-oriented discipline or may set the value
- * any way it likes.
+ * 0, a delayed autosuspend request for @intf's device is attempted.  The
+ * attempt may fail (see autosuspend_check()).
  *
  * If the driver has set @intf->needs_remote_wakeup then autosuspend will
  * take place only if the device's remote-wakeup facility is enabled.
- *
- * Suspend method calls queued by this routine can arrive at any time
- * while @intf is resumed and its usage counter is equal to 0.  They are
- * not protected by the usb_device's lock but only by its pm_mutex.
- * Drivers must provide their own synchronization.
  *
  * This routine can run only in process context.
  */
 void usb_autopm_put_interface(struct usb_interface *intf)
 {
-	int	status;
+	struct usb_device	*udev = interface_to_usbdev(intf);
+	int			status;
 
-	status = usb_autopm_do_interface(intf, -1);
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	udev->last_busy = jiffies;
+	atomic_dec(&intf->pm_usage_cnt);
+	status = pm_runtime_put_sync(&intf->dev);
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
 }
 EXPORT_SYMBOL_GPL(usb_autopm_put_interface);
 
···
  * usb_autopm_put_interface_async - decrement a USB interface's PM-usage counter
  * @intf: the usb_interface whose counter should be decremented
  *
- * This routine does essentially the same thing as
- * usb_autopm_put_interface(): it decrements @intf's usage counter and
- * queues a delayed autosuspend request if the counter is <= 0.  The
- * difference is that it does not acquire the device's pm_mutex;
- * callers must handle all synchronization issues themselves.
+ * This routine does much the same thing as usb_autopm_put_interface():
+ * It decrements @intf's usage counter and schedules a delayed
+ * autosuspend request if the counter is <= 0.  The difference is that it
+ * does not perform any synchronization; callers should hold a private
+ * lock and handle all synchronization issues themselves.
  *
  * Typically a driver would call this routine during an URB's completion
  * handler, if no more URBs were pending.
···
 void usb_autopm_put_interface_async(struct usb_interface *intf)
 {
 	struct usb_device	*udev = interface_to_usbdev(intf);
+	unsigned long		last_busy;
 	int			status = 0;
 
-	if (intf->condition == USB_INTERFACE_UNBOUND) {
-		status = -ENODEV;
-	} else {
-		udev->last_busy = jiffies;
-		atomic_dec(&intf->pm_usage_cnt);
-		if (udev->autosuspend_disabled || udev->autosuspend_delay < 0)
-			status = -EPERM;
-		else if (atomic_read(&intf->pm_usage_cnt) <= 0 &&
-				!timer_pending(&udev->autosuspend.timer)) {
-			queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
+	last_busy = udev->last_busy;
+	udev->last_busy = jiffies;
+	atomic_dec(&intf->pm_usage_cnt);
+	pm_runtime_put_noidle(&intf->dev);
+
+	if (!udev->autosuspend_disabled) {
+		/* Optimization: Don't schedule a delayed autosuspend if
+		 * the timer is already running and the expiration time
+		 * wouldn't change.
+		 *
+		 * We have to use the interface's timer.  Attempts to
+		 * schedule a suspend for the device would fail because
+		 * the interface is still active.
+		 */
+		if (intf->dev.power.timer_expires == 0 ||
+				round_jiffies_up(last_busy) !=
+				round_jiffies_up(jiffies)) {
+			status = pm_schedule_suspend(&intf->dev,
+					jiffies_to_msecs(
 					round_jiffies_up_relative(
-						udev->autosuspend_delay));
+						udev->autosuspend_delay)));
 		}
 	}
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
 }
 EXPORT_SYMBOL_GPL(usb_autopm_put_interface_async);
+
+/**
+ * usb_autopm_put_interface_no_suspend - decrement a USB interface's PM-usage counter
+ * @intf: the usb_interface whose counter should be decremented
+ *
+ * This routine decrements @intf's usage counter but does not carry out an
+ * autosuspend.
+ *
+ * This routine can run in atomic context.
+ */
+void usb_autopm_put_interface_no_suspend(struct usb_interface *intf)
+{
+	struct usb_device	*udev = interface_to_usbdev(intf);
+
+	udev->last_busy = jiffies;
+	atomic_dec(&intf->pm_usage_cnt);
+	pm_runtime_put_noidle(&intf->dev);
+}
+EXPORT_SYMBOL_GPL(usb_autopm_put_interface_no_suspend);
 
 /**
  * usb_autopm_get_interface - increment a USB interface's PM-usage counter
···
  * or @intf is unbound.  A typical example would be a character-device
  * driver when its device file is opened.
  *
- *
- * The routine increments @intf's usage counter.  (However if the
- * autoresume fails then the counter is re-decremented.)  So long as the
- * counter is greater than 0, autosuspend will not be allowed for @intf
- * or its usb_device.  When the driver is finished using @intf it should
- * call usb_autopm_put_interface() to decrement the usage counter and
- * queue a delayed autosuspend request (if the counter is <= 0).
- *
- *
- * Note that @intf->pm_usage_cnt is owned by the interface driver.  The
- * core will not change its value other than the increment and decrement
- * in usb_autopm_get_interface and usb_autopm_put_interface.  The driver
- * may use this simple counter-oriented discipline or may set the value
- * any way it likes.
- *
- * Resume method calls generated by this routine can arrive at any time
- * while @intf is suspended.  They are not protected by the usb_device's
- * lock but only by its pm_mutex.  Drivers must provide their own
- * synchronization.
+ * @intf's usage counter is incremented to prevent subsequent autosuspends.
+ * However if the autoresume fails then the counter is re-decremented.
  *
  * This routine can run only in process context.
  */
···
 {
 	int	status;
 
-	status = usb_autopm_do_interface(intf, 1);
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	status = pm_runtime_get_sync(&intf->dev);
+	if (status < 0)
+		pm_runtime_put_sync(&intf->dev);
+	else
+		atomic_inc(&intf->pm_usage_cnt);
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
+	if (status > 0)
+		status = 0;
 	return status;
 }
 EXPORT_SYMBOL_GPL(usb_autopm_get_interface);
···
  * @intf: the usb_interface whose counter should be incremented
  *
  * This routine does much the same thing as
- * usb_autopm_get_interface(): it increments @intf's usage counter and
- * queues an autoresume request if the result is > 0.  The differences
- * are that it does not acquire the device's pm_mutex (callers must
- * handle all synchronization issues themselves), and it does not
- * autoresume the device directly (it only queues a request).  After a
- * successful call, the device will generally not yet be resumed.
+ * usb_autopm_get_interface(): It increments @intf's usage counter and
+ * queues an autoresume request if the device is suspended.  The
+ * differences are that it does not perform any synchronization (callers
+ * should hold a private lock and handle all synchronization issues
+ * themselves), and it does not autoresume the device directly (it only
+ * queues a request).  After a successful call, the device may not yet be
+ * resumed.
  *
  * This routine can run in atomic context.
  */
 int usb_autopm_get_interface_async(struct usb_interface *intf)
 {
-	struct usb_device	*udev = interface_to_usbdev(intf);
-	int			status = 0;
+	int		status = 0;
+	enum rpm_status	s;
 
-	if (intf->condition == USB_INTERFACE_UNBOUND)
-		status = -ENODEV;
-	else {
+	/* Don't request a resume unless the interface is already suspending
+	 * or suspended.  Doing so would force a running suspend timer to be
+	 * cancelled.
+	 */
+	pm_runtime_get_noresume(&intf->dev);
+	s = ACCESS_ONCE(intf->dev.power.runtime_status);
+	if (s == RPM_SUSPENDING || s == RPM_SUSPENDED)
+		status = pm_request_resume(&intf->dev);
+
+	if (status < 0 && status != -EINPROGRESS)
+		pm_runtime_put_noidle(&intf->dev);
+	else
 		atomic_inc(&intf->pm_usage_cnt);
-		if (atomic_read(&intf->pm_usage_cnt) > 0 &&
-				udev->state == USB_STATE_SUSPENDED)
-			queue_work(ksuspend_usb_wq, &udev->autoresume);
-	}
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
+	if (status > 0)
+		status = 0;
 	return status;
 }
 EXPORT_SYMBOL_GPL(usb_autopm_get_interface_async);
 
-#else
-
-void usb_autosuspend_work(struct work_struct *work)
-{}
-
-void usb_autoresume_work(struct work_struct *work)
-{}
-
-#endif /* CONFIG_USB_SUSPEND */
-
 /**
- * usb_external_suspend_device - external suspend of a USB device and its interfaces
- * @udev: the usb_device to suspend
- * @msg: Power Management message describing this state transition
+ * usb_autopm_get_interface_no_resume - increment a USB interface's PM-usage counter
+ * @intf: the usb_interface whose counter should be incremented
  *
- * This routine handles external suspend requests: ones not generated
- * internally by a USB driver (autosuspend) but rather coming from the user
- * (via sysfs) or the PM core (system sleep).  The suspend will be carried
- * out regardless of @udev's usage counter or those of its interfaces,
- * and regardless of whether or not remote wakeup is enabled.  Of course,
- * interface drivers still have the option of failing the suspend (if
- * there are unsuspended children, for example).
+ * This routine increments @intf's usage counter but does not carry out an
+ * autoresume.
  *
- * The caller must hold @udev's device lock.
+ * This routine can run in atomic context.
  */
-int usb_external_suspend_device(struct usb_device *udev, pm_message_t msg)
+void usb_autopm_get_interface_no_resume(struct usb_interface *intf)
 {
-	int	status;
+	struct usb_device	*udev = interface_to_usbdev(intf);
 
-	do_unbind_rebind(udev, DO_UNBIND);
-	usb_pm_lock(udev);
-	status = usb_suspend_both(udev, msg);
-	usb_pm_unlock(udev);
-	return status;
-}
-
-/**
- * usb_external_resume_device - external resume of a USB device and its interfaces
- * @udev: the usb_device to resume
- * @msg: Power Management message describing this state transition
- *
- * This routine handles external resume requests: ones not generated
- * internally by a USB driver (autoresume) but rather coming from the user
- * (via sysfs), the PM core (system resume), or the device itself (remote
- * wakeup).  @udev's usage counter is unaffected.
- *
- * The caller must hold @udev's device lock.
- */
-int usb_external_resume_device(struct usb_device *udev, pm_message_t msg)
-{
-	int	status;
-
-	usb_pm_lock(udev);
-	status = usb_resume_both(udev, msg);
 	udev->last_busy = jiffies;
-	usb_pm_unlock(udev);
-	if (status == 0)
-		do_unbind_rebind(udev, DO_REBIND);
-
-	/* Now that the device is awake, we can start trying to autosuspend
-	 * it again. */
-	if (status == 0)
-		usb_try_autosuspend_device(udev);
-	return status;
+	atomic_inc(&intf->pm_usage_cnt);
+	pm_runtime_get_noresume(&intf->dev);
 }
+EXPORT_SYMBOL_GPL(usb_autopm_get_interface_no_resume);
 
-int usb_suspend(struct device *dev, pm_message_t msg)
+/* Internal routine to check whether we may autosuspend a device. */
+static int autosuspend_check(struct usb_device *udev)
 {
-	struct usb_device	*udev;
+	int			i;
+	struct usb_interface	*intf;
+	unsigned long		suspend_time, j;
 
-	udev = to_usb_device(dev);
-
-	/* If udev is already suspended, we can skip this suspend and
-	 * we should also skip the upcoming system resume.  High-speed
-	 * root hubs are an exception; they need to resume whenever the
-	 * system wakes up in order for USB-PERSIST port handover to work
-	 * properly.
+	/* Fail if autosuspend is disabled, or any interfaces are in use, or
+	 * any interface drivers require remote wakeup but it isn't available.
 	 */
-	if (udev->state == USB_STATE_SUSPENDED) {
-		if (udev->parent || udev->speed != USB_SPEED_HIGH)
-			udev->skip_sys_resume = 1;
-		return 0;
+	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
+	if (udev->actconfig) {
+		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
+			intf = udev->actconfig->interface[i];
+
+			/* We don't need to check interfaces that are
+			 * disabled for runtime PM.  Either they are unbound
+			 * or else their drivers don't support autosuspend
+			 * and so they are permanently active.
+			 */
+			if (intf->dev.power.disable_depth)
+				continue;
+			if (atomic_read(&intf->dev.power.usage_count) > 0)
+				return -EBUSY;
+			if (intf->needs_remote_wakeup &&
+					!udev->do_remote_wakeup) {
+				dev_dbg(&udev->dev, "remote wakeup needed "
+						"for autosuspend\n");
+				return -EOPNOTSUPP;
+			}
+
+			/* Don't allow autosuspend if the device will need
+			 * a reset-resume and any of its interface drivers
+			 * doesn't include support or needs remote wakeup.
+			 */
+			if (udev->quirks & USB_QUIRK_RESET_RESUME) {
+				struct usb_driver *driver;
+
+				driver = to_usb_driver(intf->dev.driver);
+				if (!driver->reset_resume ||
+						intf->needs_remote_wakeup)
+					return -EOPNOTSUPP;
+			}
+		}
 	}
 
-	udev->skip_sys_resume = 0;
-	return usb_external_suspend_device(udev, msg);
+	/* If everything is okay but the device hasn't been idle for long
+	 * enough, queue a delayed autosuspend request.
+	 */
+	j = ACCESS_ONCE(jiffies);
+	suspend_time = udev->last_busy + udev->autosuspend_delay;
+	if (time_before(j, suspend_time)) {
+		pm_schedule_suspend(&udev->dev, jiffies_to_msecs(
+				round_jiffies_up_relative(suspend_time - j)));
+		return -EAGAIN;
+	}
+	return 0;
 }
 
-int usb_resume(struct device *dev, pm_message_t msg)
+static int usb_runtime_suspend(struct device *dev)
 {
-	struct usb_device	*udev;
-	int			status;
+	int	status = 0;
 
-	udev = to_usb_device(dev);
-
-	/* If udev->skip_sys_resume is set then udev was already suspended
-	 * when the system sleep started, so we don't want to resume it
-	 * during this system wakeup.
+	/* A USB device can be suspended if it passes the various autosuspend
+	 * checks.  Runtime suspend for a USB device means suspending all the
+	 * interfaces and then the device itself.
 	 */
-	if (udev->skip_sys_resume)
-		return 0;
-	status = usb_external_resume_device(udev, msg);
+	if (is_usb_device(dev)) {
+		struct usb_device	*udev = to_usb_device(dev);
 
-	/* Avoid PM error messages for devices disconnected while suspended
-	 * as we'll display regular disconnect messages just a bit later.
-	 */
-	if (status == -ENODEV)
-		return 0;
+		if (autosuspend_check(udev) != 0)
+			return -EAGAIN;
+
+		status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
+
+		/* If an interface fails the suspend, adjust the last_busy
+		 * time so that we don't get another suspend attempt right
+		 * away.
+		 */
+		if (status) {
+			udev->last_busy = jiffies +
+					(udev->autosuspend_delay == 0 ?
+						HZ/2 : 0);
+		}
+
+		/* Prevent the parent from suspending immediately after */
+		else if (udev->parent) {
+			udev->parent->last_busy = jiffies;
+		}
+	}
+
+	/* Runtime suspend for a USB interface doesn't mean anything. */
 	return status;
 }
 
-#endif /* CONFIG_PM */
+static int usb_runtime_resume(struct device *dev)
+{
+	/* Runtime resume for a USB device means resuming both the device
+	 * and all its interfaces.
+	 */
+	if (is_usb_device(dev)) {
+		struct usb_device	*udev = to_usb_device(dev);
+		int			status;
+
+		status = usb_resume_both(udev, PMSG_AUTO_RESUME);
+		udev->last_busy = jiffies;
+		return status;
+	}
+
+	/* Runtime resume for a USB interface doesn't mean anything. */
+	return 0;
+}
+
+static int usb_runtime_idle(struct device *dev)
+{
+	/* An idle USB device can be suspended if it passes the various
+	 * autosuspend checks.  An idle interface can be suspended at
+	 * any time.
+	 */
+	if (is_usb_device(dev)) {
+		struct usb_device	*udev = to_usb_device(dev);
+
+		if (autosuspend_check(udev) != 0)
+			return 0;
+	}
+
+	pm_runtime_suspend(dev);
+	return 0;
+}
+
+static struct dev_pm_ops usb_bus_pm_ops = {
+	.runtime_suspend =	usb_runtime_suspend,
+	.runtime_resume =	usb_runtime_resume,
+	.runtime_idle =		usb_runtime_idle,
+};
+
+#else
+
+#define usb_bus_pm_ops	(*(struct dev_pm_ops *) NULL)
+
+#endif /* CONFIG_USB_SUSPEND */
 
 struct bus_type usb_bus_type = {
 	.name =		"usb",
 	.match =	usb_device_match,
 	.uevent =	usb_uevent,
+	.pm =		&usb_bus_pm_ops,
 };

drivers/usb/core/file.c

···
 	int err = -ENODEV;
 	const struct file_operations *old_fops, *new_fops = NULL;
 
-	lock_kernel();
 	down_read(&minor_rwsem);
 	c = usb_minors[minor];
 
···
 	fops_put(old_fops);
  done:
 	up_read(&minor_rwsem);
-	unlock_kernel();
 	return err;
 }
 

drivers/usb/core/hcd.c

···
 #include <linux/platform_device.h>
 #include <linux/workqueue.h>
 #include <linux/mutex.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/usb.h>
 
···
 	0x09,       /*  __u8  bMaxPacketSize0; 2^9 = 512 Bytes */
 
 	0x6b, 0x1d, /*  __le16 idVendor; Linux Foundation */
-	0x02, 0x00, /*  __le16 idProduct; device 0x0002 */
+	0x03, 0x00, /*  __le16 idProduct; device 0x0003 */
 	KERNEL_VER, KERNEL_REL, /*  __le16 bcdDevice */
 
 	0x03,       /*  __u8  iManufacturer; */
···
 			}
 		}
 		for (i = 0; i < num_intfs; ++i) {
+			struct usb_host_interface *first_alt;
+			int iface_num;
+
+			first_alt = &new_config->intf_cache[i]->altsetting[0];
+			iface_num = first_alt->desc.bInterfaceNumber;
 			/* Set up endpoints for alternate interface setting 0 */
-			alt = usb_find_alt_setting(new_config, i, 0);
+			alt = usb_find_alt_setting(new_config, iface_num, 0);
 			if (!alt)
 				/* No alt setting 0? Pick the first setting. */
-				alt = &new_config->intf_cache[i]->altsetting[0];
+				alt = first_alt;
 
 			for (j = 0; j < alt->desc.bNumEndpoints; j++) {
 				ret = hcd->driver->add_endpoint(hcd, udev, &alt->endpoint[j]);
···
 	return status;
 }
 
+#endif	/* CONFIG_PM */
+
+#ifdef	CONFIG_USB_SUSPEND
+
 /* Workqueue routine for root-hub remote wakeup */
 static void hcd_resume_work(struct work_struct *work)
 {
···
 	struct usb_device *udev = hcd->self.root_hub;
 
 	usb_lock_device(udev);
-	usb_mark_last_busy(udev);
-	usb_external_resume_device(udev, PMSG_REMOTE_RESUME);
+	usb_remote_wakeup(udev);
 	usb_unlock_device(udev);
 }
 
···
 
 	spin_lock_irqsave (&hcd_root_hub_lock, flags);
 	if (hcd->rh_registered)
-		queue_work(ksuspend_usb_wq, &hcd->wakeup_work);
+		queue_work(pm_wq, &hcd->wakeup_work);
 	spin_unlock_irqrestore (&hcd_root_hub_lock, flags);
 }
 EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
 
-#endif
+#endif	/* CONFIG_USB_SUSPEND */
 
 /*-------------------------------------------------------------------------*/
 
···
 	init_timer(&hcd->rh_timer);
 	hcd->rh_timer.function = rh_timer_func;
 	hcd->rh_timer.data = (unsigned long) hcd;
-#ifdef CONFIG_PM
+#ifdef CONFIG_USB_SUSPEND
 	INIT_WORK(&hcd->wakeup_work, hcd_resume_work);
 #endif
 	mutex_init(&hcd->bandwidth_mutex);
···
 	hcd->rh_registered = 0;
 	spin_unlock_irq (&hcd_root_hub_lock);
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_USB_SUSPEND
 	cancel_work_sync(&hcd->wakeup_work);
 #endif
 

drivers/usb/core/hcd.h

···
 
 	struct timer_list	rh_timer;	/* drives root-hub polling */
 	struct urb		*status_urb;	/* the current status urb */
-#ifdef CONFIG_PM
+#ifdef CONFIG_USB_SUSPEND
 	struct work_struct	wakeup_work;	/* for remote wakeup */
 #endif
 
···
 	/* xHCI specific functions */
 		/* Called by usb_alloc_dev to alloc HC device structures */
 	int	(*alloc_dev)(struct usb_hcd *, struct usb_device *);
-		/* Called by usb_release_dev to free HC device structures */
+		/* Called by usb_disconnect to free HC device structures */
 	void	(*free_dev)(struct usb_hcd *, struct usb_device *);
 
 	/* Bandwidth computation functions */
···
 		 */
 	int	(*update_hub_device)(struct usb_hcd *, struct usb_device *hdev,
 			struct usb_tt *tt, gfp_t mem_flags);
+	int	(*reset_device)(struct usb_hcd *, struct usb_device *);
 };
 
 extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);
···
 #define usb_endpoint_out(ep_dir)	(!((ep_dir) & USB_DIR_IN))
 
 #ifdef CONFIG_PM
-extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
 extern void usb_root_hub_lost_power(struct usb_device *rhdev);
 extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg);
 extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg);
+#endif /* CONFIG_PM */
+
+#ifdef CONFIG_USB_SUSPEND
+extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
 #else
 static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
 {
 	return;
 }
-#endif /* CONFIG_PM */
+#endif /* CONFIG_USB_SUSPEND */
+
 
 /*
  * USB device fs stuff

drivers/usb/core/hub.c

···
 #include <linux/kthread.h>
 #include <linux/mutex.h>
 #include <linux/freezer.h>
+#include <linux/pm_runtime.h>
 
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
···
 
 	unsigned		mA_per_port;	/* current for each child */
 
-	unsigned		init_done:1;
 	unsigned		limited_power:1;
 	unsigned		quiescing:1;
 	unsigned		disconnected:1;
···
 	}
  init3:
 	hub->quiescing = 0;
-	hub->init_done = 1;
 
 	status = usb_submit_urb(hub->urb, GFP_NOIO);
 	if (status < 0)
···
 	int i;
 
 	cancel_delayed_work_sync(&hub->init_work);
-	if (!hub->init_done) {
-		hub->init_done = 1;
-		usb_autopm_put_interface_no_suspend(
-				to_usb_interface(hub->intfdev));
-	}
 
 	/* khubd and related activity won't re-trigger */
 	hub->quiescing = 1;
···
 	desc = intf->cur_altsetting;
 	hdev = interface_to_usbdev(intf);
 
+	/* Hubs have proper suspend/resume support */
+	usb_enable_autosuspend(hdev);
+
 	if (hdev->level == MAX_TOPO_LEVEL) {
 		dev_err(&intf->dev,
 			"Unsupported bus topology: hub nested too deep\n");
···
 		if (udev->children[i])
 			recursively_mark_NOTATTACHED(udev->children[i]);
 	}
-	if (udev->state == USB_STATE_SUSPENDED) {
-		udev->discon_suspended = 1;
+	if (udev->state == USB_STATE_SUSPENDED)
 		udev->active_duration -= jiffies;
-	}
 	udev->state = USB_STATE_NOTATTACHED;
 }
 
···
 					|| new_state == USB_STATE_SUSPENDED)
 				;	/* No change to wakeup settings */
 			else if (new_state == USB_STATE_CONFIGURED)
-				device_init_wakeup(&udev->dev,
+				device_set_wakeup_capable(&udev->dev,
 					(udev->actconfig->desc.bmAttributes
 					 & USB_CONFIG_ATT_WAKEUP));
 			else
-				device_init_wakeup(&udev->dev, 0);
+				device_set_wakeup_capable(&udev->dev, 0);
 		}
 		if (udev->state == USB_STATE_SUSPENDED &&
 			new_state != USB_STATE_SUSPENDED)
···
 		udev->devnum = devnum;
 }
 
-#ifdef	CONFIG_USB_SUSPEND
-
-static void usb_stop_pm(struct usb_device *udev)
+static void hub_free_dev(struct usb_device *udev)
 {
-	/* Synchronize with the ksuspend thread to prevent any more
-	 * autosuspend requests from being submitted, and decrement
-	 * the parent's count of unsuspended children.
-	 */
-	usb_pm_lock(udev);
-	if (udev->parent && !udev->discon_suspended)
-		usb_autosuspend_device(udev->parent);
-	usb_pm_unlock(udev);
+	struct usb_hcd *hcd = bus_to_hcd(udev->bus);
 
-	/* Stop any autosuspend or autoresume requests already submitted */
-	cancel_delayed_work_sync(&udev->autosuspend);
-	cancel_work_sync(&udev->autoresume);
+	/* Root hubs aren't real devices, so don't free HCD resources */
+	if (hcd->driver->free_dev && udev->parent)
+		hcd->driver->free_dev(hcd, udev);
 }
-
-#else
-
-static inline void usb_stop_pm(struct usb_device *udev)
-{ }
-
-#endif
 
 /**
  * usb_disconnect - disconnect a device (usbcore-internal)
···
 	*pdev = NULL;
 	spin_unlock_irq(&device_state_lock);
 
-	usb_stop_pm(udev);
+	hub_free_dev(udev);
 
 	put_device(&udev->dev);
 }
···
 {
 	int err;
 
-	/* Increment the parent's count of unsuspended children */
-	if (udev->parent)
-		usb_autoresume_device(udev->parent);
+	if (udev->parent) {
+		/* Initialize non-root-hub device wakeup to disabled;
+		 * device (un)configuration controls wakeup capable
+		 * sysfs power/wakeup controls wakeup enabled/disabled
+		 */
+		device_init_wakeup(&udev->dev, 0);
+		device_set_wakeup_enable(&udev->dev, 1);
+	}
+
+	/* Tell the runtime-PM framework the device is active */
+	pm_runtime_set_active(&udev->dev);
+	pm_runtime_enable(&udev->dev);
 
 	usb_detect_quirks(udev);
 	err = usb_enumerate_device(udev);	/* Read descriptors */
···
 
 fail:
 	usb_set_device_state(udev, USB_STATE_NOTATTACHED);
-	usb_stop_pm(udev);
+	pm_runtime_disable(&udev->dev);
+	pm_runtime_set_suspended(&udev->dev);
 	return err;
 }
 
···
 		if (!(portstatus & USB_PORT_STAT_RESET) &&
 		    (portstatus & USB_PORT_STAT_ENABLE)) {
 			if (hub_is_wusb(hub))
-				udev->speed = USB_SPEED_VARIABLE;
+				udev->speed = USB_SPEED_WIRELESS;
 			else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
 				udev->speed = USB_SPEED_HIGH;
 			else if (portstatus & USB_PORT_STAT_LOW_SPEED)
···
 				struct usb_device *udev, unsigned int delay)
 {
 	int i, status;
+	struct usb_hcd *hcd;
 
+	hcd = bus_to_hcd(udev->bus);
 	/* Block EHCI CF initialization during the port reset.
 	 * Some companion controllers don't like it when they mix.
 	 */
···
 			/* TRSTRCY = 10 ms; plus some extra */
 			msleep(10 + 40);
 			update_address(udev, 0);
+			if (hcd->driver->reset_device) {
+				status = hcd->driver->reset_device(hcd, udev);
+				if (status < 0) {
+					dev_err(&udev->dev, "Cannot reset "
+							"HCD device state\n");
+					break;
+				}
+			}
 			/* FALL THROUGH */
 		case -ENOTCONN:
 		case -ENODEV:
···
 }
 
 /* caller has locked udev */
-static int remote_wakeup(struct usb_device *udev)
+int usb_remote_wakeup(struct usb_device *udev)
 {
 	int	status = 0;
 
 	if (udev->state == USB_STATE_SUSPENDED) {
 		dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-");
-		usb_mark_last_busy(udev);
-		status = usb_external_resume_device(udev, PMSG_REMOTE_RESUME);
+		status = usb_autoresume_device(udev);
+		if (status == 0) {
+			/* Let the drivers do their thing, then... */
+			usb_autosuspend_device(udev);
+		}
 	}
 	return status;
 }
···
 		status = usb_reset_and_verify_device(udev);
 	}
 	return status;
-}
-
-static inline int remote_wakeup(struct usb_device *udev)
-{
-	return 0;
 }
 
 #endif
···
 EXPORT_SYMBOL_GPL(usb_root_hub_lost_power);
 
 #else	/* CONFIG_PM */
-
-static inline int remote_wakeup(struct usb_device *udev)
-{
-	return 0;
-}
 
 #define hub_suspend		NULL
 #define hub_resume		NULL
···
 
 	mutex_lock(&usb_address0_mutex);
 
-	if ((hcd->driver->flags & HCD_USB3) && udev->config) {
-		/* FIXME this will need special handling by the xHCI driver. */
-		dev_dbg(&udev->dev,
-				"xHCI reset of configured device "
-				"not supported yet.\n");
-		retval = -EINVAL;
-		goto fail;
-	} else if (!udev->config && oldspeed == USB_SPEED_SUPER) {
+	if (!udev->config && oldspeed == USB_SPEED_SUPER) {
 		/* Don't reset USB 3.0 devices during an initial setup */
 		usb_set_device_state(udev, USB_STATE_DEFAULT);
 	} else {
···
 	 */
 	switch (udev->speed) {
 	case USB_SPEED_SUPER:
-	case USB_SPEED_VARIABLE:	/* fixed at 512 */
+	case USB_SPEED_WIRELESS:	/* fixed at 512 */
 		udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512);
 		break;
 	case USB_SPEED_HIGH:		/* fixed at 64 */
···
 	case USB_SPEED_SUPER:
 				speed = "super";
 				break;
-	case USB_SPEED_VARIABLE:
+	case USB_SPEED_WIRELESS:
 				speed = "variable";
 				type = "Wireless ";
 				break;
···
 			/* For a suspended device, treat this as a
 			 * remote wakeup event.
 			 */
-			status = remote_wakeup(udev);
+			status = usb_remote_wakeup(udev);
 #endif
 
 		} else {
···
 loop:
 		usb_ep0_reinit(udev);
 		release_address(udev);
+		hub_free_dev(udev);
 		usb_put_dev(udev);
 		if ((status == -ENOTCONN) || (status == -ENOTSUPP))
 			break;
···
 		 * disconnected while waiting for the lock to succeed. */
 		usb_lock_device(hdev);
 		if (unlikely(hub->disconnected))
-			goto loop2;
+			goto loop_disconnected;
 
 		/* If the hub has died, clean up after it */
 		if (hdev->state == USB_STATE_NOTATTACHED) {
···
 					msleep(10);
 
 					usb_lock_device(udev);
-					ret = remote_wakeup(hdev->
+					ret = usb_remote_wakeup(hdev->
 							children[i-1]);
 					usb_unlock_device(udev);
 					if (ret < 0)
···
 		 * kick_khubd() and allow autosuspend.
 		 */
 		usb_autopm_put_interface(intf);
- loop2:
+ loop_disconnected:
 		usb_unlock_device(hdev);
 		kref_put(&hub->kref, hub_release);
 
···
 	return 0;
 }
 
-static struct usb_device_id hub_id_table [] = {
+static const struct usb_device_id hub_id_table[] = {
     { .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS,
       .bDeviceClass = USB_CLASS_HUB},
     { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,

drivers/usb/core/message.c

···
 
 	alt = usb_altnum_to_altsetting(iface, alternate);
 	if (!alt) {
-		dev_warn(&dev->dev, "selecting invalid altsetting %d",
+		dev_warn(&dev->dev, "selecting invalid altsetting %d\n",
 			 alternate);
 		return -EINVAL;
 	}
···
 	/* If not, reinstate the old alternate settings */
 	if (retval < 0) {
 reset_old_alts:
-		for (; i >= 0; i--) {
+		for (i--; i >= 0; i--) {
 			struct usb_interface *intf = config->interface[i];
 			struct usb_host_interface *alt;
 
···
 		intf->dev.dma_mask = dev->dev.dma_mask;
 		INIT_WORK(&intf->reset_ws, __usb_queue_reset_device);
 		device_initialize(&intf->dev);
-		mark_quiesced(intf);
 		dev_set_name(&intf->dev, "%d-%s:%d.%d",
 			dev->bus->busnum, dev->devpath,
 			configuration, alt->desc.bInterfaceNumber);

drivers/usb/core/quirks.c

···
 		dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
 				udev->quirks);
 
-	/* By default, disable autosuspend for all non-hubs */
 #ifdef	CONFIG_USB_SUSPEND
-	if (udev->descriptor.bDeviceClass != USB_CLASS_HUB)
-		udev->autosuspend_disabled = 1;
+
+	/* By default, disable autosuspend for all devices.  The hub driver
+	 * will enable it for hubs.
+	 */
+	usb_disable_autosuspend(udev);
+
+	/* Autosuspend can also be disabled if the initial autosuspend_delay
+	 * is negative.
+	 */
+	if (udev->autosuspend_delay < 0)
+		usb_autoresume_device(udev);
+
 #endif
 
 	/* For the present, all devices default to USB-PERSIST enabled */
···
 	 * for all devices.  It will affect things like hub resets
 	 * and EMF-related port disables.
 	 */
-	udev->persist_enabled = 1;
+	if (!(udev->quirks & USB_QUIRK_RESET_MORPHS))
+		udev->persist_enabled = 1;
 #endif	/* CONFIG_PM */
 }

drivers/usb/core/sysfs.c

···
 	case USB_SPEED_HIGH:
 		speed = "480";
 		break;
-	case USB_SPEED_VARIABLE:
+	case USB_SPEED_WIRELESS:
 		speed = "480";
 		break;
 	case USB_SPEED_SUPER:
···
 static DEVICE_ATTR(quirks, S_IRUGO, show_quirks, NULL);
 
 static ssize_t
+show_avoid_reset_quirk(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct usb_device *udev;
+
+	udev = to_usb_device(dev);
+	return sprintf(buf, "%d\n", !!(udev->quirks & USB_QUIRK_RESET_MORPHS));
+}
+
+static ssize_t
+set_avoid_reset_quirk(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	struct usb_device	*udev = to_usb_device(dev);
+	int			config;
+
+	if (sscanf(buf, "%d", &config) != 1 || config < 0 || config > 1)
+		return -EINVAL;
+	usb_lock_device(udev);
+	if (config)
+		udev->quirks |= USB_QUIRK_RESET_MORPHS;
+	else
+		udev->quirks &= ~USB_QUIRK_RESET_MORPHS;
+	usb_unlock_device(udev);
+	return count;
+}
+
+static DEVICE_ATTR(avoid_reset_quirk, S_IRUGO | S_IWUSR,
+		show_avoid_reset_quirk, set_avoid_reset_quirk);
+
+static ssize_t
 show_urbnum(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct usb_device *udev;
···
 
 	if (sscanf(buf, "%d", &value) != 1)
 		return -EINVAL;
-	usb_pm_lock(udev);
+
+	usb_lock_device(udev);
 	udev->persist_enabled = !!value;
-	usb_pm_unlock(udev);
+	usb_unlock_device(udev);
 	return count;
 }
 
···
 		const char *buf, size_t count)
 {
 	struct usb_device *udev = to_usb_device(dev);
-	int value;
+	int value, old_delay;
+	int rc;
 
 	if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/HZ ||
 			value <= - INT_MAX/HZ)
 		return -EINVAL;
 	value *= HZ;
 
+	usb_lock_device(udev);
+	old_delay = udev->autosuspend_delay;
 	udev->autosuspend_delay = value;
-	if (value >= 0)
-		usb_try_autosuspend_device(udev);
-	else {
-		if (usb_autoresume_device(udev) == 0)
+
+	if (old_delay < 0) {	/* Autosuspend wasn't allowed */
+		if (value >= 0)
 			usb_autosuspend_device(udev);
+	} else {		/* Autosuspend was allowed */
+		if (value < 0) {
+			rc = usb_autoresume_device(udev);
+			if (rc < 0) {
+				count = rc;
+				udev->autosuspend_delay = old_delay;
+			}
+		} else {
+			usb_try_autosuspend_device(udev);
+		}
 	}
+
+	usb_unlock_device(udev);
 	return count;
 }
 
···
 	struct usb_device *udev = to_usb_device(dev);
 	int len = count;
 	char *cp;
-	int rc = 0;
-	int old_autosuspend_disabled;
+	int rc;
 
 	cp = memchr(buf, '\n', count);
 	if (cp)
 		len = cp - buf;
 
 	usb_lock_device(udev);
-	old_autosuspend_disabled = udev->autosuspend_disabled;
 
-	/* Setting the flags without calling usb_pm_lock is a subject to
-	 * races, but who cares...
-	 */
 	if (len == sizeof on_string - 1 &&
-			strncmp(buf, on_string, len) == 0) {
-		udev->autosuspend_disabled = 1;
-		rc = usb_external_resume_device(udev, PMSG_USER_RESUME);
+			strncmp(buf, on_string, len) == 0)
+		rc = usb_disable_autosuspend(udev);
 
-	} else if (len == sizeof auto_string - 1 &&
-			strncmp(buf, auto_string, len) == 0) {
-		udev->autosuspend_disabled = 0;
-		rc = usb_external_resume_device(udev, PMSG_USER_RESUME);
+	else if (len == sizeof auto_string - 1 &&
+			strncmp(buf, auto_string, len) == 0)
+		rc = usb_enable_autosuspend(udev);
 
-	} else
+	else
 		rc = -EINVAL;
 
-	if (rc)
-		udev->autosuspend_disabled = old_autosuspend_disabled;
 	usb_unlock_device(udev);
 	return (rc < 0 ? rc : count);
 }
···
 	&dev_attr_version.attr,
 	&dev_attr_maxchild.attr,
 	&dev_attr_quirks.attr,
+	&dev_attr_avoid_reset_quirk.attr,
 	&dev_attr_authorized.attr,
 	&dev_attr_remove.attr,
 	NULL,

drivers/usb/core/urb.c

···
 	{
 	unsigned int	orig_flags = urb->transfer_flags;
 	unsigned int	allowed;
+	static int pipetypes[4] = {
+		PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
+	};
+
+	/* Check that the pipe's type matches the endpoint's type */
+	if (usb_pipetype(urb->pipe) != pipetypes[xfertype])
+		return -EPIPE;		/* The most suitable error code :-) */
 
 	/* enforce simple/standard policy */
 	allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP |
···
 	case USB_ENDPOINT_XFER_INT:
 		/* too small? */
 		switch (dev->speed) {
-		case USB_SPEED_VARIABLE:
+		case USB_SPEED_WIRELESS:
 			if (urb->interval < 6)
 				return -EINVAL;
 			break;
···
 			if (urb->interval > (1 << 15))
 				return -EINVAL;
 			max = 1 << 15;
-		case USB_SPEED_VARIABLE:
+		case USB_SPEED_WIRELESS:
 			if (urb->interval > 16)
 				return -EINVAL;
 			break;
···
 		default:
 			return -EINVAL;
 		}
-		if (dev->speed != USB_SPEED_VARIABLE) {
+		if (dev->speed != USB_SPEED_WIRELESS) {
 			/* Round down to a power of 2, no more than max */
 			urb->interval = min(max, 1 << ilog2(urb->interval));
 		}

drivers/usb/core/usb.c

···
 
 static int nousb;	/* Disable USB when built into kernel image */
 
-/* Workqueue for autosuspend and for remote wakeup of root hubs */
-struct workqueue_struct *ksuspend_usb_wq;
-
 #ifdef	CONFIG_USB_SUSPEND
 static int usb_autosuspend_delay = 2;		/* Default delay value,
 						 * in seconds */
···
 	hcd = bus_to_hcd(udev->bus);
 
 	usb_destroy_configuration(udev);
-	/* Root hubs aren't real devices, so don't free HCD resources */
-	if (hcd->driver->free_dev && udev->parent)
-		hcd->driver->free_dev(hcd, udev);
 	usb_put_hcd(hcd);
 	kfree(udev->product);
 	kfree(udev->manufacturer);
···
 
 #ifdef	CONFIG_PM
 
-static int ksuspend_usb_init(void)
-{
-	/* This workqueue is supposed to be both freezable and
-	 * singlethreaded.  Its job doesn't justify running on more
-	 * than one CPU.
-	 */
-	ksuspend_usb_wq = create_freezeable_workqueue("ksuspend_usbd");
-	if (!ksuspend_usb_wq)
-		return -ENOMEM;
-	return 0;
-}
-
-static void ksuspend_usb_cleanup(void)
-{
-	destroy_workqueue(ksuspend_usb_wq);
-}
-
 /* USB device Power-Management thunks.
  * There's no need to distinguish here between quiescing a USB device
  * and powering it down; the generic_suspend() routine takes care of
···
 static void usb_dev_complete(struct device *dev)
 {
 	/* Currently used only for rebinding interfaces */
-	usb_resume(dev, PMSG_RESUME);	/* Message event is meaningless */
+	usb_resume(dev, PMSG_ON);	/* FIXME: change to PMSG_COMPLETE */
 }
 
 static int usb_dev_suspend(struct device *dev)
···
 
 #else
 
-#define ksuspend_usb_init()	0
-#define ksuspend_usb_cleanup()	do {} while (0)
-#define usb_device_pm_ops	(*(struct dev_pm_ops *)0)
+#define usb_device_pm_ops	(*(struct dev_pm_ops *) NULL)
 
 #endif	/* CONFIG_PM */
 
···
 	INIT_LIST_HEAD(&dev->filelist);
 
 #ifdef	CONFIG_PM
-	mutex_init(&dev->pm_mutex);
-	INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work);
-	INIT_WORK(&dev->autoresume, usb_autoresume_work);
 	dev->autosuspend_delay = usb_autosuspend_delay * HZ;
 	dev->connect_time = jiffies;
 	dev->active_duration = -jiffies;
···
 	if (retval)
 		goto out;
 
-	retval = ksuspend_usb_init();
-	if (retval)
-		goto out;
 	retval = bus_register(&usb_bus_type);
 	if (retval)
 		goto bus_register_failed;
···
 bus_notifier_failed:
 	bus_unregister(&usb_bus_type);
 bus_register_failed:
-	ksuspend_usb_cleanup();
+	usb_debugfs_cleanup();
 out:
 	return retval;
 }
···
 	usb_hub_cleanup();
 	bus_unregister_notifier(&usb_bus_type, &usb_bus_nb);
 	bus_unregister(&usb_bus_type);
-	ksuspend_usb_cleanup();
 	usb_debugfs_cleanup();
 }
 

drivers/usb/core/usb.h

···
 extern int usb_suspend(struct device *dev, pm_message_t msg);
 extern int usb_resume(struct device *dev, pm_message_t msg);
 
-extern void usb_autosuspend_work(struct work_struct *work);
-extern void usb_autoresume_work(struct work_struct *work);
 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
-extern int usb_external_suspend_device(struct usb_device *udev,
-		pm_message_t msg);
-extern int usb_external_resume_device(struct usb_device *udev,
-		pm_message_t msg);
-
-static inline void usb_pm_lock(struct usb_device *udev)
-{
-	mutex_lock_nested(&udev->pm_mutex, udev->level);
-}
-
-static inline void usb_pm_unlock(struct usb_device *udev)
-{
-	mutex_unlock(&udev->pm_mutex);
-}
 
 #else
 
···
 	return 0;
 }
 
-static inline void usb_pm_lock(struct usb_device *udev) {}
-static inline void usb_pm_unlock(struct usb_device *udev) {}
-
 #endif
 
 #ifdef CONFIG_USB_SUSPEND
···
 extern void usb_autosuspend_device(struct usb_device *udev);
 extern void usb_try_autosuspend_device(struct usb_device *udev);
 extern int usb_autoresume_device(struct usb_device *udev);
+extern int usb_remote_wakeup(struct usb_device *dev);
 
 #else
 
···
 	return 0;
 }
 
+static inline int usb_remote_wakeup(struct usb_device *udev)
+{
+	return 0;
+}
+
 #endif
 
-extern struct workqueue_struct *ksuspend_usb_wq;
 extern struct bus_type usb_bus_type;
 extern struct device_type usb_device_type;
 extern struct device_type usb_if_device_type;
···
 {
 	return container_of(drv, struct usbdrv_wrap, driver)->
 			for_devices;
-}
-
-/* Interfaces and their "power state" are owned by usbcore */
-
-static inline void mark_active(struct usb_interface *f)
-{
-	f->is_active = 1;
-}
-
-static inline void mark_quiesced(struct usb_interface *f)
-{
-	f->is_active = 0;
-}
-
-static inline int is_active(const struct usb_interface *f)
-{
-	return f->is_active;
 }
 
 

drivers/usb/early/ehci-dbgp.c

···
 
 #define USB_DEBUG_DEVNUM 127
 
-#define DBGP_DATA_TOGGLE	0x8800
-
 #ifdef DBGP_DEBUG
 #define dbgp_printk printk
 static void dbgp_ehci_status(char *str)
···
 static inline void dbgp_ehci_status(char *str) { }
 static inline void dbgp_printk(const char *fmt, ...) { }
 #endif
-
-static inline u32 dbgp_pid_update(u32 x, u32 tok)
-{
-	return ((x ^ DBGP_DATA_TOGGLE) & 0xffff00) | (tok & 0xff);
-}
 
 static inline u32 dbgp_len_update(u32 x, u32 len)
 {
···
 
 #define DBGP_MAX_PACKET		8
 #define DBGP_TIMEOUT		(250 * 1000)
+#define DBGP_LOOPS		1000
+
+static inline u32 dbgp_pid_write_update(u32 x, u32 tok)
+{
+	static int data0 = USB_PID_DATA1;
+	data0 ^= USB_PID_DATA_TOGGLE;
+	return (x & 0xffff0000) | (data0 << 8) | (tok & 0xff);
+}
+
+static inline u32 dbgp_pid_read_update(u32 x, u32 tok)
+{
+	return (x & 0xffff0000) | (USB_PID_DATA0 << 8) | (tok & 0xff);
+}
 
 static int dbgp_wait_until_complete(void)
 {
···
 {
 	u32 pids, lpid;
 	int ret;
-	int loop = 3;
+	int loop = DBGP_LOOPS;
 
 retry:
 	writel(ctrl | DBGP_GO, &ehci_debug->control);
···
 		 */
 		if (ret == -DBGP_TIMEOUT && !dbgp_not_safe)
 			dbgp_not_safe = 1;
+		if (ret == -DBGP_ERR_BAD && --loop > 0)
+			goto retry;
 		return ret;
 	}
 
···
 		bytes[i] = (hi >> (8*(i - 4))) & 0xff;
 }
 
-static int dbgp_out(u32 addr, const char *bytes, int size)
+static int dbgp_bulk_write(unsigned devnum, unsigned endpoint,
+			 const char *bytes, int size)
 {
+	int ret;
+	u32 addr;
 	u32 pids, ctrl;
 
+	if (size > DBGP_MAX_PACKET)
+		return -1;
+
+	addr = DBGP_EPADDR(devnum, endpoint);
+
 	pids = readl(&ehci_debug->pids);
-	pids = dbgp_pid_update(pids, USB_PID_OUT);
+	pids = dbgp_pid_write_update(pids, USB_PID_OUT);
 
 	ctrl = readl(&ehci_debug->control);
 	ctrl = dbgp_len_update(ctrl, size);
···
 	dbgp_set_data(bytes, size);
 	writel(addr, &ehci_debug->address);
 	writel(pids, &ehci_debug->pids);
-	return dbgp_wait_until_done(ctrl);
-}
-
-static int dbgp_bulk_write(unsigned devnum, unsigned endpoint,
-			 const char *bytes, int size)
-{
-	int ret;
-	int loops = 5;
-	u32 addr;
-	if (size > DBGP_MAX_PACKET)
-		return -1;
-
-	addr = DBGP_EPADDR(devnum, endpoint);
-try_again:
-	if (loops--) {
-		ret = dbgp_out(addr, bytes, size);
-		if (ret == -DBGP_ERR_BAD) {
-			int try_loops = 3;
-			do {
-				/* Emit a dummy packet to re-sync communication
-				 * with the debug device */
-				if (dbgp_out(addr, "12345678", 8) >= 0) {
-					udelay(2);
-					goto try_again;
-				}
-			} while (try_loops--);
-		}
-	}
+	ret = dbgp_wait_until_done(ctrl);
 
 	return ret;
 }
···
 	addr = DBGP_EPADDR(devnum, endpoint);
 
 	pids = readl(&ehci_debug->pids);
-	pids = dbgp_pid_update(pids, USB_PID_IN);
+	pids = dbgp_pid_read_update(pids, USB_PID_IN);
 
 	ctrl = readl(&ehci_debug->control);
 	ctrl = dbgp_len_update(ctrl, size);
···
 	/* Read the result */
 	return dbgp_bulk_read(devnum, 0, data, size);
 }
-
 
 /* Find a PCI capability */
 static u32 __init find_cap(u32 num, u32 slot, u32 func, int cap)

drivers/usb/gadget/Kconfig

···
 	  Say "y" to link the driver statically, or "m" to build a
 	  dynamically linked module.
 
+config USB_G_NOKIA
+	tristate "Nokia composite gadget"
+	depends on PHONET
+	help
+	  The Nokia composite gadget provides support for acm, obex
+	  and phonet in only one composite gadget driver.
+
+	  It's only really useful for N900 hardware. If you're building
+	  a kernel for N900, say Y or M here. If unsure, say N.
+
 config USB_G_MULTI
 	tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
 	depends on BLOCK && NET

drivers/usb/gadget/Makefile

···
 g_printer-objs			:= printer.o
 g_cdc-objs			:= cdc2.o
 g_multi-objs			:= multi.o
+g_nokia-objs			:= nokia.o
 
 obj-$(CONFIG_USB_ZERO)		+= g_zero.o
 obj-$(CONFIG_USB_AUDIO)		+= g_audio.o
···
 obj-$(CONFIG_USB_MIDI_GADGET)	+= g_midi.o
 obj-$(CONFIG_USB_CDC_COMPOSITE) += g_cdc.o
 obj-$(CONFIG_USB_G_MULTI)	+= g_multi.o
+obj-$(CONFIG_USB_G_NOKIA)	+= g_nokia.o
 

drivers/usb/gadget/at91_udc.c

···
 	if (!res)
 		return -ENXIO;
 
-	if (!request_mem_region(res->start,
-			res->end - res->start + 1,
-			driver_name)) {
+	if (!request_mem_region(res->start, resource_size(res), driver_name)) {
 		DBG("someone's using UDC memory\n");
 		return -EBUSY;
 	}
···
 		udc->ep[3].maxpacket = 64;
 	}
 
-	udc->udp_baseaddr = ioremap(res->start, res->end - res->start + 1);
+	udc->udp_baseaddr = ioremap(res->start, resource_size(res));
 	if (!udc->udp_baseaddr) {
 		retval = -ENOMEM;
 		goto fail0a;
···
 	if (cpu_is_at91rm9200())
 		gpio_free(udc->board.pullup_pin);
 fail0:
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
 	DBG("%s probe failed, %d\n", driver_name, retval);
 	return retval;
 }
···
 		gpio_free(udc->board.pullup_pin);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
 
 	clk_put(udc->iclk);
 	clk_put(udc->fclk);

drivers/usb/gadget/atmel_usba_udc.c

···
 static int vbus_is_present(struct usba_udc *udc)
 {
 	if (gpio_is_valid(udc->vbus_pin))
-		return gpio_get_value(udc->vbus_pin);
+		return gpio_get_value(udc->vbus_pin) ^ udc->vbus_pin_inverted;
 
 	/* No Vbus detection: Assume always present */
 	return 1;
···
 	if (!udc->driver)
 		goto out;
 
-	vbus = gpio_get_value(udc->vbus_pin);
+	vbus = vbus_is_present(udc);
 	if (vbus != udc->vbus_prev) {
 		if (vbus) {
 			toggle_bias(1);
···
 	udc->vbus_pin = -ENODEV;
 
 	ret = -ENOMEM;
-	udc->regs = ioremap(regs->start, regs->end - regs->start + 1);
+	udc->regs = ioremap(regs->start, resource_size(regs));
 	if (!udc->regs) {
 		dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n");
 		goto err_map_regs;
 	}
 	dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n",
 		 (unsigned long)regs->start, udc->regs);
-	udc->fifo = ioremap(fifo->start, fifo->end - fifo->start + 1);
+	udc->fifo = ioremap(fifo->start, resource_size(fifo));
 	if (!udc->fifo) {
 		dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n");
 		goto err_map_fifo;
···
 	if (gpio_is_valid(pdata->vbus_pin)) {
 		if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
 			udc->vbus_pin = pdata->vbus_pin;
+			udc->vbus_pin_inverted = pdata->vbus_pin_inverted;
 
 			ret = request_irq(gpio_to_irq(udc->vbus_pin),
 					usba_vbus_irq, 0,

drivers/usb/gadget/atmel_usba_udc.h

···
 	struct platform_device *pdev;
 	int irq;
 	int vbus_pin;
+	int vbus_pin_inverted;
 	struct clk *pclk;
 	struct clk *hclk;
 

drivers/usb/gadget/epautoconf.c

···
 				return ep;
 		}
 
-	} else if (gadget_is_sh (gadget) && USB_ENDPOINT_XFER_INT == type) {
-		/* single buffering is enough; maybe 8 byte fifo is too */
-		ep = find_ep (gadget, "ep3in-bulk");
+#ifdef CONFIG_BLACKFIN
+	} else if (gadget_is_musbhsfc(gadget) || gadget_is_musbhdrc(gadget)) {
+		if ((USB_ENDPOINT_XFER_BULK == type) ||
+		    (USB_ENDPOINT_XFER_ISOC == type)) {
+			if (USB_DIR_IN & desc->bEndpointAddress)
+				ep = find_ep (gadget, "ep5in");
+			else
+				ep = find_ep (gadget, "ep6out");
+		} else if (USB_ENDPOINT_XFER_INT == type) {
+			if (USB_DIR_IN & desc->bEndpointAddress)
+				ep = find_ep(gadget, "ep1in");
+			else
+				ep = find_ep(gadget, "ep2out");
+		} else
+			ep = NULL;
 		if (ep && ep_matches (gadget, ep, desc))
 			return ep;
-
-	} else if (gadget_is_mq11xx (gadget) && USB_ENDPOINT_XFER_INT == type) {
-		ep = find_ep (gadget, "ep1-bulk");
-		if (ep && ep_matches (gadget, ep, desc))
-			return ep;
+#endif
 	}
 
 	/* Second, look at endpoints until an unclaimed one looks usable */

drivers/usb/gadget/ether.c

···
 
 /*-------------------------------------------------------------------------*/
 
-#ifdef USB_ETH_EEM
+#ifdef CONFIG_USB_ETH_EEM
 static int use_eem = 1;
 #else
 static int use_eem;

drivers/usb/gadget/f_acm.c

···
 /* Some controllers can't support CDC ACM ... */
 static inline bool can_support_cdc(struct usb_configuration *c)
 {
-	/* SH3 doesn't support multiple interfaces */
-	if (gadget_is_sh(c->cdev->gadget))
-		return false;
-
-	/* sa1100 doesn't have a third interrupt endpoint */
-	if (gadget_is_sa1100(c->cdev->gadget))
-		return false;
-
 	/* everything else is *probably* fine ... */
 	return true;
 }

drivers/usb/gadget/f_ecm.c

···
 			struct net_device	*net;
 
 			/* Enable zlps by default for ECM conformance;
-			 * override for musb_hdrc (avoids txdma ovhead)
-			 * and sa1100 (can't).
+			 * override for musb_hdrc (avoids txdma ovhead).
 			 */
-			ecm->port.is_zlp_ok = !(
-				   gadget_is_sa1100(cdev->gadget)
-				|| gadget_is_musbhdrc(cdev->gadget)
+			ecm->port.is_zlp_ok = !(gadget_is_musbhdrc(cdev->gadget)
 				);
 			ecm->port.cdc_filter = DEFAULT_FILTER;
 			DBG(cdev, "activate ecm\n");

drivers/usb/gadget/f_mass_storage.c

···
 	struct task_struct	*thread_task;
 
 	/* Callback function to call when thread exits. */
-	void			(*thread_exits)(struct fsg_common *common);
+	int			(*thread_exits)(struct fsg_common *common);
 	/* Gadget's private data. */
 	void			*private_data;
 
···
 	const char		*lun_name_format;
 	const char		*thread_name;
 
-	/* Callback function to call when thread exits. */
-	void			(*thread_exits)(struct fsg_common *common);
+	/* Callback function to call when thread exits.  If no
+	 * callback is set or it returns value lower then zero MSF
+	 * will force eject all LUNs it operates on (including those
+	 * marked as non-removable or with prevent_medium_removal flag
+	 * set). */
+	int			(*thread_exits)(struct fsg_common *common);
 	/* Gadget's private data. */
 	void			*private_data;
 
···
 			return -EDOM;
 		VDBG(fsg, "get max LUN\n");
 		*(u8 *) req->buf = fsg->common->nluns - 1;
-		return 1;
+
+		/* Respond with data/status */
+		req->length = min((u16)1, w_length);
+		fsg->common->ep0req_name =
+			ctrl->bRequestType & USB_DIR_IN ? "ep0-in" : "ep0-out";
+		return ep0_queue(fsg->common);
 	}
 
 	VDBG(fsg,
···
 
 	case FSG_STATE_CONFIG_CHANGE:
 		rc = do_set_config(common, new_config);
-		if (common->ep0_req_tag != exception_req_tag)
-			break;
-		if (rc != 0) {			/* STALL on errors */
-			DBG(common, "ep0 set halt\n");
-			usb_ep_set_halt(common->ep0);
-		} else {			/* Complete the status stage */
-			ep0_queue(common);
-		}
 		break;
 
 	case FSG_STATE_EXIT:
···
 	common->thread_task = NULL;
 	spin_unlock_irq(&common->lock);
 
-	if (common->thread_exits)
-		common->thread_exits(common);
+	if (!common->thread_exits || common->thread_exits(common) < 0) {
+		struct fsg_lun *curlun = common->luns;
+		unsigned i = common->nluns;
+
+		down_write(&common->filesem);
+		for (; i--; ++curlun) {
+			if (!fsg_lun_is_open(curlun))
+				continue;
+
+			fsg_lun_close(curlun);
+			curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;
+		}
+		up_write(&common->filesem);
+	}
 
 	/* Let the unbind and cleanup routines know the thread has exited */
 	complete_and_exit(&common->thread_notifier, 0);
···
 	if (cfg->release != 0xffff) {
 		i = cfg->release;
 	} else {
-		/* The sa1100 controller is not supported */
-		i = gadget_is_sa1100(gadget)
-			? -1
-			: usb_gadget_controller_number(gadget);
+		i = usb_gadget_controller_number(gadget);
 		if (i >= 0) {
 			i = 0x0300 + i;
 		} else {
···
 	 * disable stalls.
 	 */
 	common->can_stall = cfg->can_stall &&
-		!(gadget_is_sh(common->gadget) ||
-		  gadget_is_at91(common->gadget));
+		!(gadget_is_at91(common->gadget));
 
 
 	spin_lock_init(&common->lock);
···
 	/* Call fsg_common_release() directly, ref might be not
 	 * initialised */
 	fsg_common_release(&common->ref);
-	complete(&common->thread_notifier);
 	return ERR_PTR(rc);
 }
 

drivers/usb/gadget/f_rndis.c

···
 /* Some controllers can't support RNDIS ... */
 static inline bool can_support_rndis(struct usb_configuration *c)
 {
-	/* only two endpoints on sa1100 */
-	if (gadget_is_sa1100(c->cdev->gadget))
-		return false;
-
 	/* everything else is *presumably* fine */
 	return true;
 }

drivers/usb/gadget/file_storage.c

···
 	 * halt bulk endpoints correctly.  If one of them is present,
 	 * disable stalls.
 	 */
-	if (gadget_is_sh(fsg->gadget) || gadget_is_at91(fsg->gadget))
+	if (gadget_is_at91(fsg->gadget))
 		mod_data.can_stall = 0;
 
 	if (mod_data.release == 0xffff) {	// Parameter wasn't set
-		/* The sa1100 controller is not supported */
-		if (gadget_is_sa1100(fsg->gadget))
-			gcnum = -1;
-		else
-			gcnum = usb_gadget_controller_number(fsg->gadget);
+		gcnum = usb_gadget_controller_number(fsg->gadget);
 		if (gcnum >= 0)
 			mod_data.release = 0x0300 + gcnum;
 		else {

drivers/usb/gadget/fsl_qe_udc.c

···
 }
 
 /*-------------------------------------------------------------------------*/
-static struct of_device_id __devinitdata qe_udc_match[] = {
+static const struct of_device_id qe_udc_match[] __devinitconst = {
 	{
 		.compatible = "fsl,mpc8323-qe-usb",
 		.data = (void *)PORT_QE,

drivers/usb/gadget/gadget_chips.h

···
 #define	gadget_is_goku(g)	0
 #endif
 
-/* SH3 UDC -- not yet ported 2.4 --> 2.6 */
-#ifdef CONFIG_USB_GADGET_SUPERH
-#define	gadget_is_sh(g)		!strcmp("sh_udc", (g)->name)
-#else
-#define	gadget_is_sh(g)		0
-#endif
-
-/* not yet stable on 2.6 (would help "original Zaurus") */
-#ifdef CONFIG_USB_GADGET_SA1100
-#define	gadget_is_sa1100(g)	!strcmp("sa1100_udc", (g)->name)
-#else
-#define	gadget_is_sa1100(g)	0
-#endif
-
 #ifdef CONFIG_USB_GADGET_LH7A40X
 #define	gadget_is_lh7a40x(g)	!strcmp("lh7a40x_udc", (g)->name)
 #else
 #define	gadget_is_lh7a40x(g)	0
 #endif
 
-/* handhelds.org tree (?) */
-#ifdef CONFIG_USB_GADGET_MQ11XX
-#define	gadget_is_mq11xx(g)	!strcmp("mq11xx_udc", (g)->name)
-#else
-#define	gadget_is_mq11xx(g)	0
-#endif
-
 #ifdef CONFIG_USB_GADGET_OMAP
 #define	gadget_is_omap(g)	!strcmp("omap_udc", (g)->name)
 #else
 #define	gadget_is_omap(g)	0
-#endif
-
-/* not yet ported 2.4 --> 2.6 */
-#ifdef CONFIG_USB_GADGET_N9604
-#define	gadget_is_n9604(g)	!strcmp("n9604_udc", (g)->name)
-#else
-#define	gadget_is_n9604(g)	0
 #endif
 
 /* various unstable versions available */
···
 #define gadget_is_fsl_usb2(g)	0
 #endif
 
-/* Mentor high speed function controller */
-/* from Montavista kernel (?) */
-#ifdef CONFIG_USB_GADGET_MUSBHSFC
-#define gadget_is_musbhsfc(g)	!strcmp("musbhsfc_udc", (g)->name)
-#else
-#define gadget_is_musbhsfc(g)	0
-#endif
-
 /* Mentor high speed "dual role" controller, in peripheral role */
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 #define gadget_is_musbhdrc(g)	!strcmp("musb_hdrc", (g)->name)
···
 #define gadget_is_langwell(g)	(!strcmp("langwell_udc", (g)->name))
 #else
 #define gadget_is_langwell(g)	0
-#endif
-
-/* from Montavista kernel (?) */
-#ifdef CONFIG_USB_GADGET_MPC8272
-#define gadget_is_mpc8272(g)	!strcmp("mpc8272_udc", (g)->name)
-#else
-#define gadget_is_mpc8272(g)	0
 #endif
 
 #ifdef CONFIG_USB_GADGET_M66592
···
 		return 0x02;
 	else if (gadget_is_pxa(gadget))
 		return 0x03;
-	else if (gadget_is_sh(gadget))
-		return 0x04;
-	else if (gadget_is_sa1100(gadget))
-		return 0x05;
 	else if (gadget_is_goku(gadget))
 		return 0x06;
-	else if (gadget_is_mq11xx(gadget))
-		return 0x07;
 	else if (gadget_is_omap(gadget))
 		return 0x08;
 	else if (gadget_is_lh7a40x(gadget))
 		return 0x09;
-	else if (gadget_is_n9604(gadget))
-		return 0x10;
 	else if (gadget_is_pxa27x(gadget))
 		return 0x11;
 	else if (gadget_is_s3c2410(gadget))
···
 		return 0x13;
 	else if (gadget_is_imx(gadget))
 		return 0x14;
-	else if (gadget_is_musbhsfc(gadget))
-		return 0x15;
 	else if (gadget_is_musbhdrc(gadget))
 		return 0x16;
-	else if (gadget_is_mpc8272(gadget))
-		return 0x17;
 	else if (gadget_is_atmel_usba(gadget))
 		return 0x18;
 	else if (gadget_is_fsl_usb2(gadget))
···
 
 	/* PXA 27x and 3xx have *broken* altsetting support */
 	if (gadget_is_pxa27x(gadget))
-		return false;
-
-	/* SH3 hardware just doesn't do altsettings */
-	if (gadget_is_sh(gadget))
 		return false;
 
 	/* Everything else is *presumably* fine ... */

drivers/usb/gadget/gmidi.c

···
 	}
 #endif
 
-	if (gadget_is_sa1100(gadget) && dev->config) {
-		/* tx fifo is full, but we can't clear it...*/
-		ERROR(dev, "can't change configurations\n");
-		return -ESPIPE;
-	}
 	gmidi_reset_config(dev);
 
 	switch (number) {

drivers/usb/gadget/goku_udc.c

···
 
 /*-------------------------------------------------------------------------*/
 
-static struct pci_device_id pci_ids [] = { {
+static const struct pci_device_id pci_ids[] = { {
 	.class =	((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
 	.class_mask =	~0,
 	.vendor =	0x102f,		/* Toshiba */

drivers/usb/gadget/inode.c

···
 };
 
 struct ep_data {
-	struct semaphore		lock;
+	struct mutex			lock;
 	enum ep_state			state;
 	atomic_t			count;
 	struct dev_data			*dev;
···
 	int	val;
 
 	if (f_flags & O_NONBLOCK) {
-		if (down_trylock (&epdata->lock) != 0)
+		if (!mutex_trylock(&epdata->lock))
 			goto nonblock;
 		if (epdata->state != STATE_EP_ENABLED) {
-			up (&epdata->lock);
+			mutex_unlock(&epdata->lock);
 nonblock:
 			val = -EAGAIN;
 		} else
···
 		return val;
 	}
 
-	if ((val = down_interruptible (&epdata->lock)) < 0)
+	val = mutex_lock_interruptible(&epdata->lock);
+	if (val < 0)
 		return val;
 
 	switch (epdata->state) {
···
 		// FALLTHROUGH
 	case STATE_EP_UNBOUND:			/* clean disconnect */
 		val = -ENODEV;
-		up (&epdata->lock);
+		mutex_unlock(&epdata->lock);
 	}
 	return val;
 }
···
 		if (likely (data->ep != NULL))
 			usb_ep_set_halt (data->ep);
 		spin_unlock_irq (&data->dev->lock);
-		up (&data->lock);
+		mutex_unlock(&data->lock);
 		return -EBADMSG;
 	}
 
···
 		value = -EFAULT;
 
 free1:
-	up (&data->lock);
+	mutex_unlock(&data->lock);
 	kfree (kbuf);
 	return value;
 }
···
 		if (likely (data->ep != NULL))
 			usb_ep_set_halt (data->ep);
 		spin_unlock_irq (&data->dev->lock);
-		up (&data->lock);
+		mutex_unlock(&data->lock);
 		return -EBADMSG;
 	}
 
···
 	VDEBUG (data->dev, "%s write %zu IN, status %d\n",
 		data->name, len, (int) value);
 free1:
-	up (&data->lock);
+	mutex_unlock(&data->lock);
 	kfree (kbuf);
 	return value;
 }
···
 	struct ep_data		*data = fd->private_data;
 	int value;
 
-	if ((value = down_interruptible(&data->lock)) < 0)
+	value = mutex_lock_interruptible(&data->lock);
+	if (value < 0)
 		return value;
 
 	/* clean up if this can be reopened */
···
 		data->hs_desc.bDescriptorType = 0;
 		usb_ep_disable(data->ep);
 	}
-	up (&data->lock);
+	mutex_unlock(&data->lock);
 	put_ep (data);
 	return 0;
 }
···
 	} else
 		status = -ENODEV;
 	spin_unlock_irq (&data->dev->lock);
-	up (&data->lock);
+	mutex_unlock(&data->lock);
 	return status;
 }
 
···
 		value = -ENODEV;
 	spin_unlock_irq(&epdata->dev->lock);
 
-	up(&epdata->lock);
+	mutex_unlock(&epdata->lock);
 
 	if (unlikely(value)) {
 		kfree(priv);
···
 	u32			tag;
 	int			value, length = len;
 
-	if ((value = down_interruptible (&data->lock)) < 0)
+	value = mutex_lock_interruptible(&data->lock);
+	if (value < 0)
 		return value;
 
 	if (data->state != STATE_EP_READY) {
···
 		data->desc.bDescriptorType = 0;
 		data->hs_desc.bDescriptorType = 0;
 	}
-	up (&data->lock);
+	mutex_unlock(&data->lock);
 	return value;
 fail0:
 	value = -EINVAL;
···
 	struct ep_data		*data = inode->i_private;
 	int			value = -EBUSY;
 
-	if (down_interruptible (&data->lock) != 0)
+	if (mutex_lock_interruptible(&data->lock) != 0)
 		return -EINTR;
 	spin_lock_irq (&data->dev->lock);
 	if (data->dev->state == STATE_DEV_UNBOUND)
···
 		DBG (data->dev, "%s state %d\n",
 			data->name, data->state);
 	spin_unlock_irq (&data->dev->lock);
-	up (&data->lock);
+	mutex_unlock(&data->lock);
 	return value;
 }
 
···
 		if (!data)
 			goto enomem0;
 		data->state = STATE_EP_DISABLED;
-		init_MUTEX (&data->lock);
+		mutex_init(&data->lock);
 		init_waitqueue_head (&data->wait);
 
 		strncpy (data->name, ep->name, sizeof (data->name) - 1);

drivers/usb/gadget/mass_storage.c

···
 static unsigned long msg_registered = 0;
 static void msg_cleanup(void);
 
+static int msg_thread_exits(struct fsg_common *common)
+{
+	msg_cleanup();
+	return 0;
+}
+
 static int __init msg_do_config(struct usb_configuration *c)
 {
 	struct fsg_common *common;
···
 	}
 
 	fsg_config_from_params(&config, &mod_data);
-	config.thread_exits = (void(*)(struct fsg_common*))&msg_cleanup;
+	config.thread_exits = msg_thread_exits;
 	common = fsg_common_init(0, c->cdev, &config);
 	if (IS_ERR(common))
 		return PTR_ERR(common);

drivers/usb/gadget/nokia.c

···
+/*
+ * nokia.c -- Nokia Composite Gadget Driver
+ *
+ * Copyright (C) 2008-2010 Nokia Corporation
+ * Contact: Felipe Balbi <[e-mail]>
+ *
+ * This gadget driver borrows from serial.c which is:
+ *
+ * Copyright (C) 2003 Al Borchers ([e-mail])
+ * Copyright (C) 2008 by David Brownell
+ * Copyright (C) 2008 by Nokia Corporation
+ *
+ * This software is distributed under the terms of the GNU General
+ * Public License ("GPL") as published by the Free Software Foundation,
+ * version 2 of that License.
+ */
+
+#include <linux/kernel.h>
+#include <linux/utsname.h>
+#include <linux/device.h>
+
+#include "u_serial.h"
+#include "u_ether.h"
+#include "u_phonet.h"
+#include "gadget_chips.h"
+
+/* Defines */
+
+#define NOKIA_VERSION_NUM		0x0211
+#define NOKIA_LONG_NAME			"N900 (PC-Suite Mode)"
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+#include "composite.c"
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+#include "u_serial.c"
+#include "f_acm.c"
+#include "f_ecm.c"
+#include "f_obex.c"
+#include "f_serial.c"
+#include "f_phonet.c"
+#include "u_ether.c"
+
+/*-------------------------------------------------------------------------*/
+
+#define NOKIA_VENDOR_ID			0x0421	/* Nokia */
+#define NOKIA_PRODUCT_ID		0x01c8	/* Nokia Gadget */
+
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX		0
+#define STRING_PRODUCT_IDX		1
+#define STRING_DESCRIPTION_IDX		2
+
+static char manufacturer_nokia[] = "Nokia";
+static const char product_nokia[] = NOKIA_LONG_NAME;
+static const char description_nokia[] = "PC-Suite Configuration";
+
+static struct usb_string strings_dev[] = {
+	[STRING_MANUFACTURER_IDX].s = manufacturer_nokia,
+	[STRING_PRODUCT_IDX].s = NOKIA_LONG_NAME,
+	[STRING_DESCRIPTION_IDX].s = description_nokia,
+	{  } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+	.language	= 0x0409,	/* en-us */
+	.strings	= strings_dev,
+};
+
+static struct usb_gadget_strings *dev_strings[] = {
+	&stringtab_dev,
+	NULL,
+};
+
+static struct usb_device_descriptor device_desc = {
+	.bLength		= USB_DT_DEVICE_SIZE,
+	.bDescriptorType	= USB_DT_DEVICE,
+	.bcdUSB			= __constant_cpu_to_le16(0x0200),
+	.bDeviceClass		= USB_CLASS_COMM,
+	.idVendor		= __constant_cpu_to_le16(NOKIA_VENDOR_ID),
+	.idProduct		= __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
+	/* .iManufacturer = DYNAMIC */
+	/* .iProduct = DYNAMIC */
+	.bNumConfigurations =	1,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Module */
+MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
+MODULE_AUTHOR("Felipe Balbi");
+MODULE_LICENSE("GPL");
+
+/*-------------------------------------------------------------------------*/
+
+static u8 hostaddr[ETH_ALEN];
+
+static int __init nokia_bind_config(struct usb_configuration *c)
+{
+	int status = 0;
+
+	status = phonet_bind_config(c);
+	if (status)
+		printk(KERN_DEBUG "could not bind phonet config\n");
+
+	status = obex_bind_config(c, 0);
+	if (status)
+		printk(KERN_DEBUG "could not bind obex config %d\n", 0);
+
+	status = obex_bind_config(c, 1);
+	if (status)
+		printk(KERN_DEBUG "could not bind obex config %d\n", 0);
+
+	status = acm_bind_config(c, 2);
+	if (status)
+		printk(KERN_DEBUG "could not bind acm config\n");
+
+	status = ecm_bind_config(c, hostaddr);
+	if (status)
+		printk(KERN_DEBUG "could not bind ecm config\n");
+
+	return status;
+}
+
+static struct usb_configuration nokia_config_500ma_driver = {
+	.label		= "Bus Powered",
+	.bind		= nokia_bind_config,
+	.bConfigurationValue = 1,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes	= USB_CONFIG_ATT_ONE,
+	.bMaxPower	= 250, /* 500mA */
+};
+
+static struct usb_configuration nokia_config_100ma_driver = {
+	.label		= "Self Powered",
+	.bind		= nokia_bind_config,
+	.bConfigurationValue = 2,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes	= USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+	.bMaxPower	= 50, /* 100 mA */
+};
+
+static int __init nokia_bind(struct usb_composite_dev *cdev)
+{
+	int			gcnum;
+	struct usb_gadget	*gadget = cdev->gadget;
+	int			status;
+
+	status = gphonet_setup(cdev->gadget);
+	if (status < 0)
+		goto err_phonet;
+
+	status = gserial_setup(cdev->gadget, 3);
+	if (status < 0)
+		goto err_serial;
+
+	status = gether_setup(cdev->gadget, hostaddr);
+	if (status < 0)
+		goto err_ether;
+
+	status = usb_string_id(cdev);
+	if (status < 0)
+		goto err_usb;
+	strings_dev[STRING_MANUFACTURER_IDX].id = status;
+
+	device_desc.iManufacturer = status;
+
+	status = usb_string_id(cdev);
+	if (status < 0)
+		goto err_usb;
+	strings_dev[STRING_PRODUCT_IDX].id = status;
+
+	device_desc.iProduct = status;
+
+	/* config description */
+	status = usb_string_id(cdev);
+	if (status < 0)
+		goto err_usb;
+	strings_dev[STRING_DESCRIPTION_IDX].id = status;
+
+	nokia_config_500ma_driver.iConfiguration = status;
+	nokia_config_100ma_driver.iConfiguration = status;
+
+	/* set up other descriptors */
+	gcnum = usb_gadget_controller_number(gadget);
+	if (gcnum >= 0)
+		device_desc.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM);
+	else {
+		/* this should only work with hw that supports altsettings
+		 * and several endpoints, anything else, panic.
+		 */
+		pr_err("nokia_bind: controller '%s' not recognized\n",
+			gadget->name);
+		goto err_usb;
+	}
+
+	/* finaly register the configuration */
+	status = usb_add_config(cdev, &nokia_config_500ma_driver);
+	if (status < 0)
+		goto err_usb;
+
+	status = usb_add_config(cdev, &nokia_config_100ma_driver);
+	if (status < 0)
+		goto err_usb;
+
+	dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
+
+	return 0;
+
+err_usb:
+	gether_cleanup();
+err_ether:
+	gserial_cleanup();
+err_serial:
+	gphonet_cleanup();
+err_phonet:
+	return status;
+}
+
+static int __exit nokia_unbind(struct usb_composite_dev *cdev)
+{
+	gphonet_cleanup();
+	gserial_cleanup();
+	gether_cleanup();
+
+	return 0;
+}
+
+static struct usb_composite_driver nokia_driver = {
+	.name		= "g_nokia",
+	.dev		= &device_desc,
+	.strings	= dev_strings,
+	.bind		= nokia_bind,
+	.unbind		= __exit_p(nokia_unbind),
+};
+
+static int __init nokia_init(void)
+{
+	return usb_composite_register(&nokia_driver);
+}
+module_init(nokia_init);
+
+static void __exit nokia_cleanup(void)
+{
+	usb_composite_unregister(&nokia_driver);
+}
+module_exit(nokia_cleanup);
+

drivers/usb/gadget/printer.c

···
 	int			result = 0;
 	struct usb_gadget	*gadget = dev->gadget;
 
-	if (gadget_is_sa1100(gadget) && dev->config) {
-		/* tx fifo is full, but we can't clear it...*/
-		INFO(dev, "can't change configurations\n");
-		return -ESPIPE;
-	}
-
 	switch (number) {
 	case DEV_CONFIG_VALUE:
 		result = 0;
···
 set_interface(struct printer_dev *dev, unsigned number)
 {
 	int			result = 0;
-
-	if (gadget_is_sa1100(dev->gadget) && dev->interface < 0) {
-		/* tx fifo is full, but we can't clear it...*/
-		INFO(dev, "can't change interfaces\n");
-		return -ESPIPE;
-	}
 
 	/* Free the current interface */
 	switch (dev->interface) {
···
 	status = cdev_add(&dev->printer_cdev, g_printer_devno, 1);
 	if (status) {
 		ERROR(dev, "Failed to open char device\n");
-		goto fail;
-	}
-
-	if (gadget_is_sa1100(gadget)) {
-		/* hardware can't write zero length packets. */
-		ERROR(dev, "SA1100 controller is unsupport by this driver\n");
 		goto fail;
 	}
 

drivers/usb/gadget/pxa27x_udc.c

···
  * @ep: pxa physical endpoint
  * @req: pxa request
  * @status: usb request status sent to gadget API
+ * @pflags: flags of previous spinlock_irq_save() or NULL if no lock held
  *
- * Context: ep->lock held
+ * Context: ep->lock held if flags not NULL, else ep->lock released
  *
  * Retire a pxa27x usb request. Endpoint must be locked.
  */
-static void req_done(struct pxa_ep *ep, struct pxa27x_request *req, int status)
+static void req_done(struct pxa_ep *ep, struct pxa27x_request *req, int status,
+	unsigned long *pflags)
 {
+	unsigned long	flags;
+
 	ep_del_request(ep, req);
 	if (likely(req->req.status == -EINPROGRESS))
 		req->req.status = status;
···
 			&req->req, status,
 			req->req.actual, req->req.length);
 
+	if (pflags)
+		spin_unlock_irqrestore(&ep->lock, *pflags);
+	local_irq_save(flags);
 	req->req.complete(&req->udc_usb_ep->usb_ep, &req->req);
+	local_irq_restore(flags);
+	if (pflags)
+		spin_lock_irqsave(&ep->lock, *pflags);
 }
 
 /**
  * ep_end_out_req - Ends endpoint OUT request
  * @ep: physical endpoint
  * @req: pxa request
+ * @pflags: flags of previous spinlock_irq_save() or NULL if no lock held
  *
- * Context: ep->lock held
+ * Context: ep->lock held or released (see req_done())
  *
  * Ends endpoint OUT request (completes usb request).
  */
-static void ep_end_out_req(struct pxa_ep *ep, struct pxa27x_request *req)
+static void ep_end_out_req(struct pxa_ep *ep, struct pxa27x_request *req,
+	unsigned long *pflags)
 {
 	inc_ep_stats_reqs(ep, !USB_DIR_IN);
-	req_done(ep, req, 0);
+	req_done(ep, req, 0, pflags);
 }
 
 /**
  * ep0_end_out_req - Ends control endpoint OUT request (ends data stage)
  * @ep: physical endpoint
  * @req: pxa request
+ * @pflags: flags of previous spinlock_irq_save() or NULL if no lock held
  *
- * Context: ep->lock held
+ * Context: ep->lock held or released (see req_done())
  *
  * Ends control endpoint OUT request (completes usb request), and puts
  * control endpoint into idle state
  */
-static void ep0_end_out_req(struct pxa_ep *ep, struct pxa27x_request *req)
+static void ep0_end_out_req(struct pxa_ep *ep, struct pxa27x_request *req,
+	unsigned long *pflags)
 {
 	set_ep0state(ep->dev, OUT_STATUS_STAGE);
-	ep_end_out_req(ep, req);
+	ep_end_out_req(ep, req, pflags);
 	ep0_idle(ep->dev);
 }
 
···
  * ep_end_in_req - Ends endpoint IN request
  * @ep: physical endpoint
  * @req: pxa request
+ * @pflags: flags of previous spinlock_irq_save() or NULL if no lock held
  *
- * Context: ep->lock held
+ * Context: ep->lock held or released (see req_done())
  *
  * Ends endpoint IN request (completes usb request).
  */
-static void ep_end_in_req(struct pxa_ep *ep, struct pxa27x_request *req)
+static void ep_end_in_req(struct pxa_ep *ep, struct pxa27x_request *req,
+	unsigned long *pflags)
 {
 	inc_ep_stats_reqs(ep, USB_DIR_IN);
-	req_done(ep, req, 0);
+	req_done(ep, req, 0, pflags);
 }
 
 /**
  * ep0_end_in_req - Ends control endpoint IN request (ends data stage)
  * @ep: physical endpoint
  * @req: pxa request
+ * @pflags: flags of previous spinlock_irq_save() or NULL if no lock held
  *
- * Context: ep->lock held
+ * Context: ep->lock held or released (see req_done())
  *
  * Ends control endpoint IN request (completes usb request), and puts
  * control endpoint into status state
  */
-static void ep0_end_in_req(struct pxa_ep *ep, struct pxa27x_request *req)
+static void ep0_end_in_req(struct pxa_ep *ep, struct pxa27x_request *req,
+	unsigned long *pflags)
 {
 	set_ep0state(ep->dev, IN_STATUS_STAGE);
-	ep_end_in_req(ep, req);
+	ep_end_in_req(ep, req, pflags);
 }
 
 /**
···
  * @ep: pxa endpoint
  * @status: usb request status
  *
- * Context: ep->lock held
+ * Context: ep->lock released
  *
  * Dequeues all requests on an endpoint. As a side effect, interrupts will be
  * disabled on that endpoint (because no more requests).
  */
 static void nuke(struct pxa_ep *ep, int status)
 {
-	struct pxa27x_request *req;
+	struct pxa27x_request	*req;
+	unsigned long		flags;
 
+	spin_lock_irqsave(&ep->lock, flags);
 	while (!list_empty(&ep->queue)) {
 		req = list_entry(ep->queue.next, struct pxa27x_request, queue);
-		req_done(ep, req, status);
+		req_done(ep, req, status, &flags);
 	}
+	spin_unlock_irqrestore(&ep->lock, flags);
 }
 
 /**
···
 	int			rc = 0;
 	int			is_first_req;
 	unsigned		length;
+	int			recursion_detected;
 
 	req = container_of(_req, struct pxa27x_request, req);
 	udc_usb_ep = container_of(_ep, struct udc_usb_ep, usb_ep);
···
 		return -EMSGSIZE;
 
 	spin_lock_irqsave(&ep->lock, flags);
+	recursion_detected = ep->in_handle_ep;
 
 	is_first_req = list_empty(&ep->queue);
 	ep_dbg(ep, "queue req %p(first=%s), len %d buf %p\n",
···
 	if (!ep->enabled) {
 		_req->status = -ESHUTDOWN;
 		rc = -ESHUTDOWN;
-		goto out;
+		goto out_locked;
 	}
 
 	if (req->in_use) {
 		ep_err(ep, "refusing to queue req %p (already queued)\n", req);
-		goto out;
+		goto out_locked;
 	}
 
 	length = _req->length;
···
 	_req->actual = 0;
 
 	ep_add_request(ep, req);
+	spin_unlock_irqrestore(&ep->lock, flags);
 
 	if (is_ep0(ep)) {
 		switch (dev->ep0state) {
 		case WAIT_ACK_SET_CONF_INTERF:
 			if (length == 0) {
-				ep_end_in_req(ep, req);
+				ep_end_in_req(ep, req, NULL);
 			} else {
 				ep_err(ep, "got a request of %d bytes while"
 					"in state WAIT_ACK_SET_CONF_INTERF\n",
···
 		case IN_DATA_STAGE:
 			if (!ep_is_full(ep))
 				if (write_ep0_fifo(ep, req))
-					ep0_end_in_req(ep, req);
+					ep0_end_in_req(ep, req, NULL);
 			break;
 		case OUT_DATA_STAGE:
 			if ((length == 0) || !epout_has_pkt(ep))
 				if (read_ep0_fifo(ep, req))
-					ep0_end_out_req(ep, req);
+					ep0_end_out_req(ep, req, NULL);
 			break;
 		default:
 			ep_err(ep, "odd state %s to send me a request\n",
···
 			break;
 		}
 	} else {
-		handle_ep(ep);
+		if (!recursion_detected)
+			handle_ep(ep);
 	}
 
 out:
-	spin_unlock_irqrestore(&ep->lock, flags);
 	return rc;
+out_locked:
+	spin_unlock_irqrestore(&ep->lock, flags);
+	goto out;
 }
 
 /**
···
 	/* make sure it's actually queued on this endpoint */
 	list_for_each_entry(req, &ep->queue, queue) {
 		if (&req->req == _req) {
-			req_done(ep, req, -ECONNRESET);
 			rc = 0;
 			break;
 		}
 	}
 
 	spin_unlock_irqrestore(&ep->lock, flags);
+	if (!rc)
+		req_done(ep, req, -ECONNRESET, NULL);
 	return rc;
 }
 
···
 {
 	struct pxa_ep		*ep;
 	struct udc_usb_ep	*udc_usb_ep;
-	unsigned long		flags;
 
 	if (!_ep)
 		return -EINVAL;
···
 	if (!ep || is_ep0(ep) || !list_empty(&ep->queue))
 		return -EINVAL;
 
-	spin_lock_irqsave(&ep->lock, flags);
 	ep->enabled = 0;
 	nuke(ep, -ESHUTDOWN);
-	spin_unlock_irqrestore(&ep->lock, flags);
 
 	pxa_ep_fifo_flush(_ep);
 	udc_usb_ep->pxa_ep = NULL;
···
 	} u;
 	int i;
 	int have_extrabytes = 0;
+	unsigned long flags;
 
 	nuke(ep, -EPROTO);
+	spin_lock_irqsave(&ep->lock, flags);
 
 	/*
 	 * In the PXA320 manual, in the section about Back-to-Back setup
···
 	/* Tell UDC to enter Data Stage */
 	ep_write_UDCCSR(ep, UDCCSR0_SA | UDCCSR0_OPC);
 
+	spin_unlock_irqrestore(&ep->lock, flags);
 	i = udc->driver->setup(&udc->gadget, &u.r);
+	spin_lock_irqsave(&ep->lock, flags);
 	if (i < 0)
 		goto stall;
 out:
+	spin_unlock_irqrestore(&ep->lock, flags);
 	return;
 stall:
 	ep_dbg(ep, "protocol STALL, udccsr0=%03x err %d\n",
···
 		if (req && !ep_is_full(ep))
 			completed = write_ep0_fifo(ep, req);
 		if (completed)
-			ep0_end_in_req(ep, req);
+			ep0_end_in_req(ep, req, NULL);
 		break;
 	case OUT_DATA_STAGE:			/* SET_DESCRIPTOR */
 		if (epout_has_pkt(ep) && req)
 			completed = read_ep0_fifo(ep, req);
 		if (completed)
-			ep0_end_out_req(ep, req);
+			ep0_end_out_req(ep, req, NULL);
 		break;
 	case STALL:
 		ep_write_UDCCSR(ep, UDCCSR0_FST);
···
  * Tries to transfer all pending request data into the endpoint and/or
  * transfer all pending data in the endpoint into usb requests.
  *
- * Is always called when in_interrupt() or with ep->lock held.
+ * Is always called when in_interrupt() and with ep->lock released.
  */
 static void handle_ep(struct pxa_ep *ep)
 {
···
 	u32 udccsr;
 	int is_in = ep->dir_in;
 	int loop = 0;
+	unsigned long		flags;
+
+	spin_lock_irqsave(&ep->lock, flags);
+	if (ep->in_handle_ep)
+		goto recursion_detected;
+	ep->in_handle_ep = 1;
 
 	do {
 		completed = 0;
 		udccsr = udc_ep_readl(ep, UDCCSR);
+
 		if (likely(!list_empty(&ep->queue)))
 			req = list_entry(ep->queue.next,
 					struct pxa27x_request, queue);
···
 		if (unlikely(is_in)) {
 			if (likely(!ep_is_full(ep)))
 				completed = write_fifo(ep, req);
-			if (completed)
-				ep_end_in_req(ep, req);
 		} else {
 			if (likely(epout_has_pkt(ep)))
 				completed = read_fifo(ep, req);
-			if (completed)
-				ep_end_out_req(ep, req);
+		}
+
+		if (completed) {
+			if (is_in)
+				ep_end_in_req(ep, req, &flags);
+			else
+				ep_end_out_req(ep, req, &flags);
 		}
 	} while (completed);
+
+	ep->in_handle_ep = 0;
+recursion_detected:
+	spin_unlock_irqrestore(&ep->lock, flags);
 }
 
 /**
···
 			continue;
 
 		udc_writel(udc, UDCISR0, UDCISR_INT(i, UDCISR_INT_MASK));
-		ep = &udc->pxa_ep[i];
-		ep->stats.irqs++;
-		handle_ep(ep);
+
+		WARN_ON(i >= ARRAY_SIZE(udc->pxa_ep));
+		if (i < ARRAY_SIZE(udc->pxa_ep)) {
+			ep = &udc->pxa_ep[i];
+			ep->stats.irqs++;
+			handle_ep(ep);
+		}
 	}
 
 	for (i = 16; udcisr1 != 0 && i < 24; udcisr1 >>= 2, i++) {
···
 		if (!(udcisr1 & UDCISR_INT_MASK))
 			continue;
 
-		ep = &udc->pxa_ep[i];
-		ep->stats.irqs++;
-		handle_ep(ep);
+		WARN_ON(i >= ARRAY_SIZE(udc->pxa_ep));
+		if (i < ARRAY_SIZE(udc->pxa_ep)) {
+			ep = &udc->pxa_ep[i];
+			ep->stats.irqs++;
+			handle_ep(ep);
+		}
 	}
 
 }
···
 	}
 
 	retval = -ENOMEM;
-	udc->regs = ioremap(regs->start, regs->end - regs->start + 1);
+	udc->regs = ioremap(regs->start, resource_size(regs));
 	if (!udc->regs) {
 		dev_err(&pdev->dev, "Unable to map UDC I/O memory\n");
 		goto err_map;

drivers/usb/gadget/pxa27x_udc.h

···
  * @queue: requests queue
  * @lock: lock to pxa_ep data (queues and stats)
  * @enabled: true when endpoint enabled (not stopped by gadget layer)
+ * @in_handle_ep: number of recursions of handle_ep() function
+ * 	Prevents deadlocks or infinite recursions of types :
+ *	  irq->handle_ep()->req_done()->req.complete()->pxa_ep_queue()->handle_ep()
+ *      or
+ *        pxa_ep_queue()->handle_ep()->req_done()->req.complete()->pxa_ep_queue()
  * @idx: endpoint index (1 => epA, 2 => epB, ..., 24 => epX)
  * @name: endpoint name (for trace/debug purpose)
  * @dir_in: 1 if IN endpoint, 0 if OUT endpoint
···
 	spinlock_t		lock;		/* Protects this structure */
 						/* (queues, stats) */
 	unsigned		enabled:1;
+	unsigned		in_handle_ep:1;
 
 	unsigned		idx:5;
 	char			*name;

drivers/usb/gadget/s3c-hsotg.c

···
  *
  * Allocate a new USB request structure appropriate for the specified endpoint
  */
-struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, gfp_t flags)
+static struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep,
+						      gfp_t flags)
 {
 	struct s3c_hsotg_req *req;
 
···
 		req->dma = DMA_ADDR_INVALID;
 		hs_req->mapped = 0;
 	} else {
-		dma_sync_single(hsotg->dev, req->dma, req->length, dir);
+		dma_sync_single_for_cpu(hsotg->dev, req->dma, req->length, dir);
 	}
 }
 
···
 		hs_req->mapped = 1;
 		req->dma = dma;
 	} else {
-		dma_sync_single(hsotg->dev, req->dma, req->length, dir);
+		dma_sync_single_for_cpu(hsotg->dev, req->dma, req->length, dir);
 		hs_req->mapped = 0;
 	}
 
···
  * as the actual data should be sent to the memory directly and we turn
  * on the completion interrupts to get notifications of transfer completion.
  */
-void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg)
 {
 	u32 grxstsr = readl(hsotg->regs + S3C_GRXSTSP);
 	u32 epnum, status, size;
···
 	local_irq_restore(flags);
 }
 
-struct s3c_hsotg_plat s3c_hsotg_default_pdata;
+static struct s3c_hsotg_plat s3c_hsotg_default_pdata;
 
 static int __devinit s3c_hsotg_probe(struct platform_device *pdev)
 {

drivers/usb/gadget/u_ether.c

···
 	.ndo_validate_addr	= eth_validate_addr,
 };
 
+static struct device_type gadget_type = {
+	.name	= "gadget",
+};
+
 /**
  * gether_setup - initialize one ethernet-over-usb link
  * @g: gadget to associated with these links
···
 
 	dev->gadget = g;
 	SET_NETDEV_DEV(net, &g->dev);
+	SET_NETDEV_DEVTYPE(net, &gadget_type);
 
 	status = register_netdev(net);
 	if (status < 0) {

drivers/usb/gadget/u_ether.h

···
 	if (!gadget_supports_altsettings(gadget))
 		return false;
 
-	/* SA1100 can do ECM, *without* status endpoint ... but we'll
-	 * only use it in non-ECM mode for backwards compatibility
-	 * (and since we currently require a status endpoint)
-	 */
-	if (gadget_is_sa1100(gadget))
-		return false;
-
 	/* Everything else is *presumably* fine ... but this is a bit
 	 * chancy, so be **CERTAIN** there are no hardware issues with
 	 * your controller.  Add it above if it can't handle CDC.

drivers/usb/gadget/zero.c

···
 	 */
 	if (loopdefault) {
 		loopback_add(cdev, autoresume != 0);
-		if (!gadget_is_sh(gadget))
-			sourcesink_add(cdev, autoresume != 0);
+		sourcesink_add(cdev, autoresume != 0);
 	} else {
 		sourcesink_add(cdev, autoresume != 0);
-		if (!gadget_is_sh(gadget))
-			loopback_add(cdev, autoresume != 0);
+		loopback_add(cdev, autoresume != 0);
 	}
 
 	gcnum = usb_gadget_controller_number(gadget);

drivers/usb/host/Kconfig

···
 
 	  To compile this driver a module, choose M here: the module
 	  will be called "hwa-hc".
+
+config USB_IMX21_HCD
+       tristate "iMX21 HCD support"
+       depends on USB && ARM && MACH_MX21
+       help
+         This driver enables support for the on-chip USB host in the
+         iMX21 processor.
+
+         To compile this driver as a module, choose M here: the
+         module will be called "imx21-hcd".
+

drivers/usb/host/Makefile

···
 obj-$(CONFIG_USB_R8A66597_HCD)	+= r8a66597-hcd.o
 obj-$(CONFIG_USB_ISP1760_HCD)	+= isp1760.o
 obj-$(CONFIG_USB_HWA_HCD)	+= hwa-hc.o
+obj-$(CONFIG_USB_IMX21_HCD)	+= imx21-hcd.o
+

drivers/usb/host/ehci-atmel.c

···
 		goto fail_request_resource;
 	}
 	hcd->rsrc_start = res->start;
-	hcd->rsrc_len = res->end - res->start + 1;
+	hcd->rsrc_len = resource_size(res);
 
 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
 				driver->description)) {

drivers/usb/host/ehci-au1xxx.c

···
 {
 	struct usb_hcd *hcd;
 	struct ehci_hcd *ehci;
+	struct resource *res;
 	int ret;
 
 	if (usb_disabled())
···
 	if (!hcd)
 		return -ENOMEM;
 
-	hcd->rsrc_start = pdev->resource[0].start;
-	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	hcd->rsrc_start = res->start;
+	hcd->rsrc_len = resource_size(res);
 
 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 		pr_debug("request_mem_region failed");

drivers/usb/host/ehci-fsl.c

···
 /*
- * Copyright (c) 2005 MontaVista Software
+ * Copyright 2005-2009 MontaVista Software, Inc.
+ * Copyright 2008      Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
···
  *
  * Ported to 834x by Randy Vinson <[e-mail]> using code provided
  * by Hunter Wu.
+ * Power Management support by Dave Liu <[e-mail]>,
+ * Jerry Huang <[e-mail]> and
+ * Anton Vorontsov <[e-mail]>.
  */
 
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
 #include <linux/platform_device.h>
 #include <linux/fsl_devices.h>
 
 #include "ehci-fsl.h"
-
-/* FIXME: Power Management is un-ported so temporarily disable it */
-#undef CONFIG_PM
-
 
 /* configure so an HC device and id are always provided */
 /* always called with process context; sleeping is OK */
···
  * Allocates basic resources for this USB host controller.
  *
  */
-int usb_hcd_fsl_probe(const struct hc_driver *driver,
-		      struct platform_device *pdev)
+static int usb_hcd_fsl_probe(const struct hc_driver *driver,
+			     struct platform_device *pdev)
 {
 	struct fsl_usb2_platform_data *pdata;
 	struct usb_hcd *hcd;
···
  * Reverses the effect of usb_hcd_fsl_probe().
  *
  */
-void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
+			       struct platform_device *pdev)
 {
 	usb_remove_hcd(hcd);
 	iounmap(hcd->regs);
···
 	return retval;
 }
 
+struct ehci_fsl {
+	struct ehci_hcd	ehci;
+
+#ifdef CONFIG_PM
+	/* Saved USB PHY settings, need to restore after deep sleep. */
+	u32 usb_ctrl;
+#endif
+};
+
+#ifdef CONFIG_PM
+
+static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
+{
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+	return container_of(ehci, struct ehci_fsl, ehci);
+}
+
+static int ehci_fsl_drv_suspend(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+	void __iomem *non_ehci = hcd->regs;
+
+	if (!fsl_deep_sleep())
+		return 0;
+
+	ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
+	return 0;
+}
+
+static int ehci_fsl_drv_resume(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	void __iomem *non_ehci = hcd->regs;
+
+	if (!fsl_deep_sleep())
+		return 0;
+
+	usb_root_hub_lost_power(hcd->self.root_hub);
+
+	/* Restore USB PHY settings and enable the controller. */
+	out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
+
+	ehci_reset(ehci);
+	ehci_fsl_reinit(ehci);
+
+	return 0;
+}
+
+static int ehci_fsl_drv_restore(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	usb_root_hub_lost_power(hcd->self.root_hub);
+	return 0;
+}
+
+static struct dev_pm_ops ehci_fsl_pm_ops = {
+	.suspend = ehci_fsl_drv_suspend,
+	.resume = ehci_fsl_drv_resume,
+	.restore = ehci_fsl_drv_restore,
+};
+
+#define EHCI_FSL_PM_OPS		(&ehci_fsl_pm_ops)
+#else
+#define EHCI_FSL_PM_OPS		NULL
+#endif /* CONFIG_PM */
+
 static const struct hc_driver ehci_fsl_hc_driver = {
 	.description = hcd_name,
 	.product_desc = "Freescale On-Chip EHCI Host Controller",
-	.hcd_priv_size = sizeof(struct ehci_hcd),
+	.hcd_priv_size = sizeof(struct ehci_fsl),
 
 	/*
 	 * generic hardware linkage
···
 	.remove = ehci_fsl_drv_remove,
 	.shutdown = usb_hcd_platform_shutdown,
 	.driver = {
-		   .name = "fsl-ehci",
+		.name = "fsl-ehci",
+		.pm = EHCI_FSL_PM_OPS,
 	},
 };

drivers/usb/host/ehci-mxc.c

···
 		goto err_ioremap;
 	}
 
+	/* call platform specific init function */
+	if (pdata->init) {
+		ret = pdata->init(pdev);
+		if (ret) {
+			dev_err(dev, "platform init failed\n");
+			goto err_init;
+		}
+		/* platforms need some time to settle changed IO settings */
+		mdelay(10);
+	}
+
 	/* enable clocks */
 	priv->usbclk = clk_get(dev, "usb");
 	if (IS_ERR(priv->usbclk)) {
···
 	ret = mxc_set_usbcontrol(pdev->id, pdata->flags);
 	if (ret < 0)
 		goto err_init;
-
-	/* call platform specific init function */
-	if (pdata->init) {
-		ret = pdata->init(pdev);
-		if (ret) {
-			dev_err(dev, "platform init failed\n");
-			goto err_init;
-		}
-	}
-
-	/* most platforms need some time to settle changed IO settings */
-	mdelay(10);
 
 	/* Initialize the transceiver */
 	if (pdata->otg) {

drivers/usb/host/ehci-omap.c

···
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  *
- * TODO (last updated Feb 23rd, 2009):
+ * TODO (last updated Feb 12, 2010):
  *	- add kernel-doc
  *	- enable AUTOIDLE
- *	- move DPLL5 programming to clock fw
  *	- add suspend/resume
  *	- move workarounds to board-files
  */
···
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
 #include <plat/usb.h>
 
 /*
···
 	void __iomem		*uhh_base;
 	void __iomem		*tll_base;
 	void __iomem		*ehci_base;
+
+	/* Regulators for USB PHYs.
+	 * Each PHY can have a seperate regulator.
+	 */
+	struct regulator        *regulator[OMAP3_HS_USB_PORTS];
 };
 
 /*-------------------------------------------------------------------------*/
···
 
 	int irq = platform_get_irq(pdev, 0);
 	int ret = -ENODEV;
+	int i;
+	char supply[7];
 
 	if (!pdata) {
 		dev_dbg(&pdev->dev, "missing platform_data\n");
···
 		goto err_tll_ioremap;
 	}
 
+	/* get ehci regulator and enable */
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (omap->port_mode[i] != EHCI_HCD_OMAP_MODE_PHY) {
+			omap->regulator[i] = NULL;
+			continue;
+		}
+		snprintf(supply, sizeof(supply), "hsusb%d", i);
+		omap->regulator[i] = regulator_get(omap->dev, supply);
+		if (IS_ERR(omap->regulator[i]))
+			dev_dbg(&pdev->dev,
+			"failed to get ehci port%d regulator\n", i);
+		else
+			regulator_enable(omap->regulator[i]);
+	}
+
 	ret = omap_start_ehc(omap, hcd);
 	if (ret) {
 		dev_dbg(&pdev->dev, "failed to start ehci\n");
···
 	omap->ehci->regs = hcd->regs
 		+ HC_LENGTH(readl(&omap->ehci->caps->hc_capbase));
 
+	dbg_hcs_params(omap->ehci, "reset");
+	dbg_hcc_params(omap->ehci, "reset");
+
 	/* cache this readonly data; minimize chip reads */
 	omap->ehci->hcs_params = readl(&omap->ehci->caps->hcs_params);
-
-	/* SET 1 micro-frame Interrupt interval */
-	writel(readl(&omap->ehci->regs->command) | (1 << 16),
-			&omap->ehci->regs->command);
 
 	ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
 	if (ret) {
···
 	omap_stop_ehc(omap, hcd);
 
 err_start:
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (omap->regulator[i]) {
+			regulator_disable(omap->regulator[i]);
+			regulator_put(omap->regulator[i]);
+		}
+	}
 	iounmap(omap->tll_base);
 
 err_tll_ioremap:
···
 {
 	struct ehci_hcd_omap *omap = platform_get_drvdata(pdev);
 	struct usb_hcd *hcd = ehci_to_hcd(omap->ehci);
+	int i;
 
 	usb_remove_hcd(hcd);
 	omap_stop_ehc(omap, hcd);
 	iounmap(hcd->regs);
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (omap->regulator[i]) {
+			regulator_disable(omap->regulator[i]);
+			regulator_put(omap->regulator[i]);
+		}
+	}
 	iounmap(omap->tll_base);
 	iounmap(omap->uhh_base);
 	usb_put_hcd(hcd);
+	kfree(omap);
 
 	return 0;
 }

drivers/usb/host/ehci-orion.c

···
 		goto err1;
 	}
 
-	if (!request_mem_region(res->start, res->end - res->start + 1,
+	if (!request_mem_region(res->start, resource_size(res),
 				ehci_orion_hc_driver.description)) {
 		dev_dbg(&pdev->dev, "controller already in use\n");
 		err = -EBUSY;
 		goto err1;
 	}
 
-	regs = ioremap(res->start, res->end - res->start + 1);
+	regs = ioremap(res->start, resource_size(res));
 	if (regs == NULL) {
 		dev_dbg(&pdev->dev, "error mapping memory\n");
 		err = -EFAULT;
···
 	}
 
 	hcd->rsrc_start = res->start;
-	hcd->rsrc_len = res->end - res->start + 1;
+	hcd->rsrc_len = resource_size(res);
 	hcd->regs = regs;
 
 	ehci = hcd_to_ehci(hcd);
···
 err3:
 	iounmap(regs);
 err2:
-	release_mem_region(res->start, res->end - res->start + 1);
+	release_mem_region(res->start, resource_size(res));
 err1:
 	dev_err(&pdev->dev, "init %s fail, %d\n",
 		dev_name(&pdev->dev), err);

drivers/usb/host/ehci-ppc-of.c

···
 	hcd->rsrc_len = res.end - res.start + 1;
 
 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-		printk(KERN_ERR __FILE__ ": request_mem_region failed\n");
+		printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_rmr;
 	}
 
 	irq = irq_of_parse_and_map(dn, 0);
 	if (irq == NO_IRQ) {
-		printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+		printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_irq;
 	}
 
 	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 	if (!hcd->regs) {
-		printk(KERN_ERR __FILE__ ": ioremap failed\n");
+		printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
 		rv = -ENOMEM;
 		goto err_ioremap;
 	}
···
 			ehci->ohci_hcctrl_reg = ioremap(res.start +
 					OHCI_HCCTRL_OFFSET, OHCI_HCCTRL_LEN);
 		else
-			pr_debug(__FILE__ ": no ohci offset in fdt\n");
+			pr_debug("%s: no ohci offset in fdt\n", __FILE__);
 		if (!ehci->ohci_hcctrl_reg) {
-			pr_debug(__FILE__ ": ioremap for ohci hcctrl failed\n");
+			pr_debug("%s: ioremap for ohci hcctrl failed\n", __FILE__);
 		} else {
 			ehci->has_amcc_usb23 = 1;
 		}
···
 				else
 					release_mem_region(res.start, 0x4);
 			else
-				pr_debug(__FILE__ ": no ohci offset in fdt\n");
+				pr_debug("%s: no ohci offset in fdt\n", __FILE__);
 			of_node_put(np);
 		}
 
···
 }
 
 
-static struct of_device_id ehci_hcd_ppc_of_match[] = {
+static const struct of_device_id ehci_hcd_ppc_of_match[] = {
 	{
 		.compatible = "usb-ehci",
 	},

drivers/usb/host/ehci-sched.c

···
 	ehci_writel(ehci, cmd, &ehci->regs->command);
 	/* posted write ... */
 
+	free_cached_itd_list(ehci);
+
 	ehci->next_uframe = -1;
 	return 0;
 }
···
 				 * No need to check for activity unless the
 				 * frame is current.
 				 */
-				if (frame == clock_frame && live &&
-						(q.sitd->hw_results &
-							SITD_ACTIVE(ehci))) {
+				if (((frame == clock_frame) ||
+				     (((frame + 1) % ehci->periodic_size)
+				      == clock_frame))
+				    && live
+				    && (q.sitd->hw_results &
+					SITD_ACTIVE(ehci))) {
+
 					incomplete = true;
 					q_p = &q.sitd->sitd_next;
 					hw_p = &q.sitd->hw_next;

drivers/usb/host/ehci-xilinx-of.c

···
 	hcd->rsrc_len = res.end - res.start + 1;
 
 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-		printk(KERN_ERR __FILE__ ": request_mem_region failed\n");
+		printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_rmr;
 	}
 
 	irq = irq_of_parse_and_map(dn, 0);
 	if (irq == NO_IRQ) {
-		printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+		printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_irq;
 	}
 
 	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 	if (!hcd->regs) {
-		printk(KERN_ERR __FILE__ ": ioremap failed\n");
+		printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
 		rv = -ENOMEM;
 		goto err_ioremap;
 	}
···
 }
 
 
-static struct of_device_id ehci_hcd_xilinx_of_match[] = {
+static const struct of_device_id ehci_hcd_xilinx_of_match[] = {
 		{.compatible = "xlnx,xps-usb-host-1.00.a",},
 	{},
 };

drivers/usb/host/fhci-hcd.c

···
 		return -ENOMEM;
 
 	/* allocate the private part of the URB */
-	urb_priv->tds = kzalloc(size * sizeof(struct td), mem_flags);
+	urb_priv->tds = kcalloc(size, sizeof(*urb_priv->tds), mem_flags);
 	if (!urb_priv->tds) {
 		kfree(urb_priv);
 		return -ENOMEM;
···
 	return fhci_remove(&ofdev->dev);
 }
 
-static struct of_device_id of_fhci_match[] = {
+static const struct of_device_id of_fhci_match[] = {
 	{ .compatible = "fsl,mpc8323-qe-usb", },
 	{},
 };

drivers/usb/host/imx21-dbg.c

···
+/*
+ * Copyright (c) 2009 by Martin Fuzzey
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* this file is part of imx21-hcd.c */
+
+#ifndef DEBUG
+
+static inline void create_debug_files(struct imx21 *imx21) { }
+static inline void remove_debug_files(struct imx21 *imx21) { }
+static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {}
+static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb,
+	int status) {}
+static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {}
+static inline void debug_urb_queued_for_etd(struct imx21 *imx21,
+	struct urb *urb) {}
+static inline void debug_urb_queued_for_dmem(struct imx21 *imx21,
+	struct urb *urb) {}
+static inline void debug_etd_allocated(struct imx21 *imx21) {}
+static inline void debug_etd_freed(struct imx21 *imx21) {}
+static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {}
+static inline void debug_dmem_freed(struct imx21 *imx21, int size) {}
+static inline void debug_isoc_submitted(struct imx21 *imx21,
+	int frame, struct td *td) {}
+static inline void debug_isoc_completed(struct imx21 *imx21,
+	int frame, struct td *td, int cc, int len) {}
+
+#else
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static const char *dir_labels[] = {
+	"TD 0",
+	"OUT",
+	"IN",
+	"TD 1"
+};
+
+static const char *speed_labels[] = {
+	"Full",
+	"Low"
+};
+
+static const char *format_labels[] = {
+	"Control",
+	"ISO",
+	"Bulk",
+	"Interrupt"
+};
+
+static inline struct debug_stats *stats_for_urb(struct imx21 *imx21,
+	struct urb *urb)
+{
+	return usb_pipeisoc(urb->pipe) ?
+		&imx21->isoc_stats : &imx21->nonisoc_stats;
+}
+
+static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb)
+{
+	stats_for_urb(imx21, urb)->submitted++;
+}
+
+static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st)
+{
+	if (st)
+		stats_for_urb(imx21, urb)->completed_failed++;
+	else
+		stats_for_urb(imx21, urb)->completed_ok++;
+}
+
+static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb)
+{
+	stats_for_urb(imx21, urb)->unlinked++;
+}
+
+static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb)
+{
+	stats_for_urb(imx21, urb)->queue_etd++;
+}
+
+static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb)
+{
+	stats_for_urb(imx21, urb)->queue_dmem++;
+}
+
+static inline void debug_etd_allocated(struct imx21 *imx21)
+{
+	imx21->etd_usage.maximum = max(
+			++(imx21->etd_usage.value),
+			imx21->etd_usage.maximum);
+}
+
+static inline void debug_etd_freed(struct imx21 *imx21)
+{
+	imx21->etd_usage.value--;
+}
+
+static inline void debug_dmem_allocated(struct imx21 *imx21, int size)
+{
+	imx21->dmem_usage.value += size;
+	imx21->dmem_usage.maximum = max(
+			imx21->dmem_usage.value,
+			imx21->dmem_usage.maximum);
+}
+
+static inline void debug_dmem_freed(struct imx21 *imx21, int size)
+{
+	imx21->dmem_usage.value -= size;
+}
+
+
+static void debug_isoc_submitted(struct imx21 *imx21,
+	int frame, struct td *td)
+{
+	struct debug_isoc_trace *trace = &imx21->isoc_trace[
+		imx21->isoc_trace_index++];
+
+	imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace);
+	trace->schedule_frame = td->frame;
+	trace->submit_frame = frame;
+	trace->request_len = td->len;
+	trace->td = td;
+}
+
+static inline void debug_isoc_completed(struct imx21 *imx21,
+	int frame, struct td *td, int cc, int len)
+{
+	struct debug_isoc_trace *trace, *trace_failed;
+	int i;
+	int found = 0;
+
+	trace = imx21->isoc_trace;
+	for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) {
+		if (trace->td == td) {
+			trace->done_frame = frame;
+			trace->done_len = len;
+			trace->cc = cc;
+			trace->td = NULL;
+			found = 1;
+			break;
+		}
+	}
+
+	if (found && cc) {
+		trace_failed = &imx21->isoc_trace_failed[
+					imx21->isoc_trace_index_failed++];
+
+		imx21->isoc_trace_index_failed %= ARRAY_SIZE(
+						imx21->isoc_trace_failed);
+		*trace_failed = *trace;
+	}
+}
+
+
+static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize)
+{
+	if (ep)
+		snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)",
+			ep->desc.bEndpointAddress,
+			usb_endpoint_type(&ep->desc),
+			ep);
+	else
+		snprintf(buf, bufsize, "none");
+	return buf;
+}
+
+static char *format_etd_dword0(u32 value, char *buf, int bufsize)
+{
+	snprintf(buf, bufsize,
+		"addr=%d ep=%d dir=%s speed=%s format=%s halted=%d",
+		value & 0x7F,
+		(value >> DW0_ENDPNT) & 0x0F,
+		dir_labels[(value >> DW0_DIRECT) & 0x03],
+		speed_labels[(value >> DW0_SPEED) & 0x01],
+		format_labels[(value >> DW0_FORMAT) & 0x03],
+		(value >> DW0_HALTED) & 0x01);
+	return buf;
+}
+
+static int debug_status_show(struct seq_file *s, void *v)
+{
+	struct imx21 *imx21 = s->private;
+	int etds_allocated = 0;
+	int etds_sw_busy = 0;
+	int etds_hw_busy = 0;
+	int dmem_blocks = 0;
+	int queued_for_etd = 0;
+	int queued_for_dmem = 0;
+	unsigned int dmem_bytes = 0;
+	int i;
+	struct etd_priv *etd;
+	u32 etd_enable_mask;
+	unsigned long flags;
+	struct imx21_dmem_area *dmem;
+	struct ep_priv *ep_priv;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	etd_enable_mask = readl(imx21->regs + USBH_ETDENSET);
+	for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
+		if (etd->alloc)
+			etds_allocated++;
+		if (etd->urb)
+			etds_sw_busy++;
+		if (etd_enable_mask & (1<<i))
+			etds_hw_busy++;
+	}
+
+	list_for_each_entry(dmem, &imx21->dmem_list, list) {
+		dmem_bytes += dmem->size;
+		dmem_blocks++;
+	}
+
+	list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue)
+		queued_for_etd++;
+
+	list_for_each_entry(etd, &imx21->queue_for_dmem, queue)
+		queued_for_dmem++;
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	seq_printf(s,
+		"Frame: %d\n"
+		"ETDs allocated: %d/%d (max=%d)\n"
+		"ETDs in use sw: %d\n"
+		"ETDs in use hw: %d\n"
+		"DMEM alocated: %d/%d (max=%d)\n"
+		"DMEM blocks: %d\n"
+		"Queued waiting for ETD: %d\n"
+		"Queued waiting for DMEM: %d\n",
+		readl(imx21->regs + USBH_FRMNUB) & 0xFFFF,
+		etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum,
+		etds_sw_busy,
+		etds_hw_busy,
+		dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum,
+		dmem_blocks,
+		queued_for_etd,
+		queued_for_dmem);
+
+	return 0;
+}
+
+static int debug_dmem_show(struct seq_file *s, void *v)
+{
+	struct imx21 *imx21 = s->private;
+	struct imx21_dmem_area *dmem;
+	unsigned long flags;
+	char ep_text[40];
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	list_for_each_entry(dmem, &imx21->dmem_list, list)
+		seq_printf(s,
+			"%04X: size=0x%X "
+			"ep=%s\n",
+			dmem->offset, dmem->size,
+			format_ep(dmem->ep, ep_text, sizeof(ep_text)));
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	return 0;
+}
+
+static int debug_etd_show(struct seq_file *s, void *v)
+{
+	struct imx21 *imx21 = s->private;
+	struct etd_priv *etd;
+	char buf[60];
+	u32 dword;
+	int i, j;
+	unsigned long flags;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
+		int state = -1;
+		struct urb_priv *urb_priv;
+		if (etd->urb) {
+			urb_priv = etd->urb->hcpriv;
+			if (urb_priv)
+				state = urb_priv->state;
+		}
+
+		seq_printf(s,
+			"etd_num: %d\n"
+			"ep: %s\n"
+			"alloc: %d\n"
+			"len: %d\n"
+			"busy sw: %d\n"
+			"busy hw: %d\n"
+			"urb state: %d\n"
+			"current urb: %p\n",
+
+			i,
+			format_ep(etd->ep, buf, sizeof(buf)),
+			etd->alloc,
+			etd->len,
+			etd->urb != NULL,
+			(readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0,
+			state,
+			etd->urb);
+
+		for (j = 0; j < 4; j++) {
+			dword = etd_readl(imx21, i, j);
+			switch (j) {
+			case 0:
+				format_etd_dword0(dword, buf, sizeof(buf));
+				break;
+			case 2:
+				snprintf(buf, sizeof(buf),
+					"cc=0X%02X", dword >> DW2_COMPCODE);
+				break;
+			default:
+				*buf = 0;
+				break;
+			}
+			seq_printf(s,
+				"dword %d: submitted=%08X cur=%08X [%s]\n",
+				j,
+				etd->submitted_dwords[j],
+				dword,
+				buf);
+		}
+		seq_printf(s, "\n");
+	}
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	return 0;
+}
+
+static void debug_statistics_show_one(struct seq_file *s,
+	const char *name, struct debug_stats *stats)
+{
+	seq_printf(s, "%s:\n"
+		"submitted URBs: %lu\n"
+		"completed OK: %lu\n"
+		"completed failed: %lu\n"
+		"unlinked: %lu\n"
+		"queued for ETD: %lu\n"
+		"queued for DMEM: %lu\n\n",
+		name,
+		stats->submitted,
+		stats->completed_ok,
+		stats->completed_failed,
+		stats->unlinked,
+		stats->queue_etd,
+		stats->queue_dmem);
+}
+
+static int debug_statistics_show(struct seq_file *s, void *v)
+{
+	struct imx21 *imx21 = s->private;
+	unsigned long flags;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats);
+	debug_statistics_show_one(s, "isoc", &imx21->isoc_stats);
+	seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks);
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	return 0;
+}
+
+static void debug_isoc_show_one(struct seq_file *s,
+	const char *name, int index, 	struct debug_isoc_trace *trace)
+{
+	seq_printf(s, "%s %d:\n"
+		"cc=0X%02X\n"
+		"scheduled frame %d (%d)\n"
+		"submittted frame %d (%d)\n"
+		"completed frame %d (%d)\n"
+		"requested length=%d\n"
+		"completed length=%d\n\n",
+		name, index,
+		trace->cc,
+		trace->schedule_frame, trace->schedule_frame & 0xFFFF,
+		trace->submit_frame, trace->submit_frame & 0xFFFF,
+		trace->done_frame, trace->done_frame & 0xFFFF,
+		trace->request_len,
+		trace->done_len);
+}
+
+static int debug_isoc_show(struct seq_file *s, void *v)
+{
+	struct imx21 *imx21 = s->private;
+	struct debug_isoc_trace *trace;
+	unsigned long flags;
+	int i;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	trace = imx21->isoc_trace_failed;
+	for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++)
+		debug_isoc_show_one(s, "isoc failed", i, trace);
+
+	trace = imx21->isoc_trace;
+	for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++)
+		debug_isoc_show_one(s, "isoc", i, trace);
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	return 0;
+}
+
+static int debug_status_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debug_status_show, inode->i_private);
+}
+
+static int debug_dmem_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debug_dmem_show, inode->i_private);
+}
+
+static int debug_etd_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debug_etd_show, inode->i_private);
+}
+
+static int debug_statistics_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debug_statistics_show, inode->i_private);
+}
+
+static int debug_isoc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debug_isoc_show, inode->i_private);
+}
+
+static const struct file_operations debug_status_fops = {
+	.open = debug_status_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static const struct file_operations debug_dmem_fops = {
+	.open = debug_dmem_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static const struct file_operations debug_etd_fops = {
+	.open = debug_etd_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static const struct file_operations debug_statistics_fops = {
+	.open = debug_statistics_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static const struct file_operations debug_isoc_fops = {
+	.open = debug_isoc_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static void create_debug_files(struct imx21 *imx21)
+{
+	imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL);
+	if (!imx21->debug_root)
+		goto failed_create_rootdir;
+
+	if (!debugfs_create_file("status", S_IRUGO,
+			imx21->debug_root, imx21, &debug_status_fops))
+		goto failed_create;
+
+	if (!debugfs_create_file("dmem", S_IRUGO,
+			imx21->debug_root, imx21, &debug_dmem_fops))
+		goto failed_create;
+
+	if (!debugfs_create_file("etd", S_IRUGO,
+			imx21->debug_root, imx21, &debug_etd_fops))
+		goto failed_create;
+
+	if (!debugfs_create_file("statistics", S_IRUGO,
+			imx21->debug_root, imx21, &debug_statistics_fops))
+		goto failed_create;
+
+	if (!debugfs_create_file("isoc", S_IRUGO,
+			imx21->debug_root, imx21, &debug_isoc_fops))
+		goto failed_create;
+
+	return;
+
+failed_create:
+	debugfs_remove_recursive(imx21->debug_root);
+
+failed_create_rootdir:
+	imx21->debug_root = NULL;
+}
+
+
+static void remove_debug_files(struct imx21 *imx21)
+{
+	if (imx21->debug_root) {
+		debugfs_remove_recursive(imx21->debug_root);
+		imx21->debug_root = NULL;
+	}
+}
+
+#endif
+

drivers/usb/host/imx21-hcd.c

···
+/*
+ * USB Host Controller Driver for IMX21
+ *
+ * Copyright (C) 2006 Loping Dog Embedded Systems
+ * Copyright (C) 2009 Martin Fuzzey
+ * Originally written by Jay Monkman <[e-mail]>
+ * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+ /*
+  * The i.MX21 USB hardware contains
+  *    * 32 transfer descriptors (called ETDs)
+  *    * 4Kb of Data memory
+  *
+  * The data memory is shared between the host and fuction controlers
+  * (but this driver only supports the host controler)
+  *
+  * So setting up a transfer involves:
+  *    * Allocating a ETD
+  *    * Fill in ETD with appropriate information
+  *    * Allocating data memory (and putting the offset in the ETD)
+  *    * Activate the ETD
+  *    * Get interrupt when done.
+  *
+  * An ETD is assigned to each active endpoint.
+  *
+  * Low resource (ETD and Data memory) situations are handled differently for
+  * isochronous and non insosynchronous transactions :
+  *
+  * Non ISOC transfers are queued if either ETDs or Data memory are unavailable
+  *
+  * ISOC transfers use 2 ETDs per endpoint to achieve double buffering.
+  * They allocate both ETDs and Data memory during URB submission
+  * (and fail if unavailable).
+  */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+
+#include "../core/hcd.h"
+#include "imx21-hcd.h"
+
+#ifdef DEBUG
+#define DEBUG_LOG_FRAME(imx21, etd, event) \
+	(etd)->event##_frame = readl((imx21)->regs + USBH_FRMNUB)
+#else
+#define DEBUG_LOG_FRAME(imx21, etd, event) do { } while (0)
+#endif
+
+static const char hcd_name[] = "imx21-hcd";
+
+static inline struct imx21 *hcd_to_imx21(struct usb_hcd *hcd)
+{
+	return (struct imx21 *)hcd->hcd_priv;
+}
+
+
+/* =========================================== */
+/* Hardware access helpers			*/
+/* =========================================== */
+
+static inline void set_register_bits(struct imx21 *imx21, u32 offset, u32 mask)
+{
+	void __iomem *reg = imx21->regs + offset;
+	writel(readl(reg) | mask, reg);
+}
+
+static inline void clear_register_bits(struct imx21 *imx21,
+	u32 offset, u32 mask)
+{
+	void __iomem *reg = imx21->regs + offset;
+	writel(readl(reg) & ~mask, reg);
+}
+
+static inline void clear_toggle_bit(struct imx21 *imx21, u32 offset, u32 mask)
+{
+	void __iomem *reg = imx21->regs + offset;
+
+	if (readl(reg) & mask)
+		writel(mask, reg);
+}
+
+static inline void set_toggle_bit(struct imx21 *imx21, u32 offset, u32 mask)
+{
+	void __iomem *reg = imx21->regs + offset;
+
+	if (!(readl(reg) & mask))
+		writel(mask, reg);
+}
+
+static void etd_writel(struct imx21 *imx21, int etd_num, int dword, u32 value)
+{
+	writel(value, imx21->regs + USB_ETD_DWORD(etd_num, dword));
+}
+
+static u32 etd_readl(struct imx21 *imx21, int etd_num, int dword)
+{
+	return readl(imx21->regs + USB_ETD_DWORD(etd_num, dword));
+}
+
+static inline int wrap_frame(int counter)
+{
+	return counter & 0xFFFF;
+}
+
+static inline int frame_after(int frame, int after)
+{
+	/* handle wrapping like jiffies time_afer */
+	return (s16)((s16)after - (s16)frame) < 0;
+}
+
+static int imx21_hc_get_frame(struct usb_hcd *hcd)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+
+	return wrap_frame(readl(imx21->regs + USBH_FRMNUB));
+}
+
+
+#include "imx21-dbg.c"
+
+/* =========================================== */
+/* ETD management				*/
+/* ===========================================	*/
+
+static int alloc_etd(struct imx21 *imx21)
+{
+	int i;
+	struct etd_priv *etd = imx21->etd;
+
+	for (i = 0; i < USB_NUM_ETD; i++, etd++) {
+		if (etd->alloc == 0) {
+			memset(etd, 0, sizeof(imx21->etd[0]));
+			etd->alloc = 1;
+			debug_etd_allocated(imx21);
+			return i;
+		}
+	}
+	return -1;
+}
+
+static void disactivate_etd(struct imx21 *imx21, int num)
+{
+	int etd_mask = (1 << num);
+	struct etd_priv *etd = &imx21->etd[num];
+
+	writel(etd_mask, imx21->regs + USBH_ETDENCLR);
+	clear_register_bits(imx21, USBH_ETDDONEEN, etd_mask);
+	writel(etd_mask, imx21->regs + USB_ETDDMACHANLCLR);
+	clear_toggle_bit(imx21, USBH_ETDDONESTAT, etd_mask);
+
+	etd->active_count = 0;
+
+	DEBUG_LOG_FRAME(imx21, etd, disactivated);
+}
+
+static void reset_etd(struct imx21 *imx21, int num)
+{
+	struct etd_priv *etd = imx21->etd + num;
+	int i;
+
+	disactivate_etd(imx21, num);
+
+	for (i = 0; i < 4; i++)
+		etd_writel(imx21, num, i, 0);
+	etd->urb = NULL;
+	etd->ep = NULL;
+	etd->td = NULL;;
+}
+
+static void free_etd(struct imx21 *imx21, int num)
+{
+	if (num < 0)
+		return;
+
+	if (num >= USB_NUM_ETD) {
+		dev_err(imx21->dev, "BAD etd=%d!\n", num);
+		return;
+	}
+	if (imx21->etd[num].alloc == 0) {
+		dev_err(imx21->dev, "ETD %d already free!\n", num);
+		return;
+	}
+
+	debug_etd_freed(imx21);
+	reset_etd(imx21, num);
+	memset(&imx21->etd[num], 0, sizeof(imx21->etd[0]));
+}
+
+
+static void setup_etd_dword0(struct imx21 *imx21,
+	int etd_num, struct urb *urb,  u8 dir, u16 maxpacket)
+{
+	etd_writel(imx21, etd_num, 0,
+		((u32) usb_pipedevice(urb->pipe)) <<  DW0_ADDRESS |
+		((u32) usb_pipeendpoint(urb->pipe) << DW0_ENDPNT) |
+		((u32) dir << DW0_DIRECT) |
+		((u32) ((urb->dev->speed == USB_SPEED_LOW) ?
+			1 : 0) << DW0_SPEED) |
+		((u32) fmt_urb_to_etd[usb_pipetype(urb->pipe)] << DW0_FORMAT) |
+		((u32) maxpacket << DW0_MAXPKTSIZ));
+}
+
+static void activate_etd(struct imx21 *imx21,
+	int etd_num, dma_addr_t dma, u8 dir)
+{
+	u32 etd_mask = 1 << etd_num;
+	struct etd_priv *etd = &imx21->etd[etd_num];
+
+	clear_toggle_bit(imx21, USBH_ETDDONESTAT, etd_mask);
+	set_register_bits(imx21, USBH_ETDDONEEN, etd_mask);
+	clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+	clear_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
+
+	if (dma) {
+		set_register_bits(imx21, USB_ETDDMACHANLCLR, etd_mask);
+		clear_toggle_bit(imx21, USBH_XBUFSTAT, etd_mask);
+		clear_toggle_bit(imx21, USBH_YBUFSTAT, etd_mask);
+		writel(dma, imx21->regs + USB_ETDSMSA(etd_num));
+		set_register_bits(imx21, USB_ETDDMAEN, etd_mask);
+	} else {
+		if (dir != TD_DIR_IN) {
+			/* need to set for ZLP */
+			set_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+			set_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
+		}
+	}
+
+	DEBUG_LOG_FRAME(imx21, etd, activated);
+
+#ifdef DEBUG
+	if (!etd->active_count) {
+		int i;
+		etd->activated_frame = readl(imx21->regs + USBH_FRMNUB);
+		etd->disactivated_frame = -1;
+		etd->last_int_frame = -1;
+		etd->last_req_frame = -1;
+
+		for (i = 0; i < 4; i++)
+			etd->submitted_dwords[i] = etd_readl(imx21, etd_num, i);
+	}
+#endif
+
+	etd->active_count = 1;
+	writel(etd_mask, imx21->regs + USBH_ETDENSET);
+}
+
+/* ===========================================	*/
+/* Data memory management			*/
+/* ===========================================	*/
+
+static int alloc_dmem(struct imx21 *imx21, unsigned int size,
+		      struct usb_host_endpoint *ep)
+{
+	unsigned int offset = 0;
+	struct imx21_dmem_area *area;
+	struct imx21_dmem_area *tmp;
+
+	size += (~size + 1) & 0x3; /* Round to 4 byte multiple */
+
+	if (size > DMEM_SIZE) {
+		dev_err(imx21->dev, "size=%d > DMEM_SIZE(%d)\n",
+			size, DMEM_SIZE);
+		return -EINVAL;
+	}
+
+	list_for_each_entry(tmp, &imx21->dmem_list, list) {
+		if ((size + offset) < offset)
+			goto fail;
+		if ((size + offset) <= tmp->offset)
+			break;
+		offset = tmp->size + tmp->offset;
+		if ((offset + size) > DMEM_SIZE)
+			goto fail;
+	}
+
+	area = kmalloc(sizeof(struct imx21_dmem_area), GFP_ATOMIC);
+	if (area == NULL)
+		return -ENOMEM;
+
+	area->ep = ep;
+	area->offset = offset;
+	area->size = size;
+	list_add_tail(&area->list, &tmp->list);
+	debug_dmem_allocated(imx21, size);
+	return offset;
+
+fail:
+	return -ENOMEM;
+}
+
+/* Memory now available for a queued ETD - activate it */
+static void activate_queued_etd(struct imx21 *imx21,
+	struct etd_priv *etd, u32 dmem_offset)
+{
+	struct urb_priv *urb_priv = etd->urb->hcpriv;
+	int etd_num = etd - &imx21->etd[0];
+	u32 maxpacket = etd_readl(imx21, etd_num, 1) >> DW1_YBUFSRTAD;
+	u8 dir = (etd_readl(imx21, etd_num, 2) >> DW2_DIRPID) & 0x03;
+
+	dev_dbg(imx21->dev, "activating queued ETD %d now DMEM available\n",
+		etd_num);
+	etd_writel(imx21, etd_num, 1,
+	    ((dmem_offset + maxpacket) << DW1_YBUFSRTAD) | dmem_offset);
+
+	urb_priv->active = 1;
+	activate_etd(imx21, etd_num, etd->dma_handle, dir);
+}
+
+static void free_dmem(struct imx21 *imx21, int offset)
+{
+	struct imx21_dmem_area *area;
+	struct etd_priv *etd, *tmp;
+	int found = 0;
+
+	list_for_each_entry(area, &imx21->dmem_list, list) {
+		if (area->offset == offset) {
+			debug_dmem_freed(imx21, area->size);
+			list_del(&area->list);
+			kfree(area);
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found)  {
+		dev_err(imx21->dev,
+			"Trying to free unallocated DMEM %d\n", offset);
+		return;
+	}
+
+	/* Try again to allocate memory for anything we've queued */
+	list_for_each_entry_safe(etd, tmp, &imx21->queue_for_dmem, queue) {
+		offset = alloc_dmem(imx21, etd->dmem_size, etd->ep);
+		if (offset >= 0) {
+			list_del(&etd->queue);
+			activate_queued_etd(imx21, etd, (u32)offset);
+		}
+	}
+}
+
+static void free_epdmem(struct imx21 *imx21, struct usb_host_endpoint *ep)
+{
+	struct imx21_dmem_area *area, *tmp;
+
+	list_for_each_entry_safe(area, tmp, &imx21->dmem_list, list) {
+		if (area->ep == ep) {
+			dev_err(imx21->dev,
+				"Active DMEM %d for disabled ep=%p\n",
+				area->offset, ep);
+			list_del(&area->list);
+			kfree(area);
+		}
+	}
+}
+
+
+/* ===========================================	*/
+/* End handling 				*/
+/* ===========================================	*/
+static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb);
+
+/* Endpoint now idle - release it's ETD(s) or asssign to queued request */
+static void ep_idle(struct imx21 *imx21, struct ep_priv *ep_priv)
+{
+	int etd_num;
+	int i;
+
+	for (i = 0; i < NUM_ISO_ETDS; i++) {
+		etd_num = ep_priv->etd[i];
+		if (etd_num < 0)
+			continue;
+
+		ep_priv->etd[i] = -1;
+		if (list_empty(&imx21->queue_for_etd)) {
+			free_etd(imx21, etd_num);
+			continue;
+		}
+
+		dev_dbg(imx21->dev,
+			"assigning idle etd %d for queued request\n", etd_num);
+		ep_priv = list_first_entry(&imx21->queue_for_etd,
+			struct ep_priv, queue);
+		list_del(&ep_priv->queue);
+		reset_etd(imx21, etd_num);
+		ep_priv->waiting_etd = 0;
+		ep_priv->etd[i] = etd_num;
+
+		if (list_empty(&ep_priv->ep->urb_list)) {
+			dev_err(imx21->dev, "No urb for queued ep!\n");
+			continue;
+		}
+		schedule_nonisoc_etd(imx21, list_first_entry(
+			&ep_priv->ep->urb_list, struct urb, urb_list));
+	}
+}
+
+static void urb_done(struct usb_hcd *hcd, struct urb *urb, int status)
+__releases(imx21->lock)
+__acquires(imx21->lock)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	struct ep_priv *ep_priv = urb->ep->hcpriv;
+	struct urb_priv *urb_priv = urb->hcpriv;
+
+	debug_urb_completed(imx21, urb, status);
+	dev_vdbg(imx21->dev, "urb %p done %d\n", urb, status);
+
+	kfree(urb_priv->isoc_td);
+	kfree(urb->hcpriv);
+	urb->hcpriv = NULL;
+	usb_hcd_unlink_urb_from_ep(hcd, urb);
+	spin_unlock(&imx21->lock);
+	usb_hcd_giveback_urb(hcd, urb, status);
+	spin_lock(&imx21->lock);
+	if (list_empty(&ep_priv->ep->urb_list))
+		ep_idle(imx21, ep_priv);
+}
+
+/* ===========================================	*/
+/* ISOC Handling ... 				*/
+/* ===========================================	*/
+
+static void schedule_isoc_etds(struct usb_hcd *hcd,
+	struct usb_host_endpoint *ep)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	struct ep_priv *ep_priv = ep->hcpriv;
+	struct etd_priv *etd;
+	struct urb_priv *urb_priv;
+	struct td *td;
+	int etd_num;
+	int i;
+	int cur_frame;
+	u8 dir;
+
+	for (i = 0; i < NUM_ISO_ETDS; i++) {
+too_late:
+		if (list_empty(&ep_priv->td_list))
+			break;
+
+		etd_num = ep_priv->etd[i];
+		if (etd_num < 0)
+			break;
+
+		etd = &imx21->etd[etd_num];
+		if (etd->urb)
+			continue;
+
+		td = list_entry(ep_priv->td_list.next, struct td, list);
+		list_del(&td->list);
+		urb_priv = td->urb->hcpriv;
+
+		cur_frame = imx21_hc_get_frame(hcd);
+		if (frame_after(cur_frame, td->frame)) {
+			dev_dbg(imx21->dev, "isoc too late frame %d > %d\n",
+				cur_frame, td->frame);
+			urb_priv->isoc_status = -EXDEV;
+			td->urb->iso_frame_desc[
+				td->isoc_index].actual_length = 0;
+			td->urb->iso_frame_desc[td->isoc_index].status = -EXDEV;
+			if (--urb_priv->isoc_remaining == 0)
+				urb_done(hcd, td->urb, urb_priv->isoc_status);
+			goto too_late;
+		}
+
+		urb_priv->active = 1;
+		etd->td = td;
+		etd->ep = td->ep;
+		etd->urb = td->urb;
+		etd->len = td->len;
+
+		debug_isoc_submitted(imx21, cur_frame, td);
+
+		dir = usb_pipeout(td->urb->pipe) ? TD_DIR_OUT : TD_DIR_IN;
+		setup_etd_dword0(imx21, etd_num, td->urb, dir, etd->dmem_size);
+		etd_writel(imx21, etd_num, 1, etd->dmem_offset);
+		etd_writel(imx21, etd_num, 2,
+			(TD_NOTACCESSED << DW2_COMPCODE) |
+			((td->frame & 0xFFFF) << DW2_STARTFRM));
+		etd_writel(imx21, etd_num, 3,
+			(TD_NOTACCESSED << DW3_COMPCODE0) |
+			(td->len << DW3_PKTLEN0));
+
+		activate_etd(imx21, etd_num, td->data, dir);
+	}
+}
+
+static void isoc_etd_done(struct usb_hcd *hcd, struct urb *urb, int etd_num)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	int etd_mask = 1 << etd_num;
+	struct urb_priv *urb_priv = urb->hcpriv;
+	struct etd_priv *etd = imx21->etd + etd_num;
+	struct td *td = etd->td;
+	struct usb_host_endpoint *ep = etd->ep;
+	int isoc_index = td->isoc_index;
+	unsigned int pipe = urb->pipe;
+	int dir_in = usb_pipein(pipe);
+	int cc;
+	int bytes_xfrd;
+
+	disactivate_etd(imx21, etd_num);
+
+	cc = (etd_readl(imx21, etd_num, 3) >> DW3_COMPCODE0) & 0xf;
+	bytes_xfrd = etd_readl(imx21, etd_num, 3) & 0x3ff;
+
+	/* Input doesn't always fill the buffer, don't generate an error
+	 * when this happens.
+	 */
+	if (dir_in && (cc == TD_DATAUNDERRUN))
+		cc = TD_CC_NOERROR;
+
+	if (cc == TD_NOTACCESSED)
+		bytes_xfrd = 0;
+
+	debug_isoc_completed(imx21,
+		imx21_hc_get_frame(hcd), td, cc, bytes_xfrd);
+	if (cc) {
+		urb_priv->isoc_status = -EXDEV;
+		dev_dbg(imx21->dev,
+			"bad iso cc=0x%X frame=%d sched frame=%d "
+			"cnt=%d len=%d urb=%p etd=%d index=%d\n",
+			cc,  imx21_hc_get_frame(hcd), td->frame,
+			bytes_xfrd, td->len, urb, etd_num, isoc_index);
+	}
+
+	if (dir_in)
+		clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+
+	urb->actual_length += bytes_xfrd;
+	urb->iso_frame_desc[isoc_index].actual_length = bytes_xfrd;
+	urb->iso_frame_desc[isoc_index].status = cc_to_error[cc];
+
+	etd->td = NULL;
+	etd->urb = NULL;
+	etd->ep = NULL;
+
+	if (--urb_priv->isoc_remaining == 0)
+		urb_done(hcd, urb, urb_priv->isoc_status);
+
+	schedule_isoc_etds(hcd, ep);
+}
+
+static struct ep_priv *alloc_isoc_ep(
+	struct imx21 *imx21, struct usb_host_endpoint *ep)
+{
+	struct ep_priv *ep_priv;
+	int i;
+
+	ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC);
+	if (ep_priv == NULL)
+		return NULL;
+
+	/* Allocate the ETDs */
+	for (i = 0; i < NUM_ISO_ETDS; i++) {
+		ep_priv->etd[i] = alloc_etd(imx21);
+		if (ep_priv->etd[i] < 0) {
+			int j;
+			dev_err(imx21->dev, "isoc: Couldn't allocate etd\n");
+			for (j = 0; j < i; j++)
+				free_etd(imx21, ep_priv->etd[j]);
+			goto alloc_etd_failed;
+		}
+		imx21->etd[ep_priv->etd[i]].ep = ep;
+	}
+
+	INIT_LIST_HEAD(&ep_priv->td_list);
+	ep_priv->ep = ep;
+	ep->hcpriv = ep_priv;
+	return ep_priv;
+
+alloc_etd_failed:
+	kfree(ep_priv);
+	return NULL;
+}
+
+static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd,
+				     struct usb_host_endpoint *ep,
+				     struct urb *urb, gfp_t mem_flags)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	struct urb_priv *urb_priv;
+	unsigned long flags;
+	struct ep_priv *ep_priv;
+	struct td *td = NULL;
+	int i;
+	int ret;
+	int cur_frame;
+	u16 maxpacket;
+
+	urb_priv = kzalloc(sizeof(struct urb_priv), mem_flags);
+	if (urb_priv == NULL)
+		return -ENOMEM;
+
+	urb_priv->isoc_td = kzalloc(
+		sizeof(struct td) * urb->number_of_packets, mem_flags);
+	if (urb_priv->isoc_td == NULL) {
+		ret = -ENOMEM;
+		goto alloc_td_failed;
+	}
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	if (ep->hcpriv == NULL) {
+		ep_priv = alloc_isoc_ep(imx21, ep);
+		if (ep_priv == NULL) {
+			ret = -ENOMEM;
+			goto alloc_ep_failed;
+		}
+	} else {
+		ep_priv = ep->hcpriv;
+	}
+
+	ret = usb_hcd_link_urb_to_ep(hcd, urb);
+	if (ret)
+		goto link_failed;
+
+	urb->status = -EINPROGRESS;
+	urb->actual_length = 0;
+	urb->error_count = 0;
+	urb->hcpriv = urb_priv;
+	urb_priv->ep = ep;
+
+	/* allocate data memory for largest packets if not already done */
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+	for (i = 0; i < NUM_ISO_ETDS; i++) {
+		struct etd_priv *etd = &imx21->etd[ep_priv->etd[i]];
+
+		if (etd->dmem_size > 0 && etd->dmem_size < maxpacket) {
+			/* not sure if this can really occur.... */
+			dev_err(imx21->dev, "increasing isoc buffer %d->%d\n",
+				etd->dmem_size, maxpacket);
+			ret = -EMSGSIZE;
+			goto alloc_dmem_failed;
+		}
+
+		if (etd->dmem_size == 0) {
+			etd->dmem_offset = alloc_dmem(imx21, maxpacket, ep);
+			if (etd->dmem_offset < 0) {
+				dev_dbg(imx21->dev, "failed alloc isoc dmem\n");
+				ret = -EAGAIN;
+				goto alloc_dmem_failed;
+			}
+			etd->dmem_size = maxpacket;
+		}
+	}
+
+	/* calculate frame */
+	cur_frame = imx21_hc_get_frame(hcd);
+	if (urb->transfer_flags & URB_ISO_ASAP) {
+		if (list_empty(&ep_priv->td_list))
+			urb->start_frame = cur_frame + 5;
+		else
+			urb->start_frame = list_entry(
+				ep_priv->td_list.prev,
+				struct td, list)->frame + urb->interval;
+	}
+	urb->start_frame = wrap_frame(urb->start_frame);
+	if (frame_after(cur_frame, urb->start_frame)) {
+		dev_dbg(imx21->dev,
+			"enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
+			urb->start_frame, cur_frame,
+			(urb->transfer_flags & URB_ISO_ASAP) != 0);
+		urb->start_frame = wrap_frame(cur_frame + 1);
+	}
+
+	/* set up transfers */
+	td = urb_priv->isoc_td;
+	for (i = 0; i < urb->number_of_packets; i++, td++) {
+		td->ep = ep;
+		td->urb = urb;
+		td->len = urb->iso_frame_desc[i].length;
+		td->isoc_index = i;
+		td->frame = wrap_frame(urb->start_frame + urb->interval * i);
+		td->data = urb->transfer_dma + urb->iso_frame_desc[i].offset;
+		list_add_tail(&td->list, &ep_priv->td_list);
+	}
+
+	urb_priv->isoc_remaining = urb->number_of_packets;
+	dev_vdbg(imx21->dev, "setup %d packets for iso frame %d->%d\n",
+		urb->number_of_packets, urb->start_frame, td->frame);
+
+	debug_urb_submitted(imx21, urb);
+	schedule_isoc_etds(hcd, ep);
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	return 0;
+
+alloc_dmem_failed:
+	usb_hcd_unlink_urb_from_ep(hcd, urb);
+
+link_failed:
+alloc_ep_failed:
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	kfree(urb_priv->isoc_td);
+
+alloc_td_failed:
+	kfree(urb_priv);
+	return ret;
+}
+
+static void dequeue_isoc_urb(struct imx21 *imx21,
+	struct urb *urb, struct ep_priv *ep_priv)
+{
+	struct urb_priv *urb_priv = urb->hcpriv;
+	struct td *td, *tmp;
+	int i;
+
+	if (urb_priv->active) {
+		for (i = 0; i < NUM_ISO_ETDS; i++) {
+			int etd_num = ep_priv->etd[i];
+			if (etd_num != -1 && imx21->etd[etd_num].urb == urb) {
+				struct etd_priv *etd = imx21->etd + etd_num;
+
+				reset_etd(imx21, etd_num);
+				if (etd->dmem_size)
+					free_dmem(imx21, etd->dmem_offset);
+				etd->dmem_size = 0;
+			}
+		}
+	}
+
+	list_for_each_entry_safe(td, tmp, &ep_priv->td_list, list) {
+		if (td->urb == urb) {
+			dev_vdbg(imx21->dev, "removing td %p\n", td);
+			list_del(&td->list);
+		}
+	}
+}
+
+/* =========================================== */
+/* NON ISOC Handling ... 			*/
+/* =========================================== */
+
+static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb)
+{
+	unsigned int pipe = urb->pipe;
+	struct urb_priv *urb_priv = urb->hcpriv;
+	struct ep_priv *ep_priv = urb_priv->ep->hcpriv;
+	int state = urb_priv->state;
+	int etd_num = ep_priv->etd[0];
+	struct etd_priv *etd;
+	int dmem_offset;
+	u32 count;
+	u16 etd_buf_size;
+	u16 maxpacket;
+	u8 dir;
+	u8 bufround;
+	u8 datatoggle;
+	u8 interval = 0;
+	u8 relpolpos = 0;
+
+	if (etd_num < 0) {
+		dev_err(imx21->dev, "No valid ETD\n");
+		return;
+	}
+	if (readl(imx21->regs + USBH_ETDENSET) & (1 << etd_num))
+		dev_err(imx21->dev, "submitting to active ETD %d\n", etd_num);
+
+	etd = &imx21->etd[etd_num];
+	maxpacket = usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe));
+	if (!maxpacket)
+		maxpacket = 8;
+
+	if (usb_pipecontrol(pipe) && (state != US_CTRL_DATA)) {
+		if (state == US_CTRL_SETUP) {
+			dir = TD_DIR_SETUP;
+			etd->dma_handle = urb->setup_dma;
+			bufround = 0;
+			count = 8;
+			datatoggle = TD_TOGGLE_DATA0;
+		} else {	/* US_CTRL_ACK */
+			dir = usb_pipeout(pipe) ? TD_DIR_IN : TD_DIR_OUT;
+			etd->dma_handle = urb->transfer_dma;
+			bufround = 0;
+			count = 0;
+			datatoggle = TD_TOGGLE_DATA1;
+		}
+	} else {
+		dir = usb_pipeout(pipe) ? TD_DIR_OUT : TD_DIR_IN;
+		bufround = (dir == TD_DIR_IN) ? 1 : 0;
+		etd->dma_handle = urb->transfer_dma;
+		if (usb_pipebulk(pipe) && (state == US_BULK0))
+			count = 0;
+		else
+			count = urb->transfer_buffer_length;
+
+		if (usb_pipecontrol(pipe)) {
+			datatoggle = TD_TOGGLE_DATA1;
+		} else {
+			if (usb_gettoggle(
+					urb->dev,
+					usb_pipeendpoint(urb->pipe),
+					usb_pipeout(urb->pipe)))
+				datatoggle = TD_TOGGLE_DATA1;
+			else
+				datatoggle = TD_TOGGLE_DATA0;
+		}
+	}
+
+	etd->urb = urb;
+	etd->ep = urb_priv->ep;
+	etd->len = count;
+
+	if (usb_pipeint(pipe)) {
+		interval = urb->interval;
+		relpolpos = (readl(imx21->regs + USBH_FRMNUB) + 1) & 0xff;
+	}
+
+	/* Write ETD to device memory */
+	setup_etd_dword0(imx21, etd_num, urb, dir, maxpacket);
+
+	etd_writel(imx21, etd_num, 2,
+		(u32) interval << DW2_POLINTERV |
+		((u32) relpolpos << DW2_RELPOLPOS) |
+		((u32) dir << DW2_DIRPID) |
+		((u32) bufround << DW2_BUFROUND) |
+		((u32) datatoggle << DW2_DATATOG) |
+		((u32) TD_NOTACCESSED << DW2_COMPCODE));
+
+	/* DMA will always transfer buffer size even if TOBYCNT in DWORD3
+	   is smaller. Make sure we don't overrun the buffer!
+	 */
+	if (count && count < maxpacket)
+		etd_buf_size = count;
+	else
+		etd_buf_size = maxpacket;
+
+	etd_writel(imx21, etd_num, 3,
+		((u32) (etd_buf_size - 1) << DW3_BUFSIZE) | (u32) count);
+
+	if (!count)
+		etd->dma_handle = 0;
+
+	/* allocate x and y buffer space at once */
+	etd->dmem_size = (count > maxpacket) ? maxpacket * 2 : maxpacket;
+	dmem_offset = alloc_dmem(imx21, etd->dmem_size, urb_priv->ep);
+	if (dmem_offset < 0) {
+		/* Setup everything we can in HW and update when we get DMEM */
+		etd_writel(imx21, etd_num, 1, (u32)maxpacket << 16);
+
+		dev_dbg(imx21->dev, "Queuing etd %d for DMEM\n", etd_num);
+		debug_urb_queued_for_dmem(imx21, urb);
+		list_add_tail(&etd->queue, &imx21->queue_for_dmem);
+		return;
+	}
+
+	etd_writel(imx21, etd_num, 1,
+		(((u32) dmem_offset + (u32) maxpacket) << DW1_YBUFSRTAD) |
+		(u32) dmem_offset);
+
+	urb_priv->active = 1;
+
+	/* enable the ETD to kick off transfer */
+	dev_vdbg(imx21->dev, "Activating etd %d for %d bytes %s\n",
+		etd_num, count, dir != TD_DIR_IN ? "out" : "in");
+	activate_etd(imx21, etd_num, etd->dma_handle, dir);
+
+}
+
+static void nonisoc_etd_done(struct usb_hcd *hcd, struct urb *urb, int etd_num)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	struct etd_priv *etd = &imx21->etd[etd_num];
+	u32 etd_mask = 1 << etd_num;
+	struct urb_priv *urb_priv = urb->hcpriv;
+	int dir;
+	u16 xbufaddr;
+	int cc;
+	u32 bytes_xfrd;
+	int etd_done;
+
+	disactivate_etd(imx21, etd_num);
+
+	dir = (etd_readl(imx21, etd_num, 0) >> DW0_DIRECT) & 0x3;
+	xbufaddr = etd_readl(imx21, etd_num, 1) & 0xffff;
+	cc = (etd_readl(imx21, etd_num, 2) >> DW2_COMPCODE) & 0xf;
+	bytes_xfrd = etd->len - (etd_readl(imx21, etd_num, 3) & 0x1fffff);
+
+	/* save toggle carry */
+	usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+		      usb_pipeout(urb->pipe),
+		      (etd_readl(imx21, etd_num, 0) >> DW0_TOGCRY) & 0x1);
+
+	if (dir == TD_DIR_IN) {
+		clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+		clear_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
+	}
+	free_dmem(imx21, xbufaddr);
+
+	urb->error_count = 0;
+	if (!(urb->transfer_flags & URB_SHORT_NOT_OK)
+			&& (cc == TD_DATAUNDERRUN))
+		cc = TD_CC_NOERROR;
+
+	if (cc != 0)
+		dev_vdbg(imx21->dev, "cc is 0x%x\n", cc);
+
+	etd_done = (cc_to_error[cc] != 0);	/* stop if error */
+
+	switch (usb_pipetype(urb->pipe)) {
+	case PIPE_CONTROL:
+		switch (urb_priv->state) {
+		case US_CTRL_SETUP:
+			if (urb->transfer_buffer_length > 0)
+				urb_priv->state = US_CTRL_DATA;
+			else
+				urb_priv->state = US_CTRL_ACK;
+			break;
+		case US_CTRL_DATA:
+			urb->actual_length += bytes_xfrd;
+			urb_priv->state = US_CTRL_ACK;
+			break;
+		case US_CTRL_ACK:
+			etd_done = 1;
+			break;
+		default:
+			dev_err(imx21->dev,
+				"Invalid pipe state %d\n", urb_priv->state);
+			etd_done = 1;
+			break;
+		}
+		break;
+
+	case PIPE_BULK:
+		urb->actual_length += bytes_xfrd;
+		if ((urb_priv->state == US_BULK)
+		    && (urb->transfer_flags & URB_ZERO_PACKET)
+		    && urb->transfer_buffer_length > 0
+		    && ((urb->transfer_buffer_length %
+			 usb_maxpacket(urb->dev, urb->pipe,
+				       usb_pipeout(urb->pipe))) == 0)) {
+			/* need a 0-packet */
+			urb_priv->state = US_BULK0;
+		} else {
+			etd_done = 1;
+		}
+		break;
+
+	case PIPE_INTERRUPT:
+		urb->actual_length += bytes_xfrd;
+		etd_done = 1;
+		break;
+	}
+
+	if (!etd_done) {
+		dev_vdbg(imx21->dev, "next state=%d\n", urb_priv->state);
+		schedule_nonisoc_etd(imx21, urb);
+	} else {
+		struct usb_host_endpoint *ep = urb->ep;
+
+		urb_done(hcd, urb, cc_to_error[cc]);
+		etd->urb = NULL;
+
+		if (!list_empty(&ep->urb_list)) {
+			urb = list_first_entry(&ep->urb_list,
+				struct urb, urb_list);
+			dev_vdbg(imx21->dev, "next URB %p\n", urb);
+			schedule_nonisoc_etd(imx21, urb);
+		}
+	}
+}
+
+static struct ep_priv *alloc_ep(void)
+{
+	int i;
+	struct ep_priv *ep_priv;
+
+	ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC);
+	if (!ep_priv)
+		return NULL;
+
+	for (i = 0; i < NUM_ISO_ETDS; ++i)
+		ep_priv->etd[i] = -1;
+
+	return ep_priv;
+}
+
+static int imx21_hc_urb_enqueue(struct usb_hcd *hcd,
+				struct urb *urb, gfp_t mem_flags)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	struct usb_host_endpoint *ep = urb->ep;
+	struct urb_priv *urb_priv;
+	struct ep_priv *ep_priv;
+	struct etd_priv *etd;
+	int ret;
+	unsigned long flags;
+	int new_ep = 0;
+
+	dev_vdbg(imx21->dev,
+		"enqueue urb=%p ep=%p len=%d "
+		"buffer=%p dma=%08X setupBuf=%p setupDma=%08X\n",
+		urb, ep,
+		urb->transfer_buffer_length,
+		urb->transfer_buffer, urb->transfer_dma,
+		urb->setup_packet, urb->setup_dma);
+
+	if (usb_pipeisoc(urb->pipe))
+		return imx21_hc_urb_enqueue_isoc(hcd, ep, urb, mem_flags);
+
+	urb_priv = kzalloc(sizeof(struct urb_priv), mem_flags);
+	if (!urb_priv)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	ep_priv = ep->hcpriv;
+	if (ep_priv == NULL) {
+		ep_priv = alloc_ep();
+		if (!ep_priv) {
+			ret = -ENOMEM;
+			goto failed_alloc_ep;
+		}
+		ep->hcpriv = ep_priv;
+		ep_priv->ep = ep;
+		new_ep = 1;
+	}
+
+	ret = usb_hcd_link_urb_to_ep(hcd, urb);
+	if (ret)
+		goto failed_link;
+
+	urb->status = -EINPROGRESS;
+	urb->actual_length = 0;
+	urb->error_count = 0;
+	urb->hcpriv = urb_priv;
+	urb_priv->ep = ep;
+
+	switch (usb_pipetype(urb->pipe)) {
+	case PIPE_CONTROL:
+		urb_priv->state = US_CTRL_SETUP;
+		break;
+	case PIPE_BULK:
+		urb_priv->state = US_BULK;
+		break;
+	}
+
+	debug_urb_submitted(imx21, urb);
+	if (ep_priv->etd[0] < 0) {
+		if (ep_priv->waiting_etd) {
+			dev_dbg(imx21->dev,
+				"no ETD available already queued %p\n",
+				ep_priv);
+			debug_urb_queued_for_etd(imx21, urb);
+			goto out;
+		}
+		ep_priv->etd[0] = alloc_etd(imx21);
+		if (ep_priv->etd[0] < 0) {
+			dev_dbg(imx21->dev,
+				"no ETD available queueing %p\n", ep_priv);
+			debug_urb_queued_for_etd(imx21, urb);
+			list_add_tail(&ep_priv->queue, &imx21->queue_for_etd);
+			ep_priv->waiting_etd = 1;
+			goto out;
+		}
+	}
+
+	/* Schedule if no URB already active for this endpoint */
+	etd = &imx21->etd[ep_priv->etd[0]];
+	if (etd->urb == NULL) {
+		DEBUG_LOG_FRAME(imx21, etd, last_req);
+		schedule_nonisoc_etd(imx21, urb);
+	}
+
+out:
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	return 0;
+
+failed_link:
+failed_alloc_ep:
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	kfree(urb_priv);
+	return ret;
+}
+
+static int imx21_hc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
+				int status)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	unsigned long flags;
+	struct usb_host_endpoint *ep;
+	struct ep_priv *ep_priv;
+	struct urb_priv *urb_priv = urb->hcpriv;
+	int ret = -EINVAL;
+
+	dev_vdbg(imx21->dev, "dequeue urb=%p iso=%d status=%d\n",
+		urb, usb_pipeisoc(urb->pipe), status);
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	ret = usb_hcd_check_unlink_urb(hcd, urb, status);
+	if (ret)
+		goto fail;
+	ep = urb_priv->ep;
+	ep_priv = ep->hcpriv;
+
+	debug_urb_unlinked(imx21, urb);
+
+	if (usb_pipeisoc(urb->pipe)) {
+		dequeue_isoc_urb(imx21, urb, ep_priv);
+		schedule_isoc_etds(hcd, ep);
+	} else if (urb_priv->active) {
+		int etd_num = ep_priv->etd[0];
+		if (etd_num != -1) {
+			disactivate_etd(imx21, etd_num);
+			free_dmem(imx21, etd_readl(imx21, etd_num, 1) & 0xffff);
+			imx21->etd[etd_num].urb = NULL;
+		}
+	}
+
+	urb_done(hcd, urb, status);
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	return 0;
+
+fail:
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	return ret;
+}
+
+/* =========================================== */
+/* Interrupt dispatch	 			*/
+/* =========================================== */
+
+static void process_etds(struct usb_hcd *hcd, struct imx21 *imx21, int sof)
+{
+	int etd_num;
+	int enable_sof_int = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	for (etd_num = 0; etd_num < USB_NUM_ETD; etd_num++) {
+		u32 etd_mask = 1 << etd_num;
+		u32 enabled = readl(imx21->regs + USBH_ETDENSET) & etd_mask;
+		u32 done = readl(imx21->regs + USBH_ETDDONESTAT) & etd_mask;
+		struct etd_priv *etd = &imx21->etd[etd_num];
+
+
+		if (done) {
+			DEBUG_LOG_FRAME(imx21, etd, last_int);
+		} else {
+/*
+ * Kludge warning!
+ *
+ * When multiple transfers are using the bus we sometimes get into a state
+ * where the transfer has completed (the CC field of the ETD is != 0x0F),
+ * the ETD has self disabled but the ETDDONESTAT flag is not set
+ * (and hence no interrupt occurs).
+ * This causes the transfer in question to hang.
+ * The kludge below checks for this condition at each SOF and processes any
+ * blocked ETDs (after an arbitary 10 frame wait)
+ *
+ * With a single active transfer the usbtest test suite will run for days
+ * without the kludge.
+ * With other bus activity (eg mass storage) even just test1 will hang without
+ * the kludge.
+ */
+			u32 dword0;
+			int cc;
+
+			if (etd->active_count && !enabled) /* suspicious... */
+				enable_sof_int = 1;
+
+			if (!sof || enabled || !etd->active_count)
+				continue;
+
+			cc = etd_readl(imx21, etd_num, 2) >> DW2_COMPCODE;
+			if (cc == TD_NOTACCESSED)
+				continue;
+
+			if (++etd->active_count < 10)
+				continue;
+
+			dword0 = etd_readl(imx21, etd_num, 0);
+			dev_dbg(imx21->dev,
+				"unblock ETD %d dev=0x%X ep=0x%X cc=0x%02X!\n",
+				etd_num, dword0 & 0x7F,
+				(dword0 >> DW0_ENDPNT) & 0x0F,
+				cc);
+
+#ifdef DEBUG
+			dev_dbg(imx21->dev,
+				"frame: act=%d disact=%d"
+				" int=%d req=%d cur=%d\n",
+				etd->activated_frame,
+				etd->disactivated_frame,
+				etd->last_int_frame,
+				etd->last_req_frame,
+				readl(imx21->regs + USBH_FRMNUB));
+			imx21->debug_unblocks++;
+#endif
+			etd->active_count = 0;
+/* End of kludge */
+		}
+
+		if (etd->ep == NULL || etd->urb == NULL) {
+			dev_dbg(imx21->dev,
+				"Interrupt for unexpected etd %d"
+				" ep=%p urb=%p\n",
+				etd_num, etd->ep, etd->urb);
+			disactivate_etd(imx21, etd_num);
+			continue;
+		}
+
+		if (usb_pipeisoc(etd->urb->pipe))
+			isoc_etd_done(hcd, etd->urb, etd_num);
+		else
+			nonisoc_etd_done(hcd, etd->urb, etd_num);
+	}
+
+	/* only enable SOF interrupt if it may be needed for the kludge */
+	if (enable_sof_int)
+		set_register_bits(imx21, USBH_SYSIEN, USBH_SYSIEN_SOFINT);
+	else
+		clear_register_bits(imx21, USBH_SYSIEN, USBH_SYSIEN_SOFINT);
+
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+}
+
+static irqreturn_t imx21_irq(struct usb_hcd *hcd)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	u32 ints = readl(imx21->regs + USBH_SYSISR);
+
+	if (ints & USBH_SYSIEN_HERRINT)
+		dev_dbg(imx21->dev, "Scheduling error\n");
+
+	if (ints & USBH_SYSIEN_SORINT)
+		dev_dbg(imx21->dev, "Scheduling overrun\n");
+
+	if (ints & (USBH_SYSISR_DONEINT | USBH_SYSISR_SOFINT))
+		process_etds(hcd, imx21, ints & USBH_SYSISR_SOFINT);
+
+	writel(ints, imx21->regs + USBH_SYSISR);
+	return IRQ_HANDLED;
+}
+
+static void imx21_hc_endpoint_disable(struct usb_hcd *hcd,
+				      struct usb_host_endpoint *ep)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	unsigned long flags;
+	struct ep_priv *ep_priv;
+	int i;
+
+	if (ep == NULL)
+		return;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+	ep_priv = ep->hcpriv;
+	dev_vdbg(imx21->dev, "disable ep=%p, ep->hcpriv=%p\n", ep, ep_priv);
+
+	if (!list_empty(&ep->urb_list))
+		dev_dbg(imx21->dev, "ep's URB list is not empty\n");
+
+	if (ep_priv != NULL) {
+		for (i = 0; i < NUM_ISO_ETDS; i++) {
+			if (ep_priv->etd[i] > -1)
+				dev_dbg(imx21->dev, "free etd %d for disable\n",
+					ep_priv->etd[i]);
+
+			free_etd(imx21, ep_priv->etd[i]);
+		}
+		kfree(ep_priv);
+		ep->hcpriv = NULL;
+	}
+
+	for (i = 0; i < USB_NUM_ETD; i++) {
+		if (imx21->etd[i].alloc && imx21->etd[i].ep == ep) {
+			dev_err(imx21->dev,
+				"Active etd %d for disabled ep=%p!\n", i, ep);
+			free_etd(imx21, i);
+		}
+	}
+	free_epdmem(imx21, ep);
+	spin_unlock_irqrestore(&imx21->lock, flags);
+}
+
+/* =========================================== */
+/* Hub handling		 			*/
+/* =========================================== */
+
+static int get_hub_descriptor(struct usb_hcd *hcd,
+			      struct usb_hub_descriptor *desc)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	desc->bDescriptorType = 0x29;	/* HUB descriptor */
+	desc->bHubContrCurrent = 0;
+
+	desc->bNbrPorts = readl(imx21->regs + USBH_ROOTHUBA)
+		& USBH_ROOTHUBA_NDNSTMPRT_MASK;
+	desc->bDescLength = 9;
+	desc->bPwrOn2PwrGood = 0;
+	desc->wHubCharacteristics = (__force __u16) cpu_to_le16(
+		0x0002 |	/* No power switching */
+		0x0010 |	/* No over current protection */
+		0);
+
+	desc->bitmap[0] = 1 << 1;
+	desc->bitmap[1] = ~0;
+	return 0;
+}
+
+static int imx21_hc_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	int ports;
+	int changed = 0;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+	ports = readl(imx21->regs + USBH_ROOTHUBA)
+		& USBH_ROOTHUBA_NDNSTMPRT_MASK;
+	if (ports > 7) {
+		ports = 7;
+		dev_err(imx21->dev, "ports %d > 7\n", ports);
+	}
+	for (i = 0; i < ports; i++) {
+		if (readl(imx21->regs + USBH_PORTSTAT(i)) &
+			(USBH_PORTSTAT_CONNECTSC |
+			USBH_PORTSTAT_PRTENBLSC |
+			USBH_PORTSTAT_PRTSTATSC |
+			USBH_PORTSTAT_OVRCURIC |
+			USBH_PORTSTAT_PRTRSTSC)) {
+
+			changed = 1;
+			buf[0] |= 1 << (i + 1);
+		}
+	}
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	if (changed)
+		dev_info(imx21->dev, "Hub status changed\n");
+	return changed;
+}
+
+static int imx21_hc_hub_control(struct usb_hcd *hcd,
+				u16 typeReq,
+				u16 wValue, u16 wIndex, char *buf, u16 wLength)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	int rc = 0;
+	u32 status_write = 0;
+
+	switch (typeReq) {
+	case ClearHubFeature:
+		dev_dbg(imx21->dev, "ClearHubFeature\n");
+		switch (wValue) {
+		case C_HUB_OVER_CURRENT:
+			dev_dbg(imx21->dev, "    OVER_CURRENT\n");
+			break;
+		case C_HUB_LOCAL_POWER:
+			dev_dbg(imx21->dev, "    LOCAL_POWER\n");
+			break;
+		default:
+			dev_dbg(imx21->dev, "    unknown\n");
+			rc = -EINVAL;
+			break;
+		}
+		break;
+
+	case ClearPortFeature:
+		dev_dbg(imx21->dev, "ClearPortFeature\n");
+		switch (wValue) {
+		case USB_PORT_FEAT_ENABLE:
+			dev_dbg(imx21->dev, "    ENABLE\n");
+			status_write = USBH_PORTSTAT_CURCONST;
+			break;
+		case USB_PORT_FEAT_SUSPEND:
+			dev_dbg(imx21->dev, "    SUSPEND\n");
+			status_write = USBH_PORTSTAT_PRTOVRCURI;
+			break;
+		case USB_PORT_FEAT_POWER:
+			dev_dbg(imx21->dev, "    POWER\n");
+			status_write = USBH_PORTSTAT_LSDEVCON;
+			break;
+		case USB_PORT_FEAT_C_ENABLE:
+			dev_dbg(imx21->dev, "    C_ENABLE\n");
+			status_write = USBH_PORTSTAT_PRTENBLSC;
+			break;
+		case USB_PORT_FEAT_C_SUSPEND:
+			dev_dbg(imx21->dev, "    C_SUSPEND\n");
+			status_write = USBH_PORTSTAT_PRTSTATSC;
+			break;
+		case USB_PORT_FEAT_C_CONNECTION:
+			dev_dbg(imx21->dev, "    C_CONNECTION\n");
+			status_write = USBH_PORTSTAT_CONNECTSC;
+			break;
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+			dev_dbg(imx21->dev, "    C_OVER_CURRENT\n");
+			status_write = USBH_PORTSTAT_OVRCURIC;
+			break;
+		case USB_PORT_FEAT_C_RESET:
+			dev_dbg(imx21->dev, "    C_RESET\n");
+			status_write = USBH_PORTSTAT_PRTRSTSC;
+			break;
+		default:
+			dev_dbg(imx21->dev, "    unknown\n");
+			rc = -EINVAL;
+			break;
+		}
+
+		break;
+
+	case GetHubDescriptor:
+		dev_dbg(imx21->dev, "GetHubDescriptor\n");
+		rc = get_hub_descriptor(hcd, (void *)buf);
+		break;
+
+	case GetHubStatus:
+		dev_dbg(imx21->dev, "  GetHubStatus\n");
+		*(__le32 *) buf = 0;
+		break;
+
+	case GetPortStatus:
+		dev_dbg(imx21->dev, "GetPortStatus: port: %d, 0x%x\n",
+		    wIndex, USBH_PORTSTAT(wIndex - 1));
+		*(__le32 *) buf = readl(imx21->regs +
+			USBH_PORTSTAT(wIndex - 1));
+		break;
+
+	case SetHubFeature:
+		dev_dbg(imx21->dev, "SetHubFeature\n");
+		switch (wValue) {
+		case C_HUB_OVER_CURRENT:
+			dev_dbg(imx21->dev, "    OVER_CURRENT\n");
+			break;
+
+		case C_HUB_LOCAL_POWER:
+			dev_dbg(imx21->dev, "    LOCAL_POWER\n");
+			break;
+		default:
+			dev_dbg(imx21->dev, "    unknown\n");
+			rc = -EINVAL;
+			break;
+		}
+
+		break;
+
+	case SetPortFeature:
+		dev_dbg(imx21->dev, "SetPortFeature\n");
+		switch (wValue) {
+		case USB_PORT_FEAT_SUSPEND:
+			dev_dbg(imx21->dev, "    SUSPEND\n");
+			status_write = USBH_PORTSTAT_PRTSUSPST;
+			break;
+		case USB_PORT_FEAT_POWER:
+			dev_dbg(imx21->dev, "    POWER\n");
+			status_write = USBH_PORTSTAT_PRTPWRST;
+			break;
+		case USB_PORT_FEAT_RESET:
+			dev_dbg(imx21->dev, "    RESET\n");
+			status_write = USBH_PORTSTAT_PRTRSTST;
+			break;
+		default:
+			dev_dbg(imx21->dev, "    unknown\n");
+			rc = -EINVAL;
+			break;
+		}
+		break;
+
+	default:
+		dev_dbg(imx21->dev, "  unknown\n");
+		rc = -EINVAL;
+		break;
+	}
+
+	if (status_write)
+		writel(status_write, imx21->regs + USBH_PORTSTAT(wIndex - 1));
+	return rc;
+}
+
+/* =========================================== */
+/* Host controller management 			*/
+/* =========================================== */
+
+static int imx21_hc_reset(struct usb_hcd *hcd)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	unsigned long timeout;
+	unsigned long flags;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	/* Reset the Host controler modules */
+	writel(USBOTG_RST_RSTCTRL | USBOTG_RST_RSTRH |
+		USBOTG_RST_RSTHSIE | USBOTG_RST_RSTHC,
+		imx21->regs + USBOTG_RST_CTRL);
+
+	/* Wait for reset to finish */
+	timeout = jiffies + HZ;
+	while (readl(imx21->regs + USBOTG_RST_CTRL) != 0) {
+		if (time_after(jiffies, timeout)) {
+			spin_unlock_irqrestore(&imx21->lock, flags);
+			dev_err(imx21->dev, "timeout waiting for reset\n");
+			return -ETIMEDOUT;
+		}
+		spin_unlock_irq(&imx21->lock);
+		schedule_timeout(1);
+		spin_lock_irq(&imx21->lock);
+	}
+	spin_unlock_irqrestore(&imx21->lock, flags);
+	return 0;
+}
+
+static int __devinit imx21_hc_start(struct usb_hcd *hcd)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	unsigned long flags;
+	int i, j;
+	u32 hw_mode = USBOTG_HWMODE_CRECFG_HOST;
+	u32 usb_control = 0;
+
+	hw_mode |= ((imx21->pdata->host_xcvr << USBOTG_HWMODE_HOSTXCVR_SHIFT) &
+			USBOTG_HWMODE_HOSTXCVR_MASK);
+	hw_mode |= ((imx21->pdata->otg_xcvr << USBOTG_HWMODE_OTGXCVR_SHIFT) &
+			USBOTG_HWMODE_OTGXCVR_MASK);
+
+	if (imx21->pdata->host1_txenoe)
+		usb_control |= USBCTRL_HOST1_TXEN_OE;
+
+	if (!imx21->pdata->host1_xcverless)
+		usb_control |= USBCTRL_HOST1_BYP_TLL;
+
+	if (imx21->pdata->otg_ext_xcvr)
+		usb_control |= USBCTRL_OTC_RCV_RXDP;
+
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	writel((USBOTG_CLK_CTRL_HST | USBOTG_CLK_CTRL_MAIN),
+		imx21->regs + USBOTG_CLK_CTRL);
+	writel(hw_mode, imx21->regs + USBOTG_HWMODE);
+	writel(usb_control, imx21->regs + USBCTRL);
+	writel(USB_MISCCONTROL_SKPRTRY  | USB_MISCCONTROL_ARBMODE,
+		imx21->regs + USB_MISCCONTROL);
+
+	/* Clear the ETDs */
+	for (i = 0; i < USB_NUM_ETD; i++)
+		for (j = 0; j < 4; j++)
+			etd_writel(imx21, i, j, 0);
+
+	/* Take the HC out of reset */
+	writel(USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL | USBH_HOST_CTRL_CTLBLKSR_1,
+		imx21->regs + USBH_HOST_CTRL);
+
+	/* Enable ports */
+	if (imx21->pdata->enable_otg_host)
+		writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
+			imx21->regs + USBH_PORTSTAT(0));
+
+	if (imx21->pdata->enable_host1)
+		writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
+			imx21->regs + USBH_PORTSTAT(1));
+
+	if (imx21->pdata->enable_host2)
+		writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
+			imx21->regs + USBH_PORTSTAT(2));
+
+
+	hcd->state = HC_STATE_RUNNING;
+
+	/* Enable host controller interrupts */
+	set_register_bits(imx21, USBH_SYSIEN,
+		USBH_SYSIEN_HERRINT |
+		USBH_SYSIEN_DONEINT | USBH_SYSIEN_SORINT);
+	set_register_bits(imx21, USBOTG_CINT_STEN, USBOTG_HCINT);
+
+	spin_unlock_irqrestore(&imx21->lock, flags);
+
+	return 0;
+}
+
+static void imx21_hc_stop(struct usb_hcd *hcd)
+{
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	unsigned long flags;
+
+	spin_lock_irqsave(&imx21->lock, flags);
+
+	writel(0, imx21->regs + USBH_SYSIEN);
+	clear_register_bits(imx21, USBOTG_CINT_STEN, USBOTG_HCINT);
+	clear_register_bits(imx21, USBOTG_CLK_CTRL_HST | USBOTG_CLK_CTRL_MAIN,
+					USBOTG_CLK_CTRL);
+	spin_unlock_irqrestore(&imx21->lock, flags);
+}
+
+/* =========================================== */
+/* Driver glue		 			*/
+/* =========================================== */
+
+static struct hc_driver imx21_hc_driver = {
+	.description = hcd_name,
+	.product_desc = "IMX21 USB Host Controller",
+	.hcd_priv_size = sizeof(struct imx21),
+
+	.flags = HCD_USB11,
+	.irq = imx21_irq,
+
+	.reset = imx21_hc_reset,
+	.start = imx21_hc_start,
+	.stop = imx21_hc_stop,
+
+	/* I/O requests */
+	.urb_enqueue = imx21_hc_urb_enqueue,
+	.urb_dequeue = imx21_hc_urb_dequeue,
+	.endpoint_disable = imx21_hc_endpoint_disable,
+
+	/* scheduling support */
+	.get_frame_number = imx21_hc_get_frame,
+
+	/* Root hub support */
+	.hub_status_data = imx21_hc_hub_status_data,
+	.hub_control = imx21_hc_hub_control,
+
+};
+
+static struct mx21_usbh_platform_data default_pdata = {
+	.host_xcvr = MX21_USBXCVR_TXDIF_RXDIF,
+	.otg_xcvr = MX21_USBXCVR_TXDIF_RXDIF,
+	.enable_host1 = 1,
+	.enable_host2 = 1,
+	.enable_otg_host = 1,
+
+};
+
+static int imx21_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct imx21 *imx21 = hcd_to_imx21(hcd);
+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	remove_debug_files(imx21);
+	usb_remove_hcd(hcd);
+
+	if (res != NULL) {
+		clk_disable(imx21->clk);
+		clk_put(imx21->clk);
+		iounmap(imx21->regs);
+		release_mem_region(res->start, resource_size(res));
+	}
+
+	kfree(hcd);
+	return 0;
+}
+
+
+static int imx21_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	struct imx21 *imx21;
+	struct resource *res;
+	int ret;
+	int irq;
+
+	printk(KERN_INFO "%s\n", imx21_hc_driver.product_desc);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return -ENXIO;
+
+	hcd = usb_create_hcd(&imx21_hc_driver,
+		&pdev->dev, dev_name(&pdev->dev));
+	if (hcd == NULL) {
+		dev_err(&pdev->dev, "Cannot create hcd (%s)\n",
+		    dev_name(&pdev->dev));
+		return -ENOMEM;
+	}
+
+	imx21 = hcd_to_imx21(hcd);
+	imx21->dev = &pdev->dev;
+	imx21->pdata = pdev->dev.platform_data;
+	if (!imx21->pdata)
+		imx21->pdata = &default_pdata;
+
+	spin_lock_init(&imx21->lock);
+	INIT_LIST_HEAD(&imx21->dmem_list);
+	INIT_LIST_HEAD(&imx21->queue_for_etd);
+	INIT_LIST_HEAD(&imx21->queue_for_dmem);
+	create_debug_files(imx21);
+
+	res = request_mem_region(res->start, resource_size(res), hcd_name);
+	if (!res) {
+		ret = -EBUSY;
+		goto failed_request_mem;
+	}
+
+	imx21->regs = ioremap(res->start, resource_size(res));
+	if (imx21->regs == NULL) {
+		dev_err(imx21->dev, "Cannot map registers\n");
+		ret = -ENOMEM;
+		goto failed_ioremap;
+	}
+
+	/* Enable clocks source */
+	imx21->clk = clk_get(imx21->dev, NULL);
+	if (IS_ERR(imx21->clk)) {
+		dev_err(imx21->dev, "no clock found\n");
+		ret = PTR_ERR(imx21->clk);
+		goto failed_clock_get;
+	}
+
+	ret = clk_set_rate(imx21->clk, clk_round_rate(imx21->clk, 48000000));
+	if (ret)
+		goto failed_clock_set;
+	ret = clk_enable(imx21->clk);
+	if (ret)
+		goto failed_clock_enable;
+
+	dev_info(imx21->dev, "Hardware HC revision: 0x%02X\n",
+		(readl(imx21->regs + USBOTG_HWMODE) >> 16) & 0xFF);
+
+	ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+	if (ret != 0) {
+		dev_err(imx21->dev, "usb_add_hcd() returned %d\n", ret);
+		goto failed_add_hcd;
+	}
+
+	return 0;
+
+failed_add_hcd:
+	clk_disable(imx21->clk);
+failed_clock_enable:
+failed_clock_set:
+	clk_put(imx21->clk);
+failed_clock_get:
+	iounmap(imx21->regs);
+failed_ioremap:
+	release_mem_region(res->start, res->end - res->start);
+failed_request_mem:
+	remove_debug_files(imx21);
+	usb_put_hcd(hcd);
+	return ret;
+}
+
+static struct platform_driver imx21_hcd_driver = {
+	.driver = {
+		   .name = (char *)hcd_name,
+		   },
+	.probe = imx21_probe,
+	.remove = imx21_remove,
+	.suspend = NULL,
+	.resume = NULL,
+};
+
+static int __init imx21_hcd_init(void)
+{
+	return platform_driver_register(&imx21_hcd_driver);
+}
+
+static void __exit imx21_hcd_cleanup(void)
+{
+	platform_driver_unregister(&imx21_hcd_driver);
+}
+
+module_init(imx21_hcd_init);
+module_exit(imx21_hcd_cleanup);
+
+MODULE_DESCRIPTION("i.MX21 USB Host controller");
+MODULE_AUTHOR("Martin Fuzzey");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:imx21-hcd");

drivers/usb/host/imx21-hcd.h

···
+/*
+ * Macros and prototypes for i.MX21
+ *
+ * Copyright (C) 2006 Loping Dog Embedded Systems
+ * Copyright (C) 2009 Martin Fuzzey
+ * Originally written by Jay Monkman <[e-mail]>
+ * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __LINUX_IMX21_HCD_H__
+#define __LINUX_IMX21_HCD_H__
+
+#include <mach/mx21-usbhost.h>
+
+#define NUM_ISO_ETDS 	2
+#define USB_NUM_ETD	32
+#define DMEM_SIZE   	4096
+
+/* Register definitions */
+#define USBOTG_HWMODE		0x00
+#define USBOTG_HWMODE_ANASDBEN		(1 << 14)
+#define USBOTG_HWMODE_OTGXCVR_SHIFT	6
+#define USBOTG_HWMODE_OTGXCVR_MASK	(3 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TD_RD	(0 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TS_RD	(2 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TD_RS	(1 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TS_RS	(3 << 6)
+#define USBOTG_HWMODE_HOSTXCVR_SHIFT	4
+#define USBOTG_HWMODE_HOSTXCVR_MASK	(3 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TD_RD	(0 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TS_RD	(2 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TD_RS	(1 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TS_RS	(3 << 4)
+#define USBOTG_HWMODE_CRECFG_MASK	(3 << 0)
+#define USBOTG_HWMODE_CRECFG_HOST	(1 << 0)
+#define USBOTG_HWMODE_CRECFG_FUNC	(2 << 0)
+#define USBOTG_HWMODE_CRECFG_HNP	(3 << 0)
+
+#define USBOTG_CINT_STAT	0x04
+#define USBOTG_CINT_STEN	0x08
+#define USBOTG_ASHNPINT			(1 << 5)
+#define USBOTG_ASFCINT			(1 << 4)
+#define USBOTG_ASHCINT			(1 << 3)
+#define USBOTG_SHNPINT			(1 << 2)
+#define USBOTG_FCINT			(1 << 1)
+#define USBOTG_HCINT			(1 << 0)
+
+#define USBOTG_CLK_CTRL		0x0c
+#define USBOTG_CLK_CTRL_FUNC		(1 << 2)
+#define USBOTG_CLK_CTRL_HST		(1 << 1)
+#define USBOTG_CLK_CTRL_MAIN		(1 << 0)
+
+#define USBOTG_RST_CTRL		0x10
+#define USBOTG_RST_RSTI2C		(1 << 15)
+#define USBOTG_RST_RSTCTRL		(1 << 5)
+#define USBOTG_RST_RSTFC		(1 << 4)
+#define USBOTG_RST_RSTFSKE		(1 << 3)
+#define USBOTG_RST_RSTRH		(1 << 2)
+#define USBOTG_RST_RSTHSIE		(1 << 1)
+#define USBOTG_RST_RSTHC		(1 << 0)
+
+#define USBOTG_FRM_INTVL    	0x14
+#define USBOTG_FRM_REMAIN   	0x18
+#define USBOTG_HNP_CSR	    	0x1c
+#define USBOTG_HNP_ISR	    	0x2c
+#define USBOTG_HNP_IEN	    	0x30
+
+#define USBOTG_I2C_TXCVR_REG(x)	(0x100 + (x))
+#define USBOTG_I2C_XCVR_DEVAD		0x118
+#define USBOTG_I2C_SEQ_OP_REG		0x119
+#define USBOTG_I2C_SEQ_RD_STARTAD	0x11a
+#define USBOTG_I2C_OP_CTRL_REG	     	0x11b
+#define USBOTG_I2C_SCLK_TO_SCK_HPER  	0x11e
+#define USBOTG_I2C_MASTER_INT_REG    	0x11f
+
+#define USBH_HOST_CTRL		0x80
+#define USBH_HOST_CTRL_HCRESET			(1 << 31)
+#define USBH_HOST_CTRL_SCHDOVR(x)		((x) << 16)
+#define USBH_HOST_CTRL_RMTWUEN			(1 << 4)
+#define USBH_HOST_CTRL_HCUSBSTE_RESET		(0 << 2)
+#define USBH_HOST_CTRL_HCUSBSTE_RESUME		(1 << 2)
+#define USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL	(2 << 2)
+#define USBH_HOST_CTRL_HCUSBSTE_SUSPEND	(3 << 2)
+#define USBH_HOST_CTRL_CTLBLKSR_1		(0 << 0)
+#define USBH_HOST_CTRL_CTLBLKSR_2		(1 << 0)
+#define USBH_HOST_CTRL_CTLBLKSR_3		(2 << 0)
+#define USBH_HOST_CTRL_CTLBLKSR_4		(3 << 0)
+
+#define USBH_SYSISR		0x88
+#define USBH_SYSISR_PSCINT		(1 << 6)
+#define USBH_SYSISR_FMOFINT		(1 << 5)
+#define USBH_SYSISR_HERRINT		(1 << 4)
+#define USBH_SYSISR_RESDETINT		(1 << 3)
+#define USBH_SYSISR_SOFINT		(1 << 2)
+#define USBH_SYSISR_DONEINT		(1 << 1)
+#define USBH_SYSISR_SORINT		(1 << 0)
+
+#define USBH_SYSIEN	    	0x8c
+#define USBH_SYSIEN_PSCINT		(1 << 6)
+#define USBH_SYSIEN_FMOFINT		(1 << 5)
+#define USBH_SYSIEN_HERRINT		(1 << 4)
+#define USBH_SYSIEN_RESDETINT		(1 << 3)
+#define USBH_SYSIEN_SOFINT		(1 << 2)
+#define USBH_SYSIEN_DONEINT		(1 << 1)
+#define USBH_SYSIEN_SORINT		(1 << 0)
+
+#define USBH_XBUFSTAT	    	0x98
+#define USBH_YBUFSTAT	    	0x9c
+#define USBH_XYINTEN	    	0xa0
+#define USBH_XFILLSTAT	    	0xa8
+#define USBH_YFILLSTAT	    	0xac
+#define USBH_ETDENSET	    	0xc0
+#define USBH_ETDENCLR	    	0xc4
+#define USBH_IMMEDINT	    	0xcc
+#define USBH_ETDDONESTAT    	0xd0
+#define USBH_ETDDONEEN	    	0xd4
+#define USBH_FRMNUB	    	0xe0
+#define USBH_LSTHRESH	    	0xe4
+
+#define USBH_ROOTHUBA	    	0xe8
+#define USBH_ROOTHUBA_PWRTOGOOD_MASK	(0xff)
+#define USBH_ROOTHUBA_PWRTOGOOD_SHIFT	(24)
+#define USBH_ROOTHUBA_NOOVRCURP	(1 << 12)
+#define USBH_ROOTHUBA_OVRCURPM		(1 << 11)
+#define USBH_ROOTHUBA_DEVTYPE		(1 << 10)
+#define USBH_ROOTHUBA_PWRSWTMD		(1 << 9)
+#define USBH_ROOTHUBA_NOPWRSWT		(1 << 8)
+#define USBH_ROOTHUBA_NDNSTMPRT_MASK	(0xff)
+
+#define USBH_ROOTHUBB		0xec
+#define USBH_ROOTHUBB_PRTPWRCM(x)	(1 << ((x) + 16))
+#define USBH_ROOTHUBB_DEVREMOVE(x)	(1 << (x))
+
+#define USBH_ROOTSTAT		0xf0
+#define USBH_ROOTSTAT_CLRRMTWUE	(1 << 31)
+#define USBH_ROOTSTAT_OVRCURCHG	(1 << 17)
+#define USBH_ROOTSTAT_DEVCONWUE	(1 << 15)
+#define USBH_ROOTSTAT_OVRCURI		(1 << 1)
+#define USBH_ROOTSTAT_LOCPWRS		(1 << 0)
+
+#define USBH_PORTSTAT(x)	(0xf4 + ((x) * 4))
+#define USBH_PORTSTAT_PRTRSTSC		(1 << 20)
+#define USBH_PORTSTAT_OVRCURIC		(1 << 19)
+#define USBH_PORTSTAT_PRTSTATSC	(1 << 18)
+#define USBH_PORTSTAT_PRTENBLSC	(1 << 17)
+#define USBH_PORTSTAT_CONNECTSC	(1 << 16)
+#define USBH_PORTSTAT_LSDEVCON		(1 << 9)
+#define USBH_PORTSTAT_PRTPWRST		(1 << 8)
+#define USBH_PORTSTAT_PRTRSTST		(1 << 4)
+#define USBH_PORTSTAT_PRTOVRCURI	(1 << 3)
+#define USBH_PORTSTAT_PRTSUSPST	(1 << 2)
+#define USBH_PORTSTAT_PRTENABST	(1 << 1)
+#define USBH_PORTSTAT_CURCONST		(1 << 0)
+
+#define USB_DMAREV		0x800
+#define USB_DMAINTSTAT	    	0x804
+#define USB_DMAINTSTAT_EPERR		(1 << 1)
+#define USB_DMAINTSTAT_ETDERR		(1 << 0)
+
+#define USB_DMAINTEN	    	0x808
+#define USB_DMAINTEN_EPERRINTEN	(1 << 1)
+#define USB_DMAINTEN_ETDERRINTEN	(1 << 0)
+
+#define USB_ETDDMAERSTAT    	0x80c
+#define USB_EPDMAERSTAT	    	0x810
+#define USB_ETDDMAEN	    	0x820
+#define USB_EPDMAEN	    	0x824
+#define USB_ETDDMAXTEN	    	0x828
+#define USB_EPDMAXTEN	    	0x82c
+#define USB_ETDDMAENXYT	    	0x830
+#define USB_EPDMAENXYT	    	0x834
+#define USB_ETDDMABST4EN    	0x838
+#define USB_EPDMABST4EN	    	0x83c
+
+#define USB_MISCCONTROL	    	0x840
+#define USB_MISCCONTROL_ISOPREVFRM	(1 << 3)
+#define USB_MISCCONTROL_SKPRTRY	(1 << 2)
+#define USB_MISCCONTROL_ARBMODE	(1 << 1)
+#define USB_MISCCONTROL_FILTCC		(1 << 0)
+
+#define USB_ETDDMACHANLCLR  	0x848
+#define USB_EPDMACHANLCLR   	0x84c
+#define USB_ETDSMSA(x)	    	(0x900 + ((x) * 4))
+#define USB_EPSMSA(x)	    	(0x980 + ((x) * 4))
+#define USB_ETDDMABUFPTR(x) 	(0xa00 + ((x) * 4))
+#define USB_EPDMABUFPTR(x)  	(0xa80 + ((x) * 4))
+
+#define USB_ETD_DWORD(x, w)	(0x200 + ((x) * 16) + ((w) * 4))
+#define DW0_ADDRESS	0
+#define	DW0_ENDPNT	7
+#define	DW0_DIRECT	11
+#define	DW0_SPEED	13
+#define DW0_FORMAT	14
+#define DW0_MAXPKTSIZ	16
+#define DW0_HALTED	27
+#define	DW0_TOGCRY	28
+#define	DW0_SNDNAK	30
+
+#define DW1_XBUFSRTAD	0
+#define DW1_YBUFSRTAD	16
+
+#define DW2_RTRYDELAY	0
+#define DW2_POLINTERV	0
+#define DW2_STARTFRM	0
+#define DW2_RELPOLPOS	8
+#define DW2_DIRPID	16
+#define	DW2_BUFROUND	18
+#define DW2_DELAYINT	19
+#define DW2_DATATOG	22
+#define DW2_ERRORCNT	24
+#define	DW2_COMPCODE	28
+
+#define DW3_TOTBYECNT	0
+#define DW3_PKTLEN0	0
+#define DW3_COMPCODE0	12
+#define DW3_PKTLEN1	16
+#define DW3_BUFSIZE	21
+#define DW3_COMPCODE1	28
+
+#define USBCTRL		    	0x600
+#define USBCTRL_I2C_WU_INT_STAT	(1 << 27)
+#define USBCTRL_OTG_WU_INT_STAT	(1 << 26)
+#define USBCTRL_HOST_WU_INT_STAT	(1 << 25)
+#define USBCTRL_FNT_WU_INT_STAT	(1 << 24)
+#define USBCTRL_I2C_WU_INT_EN		(1 << 19)
+#define USBCTRL_OTG_WU_INT_EN		(1 << 18)
+#define USBCTRL_HOST_WU_INT_EN		(1 << 17)
+#define USBCTRL_FNT_WU_INT_EN		(1 << 16)
+#define USBCTRL_OTC_RCV_RXDP		(1 << 13)
+#define USBCTRL_HOST1_BYP_TLL		(1 << 12)
+#define USBCTRL_OTG_BYP_VAL(x)		((x) << 10)
+#define USBCTRL_HOST1_BYP_VAL(x)	((x) << 8)
+#define USBCTRL_OTG_PWR_MASK		(1 << 6)
+#define USBCTRL_HOST1_PWR_MASK		(1 << 5)
+#define USBCTRL_HOST2_PWR_MASK		(1 << 4)
+#define USBCTRL_USB_BYP			(1 << 2)
+#define USBCTRL_HOST1_TXEN_OE		(1 << 1)
+
+
+/* Values in TD blocks */
+#define TD_DIR_SETUP	    0
+#define TD_DIR_OUT	    1
+#define TD_DIR_IN	    2
+#define TD_FORMAT_CONTROL   0
+#define TD_FORMAT_ISO	    1
+#define TD_FORMAT_BULK	    2
+#define TD_FORMAT_INT	    3
+#define TD_TOGGLE_CARRY	    0
+#define TD_TOGGLE_DATA0	    2
+#define TD_TOGGLE_DATA1	    3
+
+/* control transfer states */
+#define US_CTRL_SETUP	2
+#define US_CTRL_DATA	1
+#define US_CTRL_ACK	0
+
+/* bulk transfer main state and 0-length packet */
+#define US_BULK		1
+#define US_BULK0	0
+
+/*ETD format description*/
+#define IMX_FMT_CTRL   0x0
+#define IMX_FMT_ISO    0x1
+#define IMX_FMT_BULK   0x2
+#define IMX_FMT_INT    0x3
+
+static char fmt_urb_to_etd[4] = {
+/*PIPE_ISOCHRONOUS*/ IMX_FMT_ISO,
+/*PIPE_INTERRUPT*/ IMX_FMT_INT,
+/*PIPE_CONTROL*/ IMX_FMT_CTRL,
+/*PIPE_BULK*/ IMX_FMT_BULK
+};
+
+/* condition (error) CC codes and mapping (OHCI like) */
+
+#define TD_CC_NOERROR		0x00
+#define TD_CC_CRC		0x01
+#define TD_CC_BITSTUFFING	0x02
+#define TD_CC_DATATOGGLEM	0x03
+#define TD_CC_STALL		0x04
+#define TD_DEVNOTRESP		0x05
+#define TD_PIDCHECKFAIL		0x06
+/*#define TD_UNEXPECTEDPID	0x07 - reserved, not active on MX2*/
+#define TD_DATAOVERRUN		0x08
+#define TD_DATAUNDERRUN		0x09
+#define TD_BUFFEROVERRUN	0x0C
+#define TD_BUFFERUNDERRUN	0x0D
+#define	TD_SCHEDULEOVERRUN	0x0E
+#define TD_NOTACCESSED		0x0F
+
+static const int cc_to_error[16] = {
+	/* No  Error  */ 0,
+	/* CRC Error  */ -EILSEQ,
+	/* Bit Stuff  */ -EPROTO,
+	/* Data Togg  */ -EILSEQ,
+	/* Stall      */ -EPIPE,
+	/* DevNotResp */ -ETIMEDOUT,
+	/* PIDCheck   */ -EPROTO,
+	/* UnExpPID   */ -EPROTO,
+	/* DataOver   */ -EOVERFLOW,
+	/* DataUnder  */ -EREMOTEIO,
+	/* (for hw)   */ -EIO,
+	/* (for hw)   */ -EIO,
+	/* BufferOver */ -ECOMM,
+	/* BuffUnder  */ -ENOSR,
+	/* (for HCD)  */ -ENOSPC,
+	/* (for HCD)  */ -EALREADY
+};
+
+/* HCD data associated with a usb core URB */
+struct urb_priv {
+	struct urb *urb;
+	struct usb_host_endpoint *ep;
+	int active;
+	int state;
+	struct td *isoc_td;
+	int isoc_remaining;
+	int isoc_status;
+};
+
+/* HCD data associated with a usb core endpoint */
+struct ep_priv {
+	struct usb_host_endpoint *ep;
+	struct list_head td_list;
+	struct list_head queue;
+	int etd[NUM_ISO_ETDS];
+	int waiting_etd;
+};
+
+/* isoc packet */
+struct td {
+	struct list_head list;
+	struct urb *urb;
+	struct usb_host_endpoint *ep;
+	dma_addr_t data;
+	unsigned long buf_addr;
+	int len;
+	int frame;
+	int isoc_index;
+};
+
+/* HCD data associated with a hardware ETD */
+struct etd_priv {
+	struct usb_host_endpoint *ep;
+	struct urb *urb;
+	struct td *td;
+	struct list_head queue;
+	dma_addr_t dma_handle;
+	int alloc;
+	int len;
+	int dmem_size;
+	int dmem_offset;
+	int active_count;
+#ifdef DEBUG
+	int activated_frame;
+	int disactivated_frame;
+	int last_int_frame;
+	int last_req_frame;
+	u32 submitted_dwords[4];
+#endif
+};
+
+/* Hardware data memory info */
+struct imx21_dmem_area {
+	struct usb_host_endpoint *ep;
+	unsigned int offset;
+	unsigned int size;
+	struct list_head list;
+};
+
+#ifdef DEBUG
+struct debug_usage_stats {
+	unsigned int value;
+	unsigned int maximum;
+};
+
+struct debug_stats {
+	unsigned long submitted;
+	unsigned long completed_ok;
+	unsigned long completed_failed;
+	unsigned long unlinked;
+	unsigned long queue_etd;
+	unsigned long queue_dmem;
+};
+
+struct debug_isoc_trace {
+	int schedule_frame;
+	int submit_frame;
+	int request_len;
+	int done_frame;
+	int done_len;
+	int cc;
+	struct td *td;
+};
+#endif
+
+/* HCD data structure */
+struct imx21 {
+	spinlock_t lock;
+	struct device *dev;
+	struct mx21_usbh_platform_data *pdata;
+	struct list_head dmem_list;
+	struct list_head queue_for_etd; /* eps queued due to etd shortage */
+	struct list_head queue_for_dmem; /* etds queued due to dmem shortage */
+	struct etd_priv etd[USB_NUM_ETD];
+	struct clk *clk;
+	void __iomem *regs;
+#ifdef DEBUG
+	struct dentry *debug_root;
+	struct debug_stats nonisoc_stats;
+	struct debug_stats isoc_stats;
+	struct debug_usage_stats etd_usage;
+	struct debug_usage_stats dmem_usage;
+	struct debug_isoc_trace isoc_trace[20];
+	struct debug_isoc_trace isoc_trace_failed[20];
+	unsigned long debug_unblocks;
+	int isoc_trace_index;
+	int isoc_trace_index_failed;
+#endif
+};
+
+#endif

drivers/usb/host/isp1362-hcd.c

···
 
 	/* avoid all allocations within spinlocks: request or endpoint */
 	if (!hep->hcpriv) {
-		ep = kcalloc(1, sizeof *ep, mem_flags);
+		ep = kzalloc(sizeof *ep, mem_flags);
 		if (!ep)
 			return -ENOMEM;
 	}
···
 	}
 	irq = irq_res->start;
 
-#ifdef CONFIG_USB_HCD_DMA
-	if (pdev->dev.dma_mask) {
-		struct resource *dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
-
-		if (!dma_res) {
-			retval = -ENODEV;
-			goto err1;
-		}
-		isp1362_hcd->data_dma = dma_res->start;
-		isp1362_hcd->max_dma_size = resource_len(dma_res);
-	}
-#else
 	if (pdev->dev.dma_mask) {
 		DBG(1, "won't do DMA");
 		retval = -ENODEV;
 		goto err1;
 	}
-#endif
 
 	if (!request_mem_region(addr->start, resource_len(addr), hcd_name)) {
 		retval = -EBUSY;

drivers/usb/host/isp1760-hcd.c

···
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <linux/mm.h>
 #include <asm/unaligned.h>
+#include <asm/cacheflush.h>
 
 #include "../core/hcd.h"
 #include "isp1760-hcd.h"
···
 	if (!urb->unlinked) {
 		if (status == -EINPROGRESS)
 			status = 0;
+	}
+
+	if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
+		void *ptr;
+		for (ptr = urb->transfer_buffer;
+		     ptr < urb->transfer_buffer + urb->transfer_buffer_length;
+		     ptr += PAGE_SIZE)
+			flush_dcache_page(virt_to_page(ptr));
 	}
 
 	/* complete() can reenter this HCD */

drivers/usb/host/isp1760-if.c

···
 	return 0;
 }
 
-static struct of_device_id of_isp1760_match[] = {
+static const struct of_device_id of_isp1760_match[] = {
 	{
 		.compatible = "nxp,usb-isp1760",
 	},

drivers/usb/host/ohci-da8xx.c

···
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * TI DA8xx (OMAP-L1x) Bus Glue
+ *
+ * Derived from: ohci-omap.c and ohci-s3c2410.c
+ * Copyright (C) 2008-2009 MontaVista Software, Inc. <[e-mail]>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <mach/da8xx.h>
+#include <mach/usb.h>
+
+#ifndef CONFIG_ARCH_DAVINCI_DA8XX
+#error "This file is DA8xx bus glue.  Define CONFIG_ARCH_DAVINCI_DA8XX."
+#endif
+
+#define CFGCHIP2	DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG)
+
+static struct clk *usb11_clk;
+static struct clk *usb20_clk;
+
+/* Over-current indicator change bitmask */
+static volatile u16 ocic_mask;
+
+static void ohci_da8xx_clock(int on)
+{
+	u32 cfgchip2;
+
+	cfgchip2 = __raw_readl(CFGCHIP2);
+	if (on) {
+		clk_enable(usb11_clk);
+
+		/*
+		 * If USB 1.1 reference clock is sourced from USB 2.0 PHY, we
+		 * need to enable the USB 2.0 module clocking, start its PHY,
+		 * and not allow it to stop the clock during USB 2.0 suspend.
+		 */
+		if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX)) {
+			clk_enable(usb20_clk);
+
+			cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN);
+			cfgchip2 |= CFGCHIP2_PHY_PLLON;
+			__raw_writel(cfgchip2, CFGCHIP2);
+
+			pr_info("Waiting for USB PHY clock good...\n");
+			while (!(__raw_readl(CFGCHIP2) & CFGCHIP2_PHYCLKGD))
+				cpu_relax();
+		}
+
+		/* Enable USB 1.1 PHY */
+		cfgchip2 |= CFGCHIP2_USB1SUSPENDM;
+	} else {
+		clk_disable(usb11_clk);
+		if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX))
+			clk_disable(usb20_clk);
+
+		/* Disable USB 1.1 PHY */
+		cfgchip2 &= ~CFGCHIP2_USB1SUSPENDM;
+	}
+	__raw_writel(cfgchip2, CFGCHIP2);
+}
+
+/*
+ * Handle the port over-current indicator change.
+ */
+static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
+				    unsigned port)
+{
+	ocic_mask |= 1 << port;
+
+	/* Once over-current is detected, the port needs to be powered down */
+	if (hub->get_oci(port) > 0)
+		hub->set_power(port, 0);
+}
+
+static int ohci_da8xx_init(struct usb_hcd *hcd)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev->platform_data;
+	struct ohci_hcd	*ohci		= hcd_to_ohci(hcd);
+	int result;
+	u32 rh_a;
+
+	dev_dbg(dev, "starting USB controller\n");
+
+	ohci_da8xx_clock(1);
+
+	/*
+	 * DA8xx only have 1 port connected to the pins but the HC root hub
+	 * register A reports 2 ports, thus we'll have to override it...
+	 */
+	ohci->num_ports = 1;
+
+	result = ohci_init(ohci);
+	if (result < 0)
+		return result;
+
+	/*
+	 * Since we're providing a board-specific root hub port power control
+	 * and over-current reporting, we have to override the HC root hub A
+	 * register's default value, so that ohci_hub_control() could return
+	 * the correct hub descriptor...
+	 */
+	rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
+	if (hub->set_power) {
+		rh_a &= ~RH_A_NPS;
+		rh_a |=  RH_A_PSM;
+	}
+	if (hub->get_oci) {
+		rh_a &= ~RH_A_NOCP;
+		rh_a |=  RH_A_OCPM;
+	}
+	rh_a &= ~RH_A_POTPGT;
+	rh_a |= hub->potpgt << 24;
+	ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
+
+	return result;
+}
+
+static void ohci_da8xx_stop(struct usb_hcd *hcd)
+{
+	ohci_stop(hcd);
+	ohci_da8xx_clock(0);
+}
+
+static int ohci_da8xx_start(struct usb_hcd *hcd)
+{
+	struct ohci_hcd	*ohci		= hcd_to_ohci(hcd);
+	int result;
+
+	result = ohci_run(ohci);
+	if (result < 0)
+		ohci_da8xx_stop(hcd);
+
+	return result;
+}
+
+/*
+ * Update the status data from the hub with the over-current indicator change.
+ */
+static int ohci_da8xx_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	int length		= ohci_hub_status_data(hcd, buf);
+
+	/* See if we have OCIC bit set on port 1 */
+	if (ocic_mask & (1 << 1)) {
+		dev_dbg(hcd->self.controller, "over-current indicator change "
+			"on port 1\n");
+
+		if (!length)
+			length = 1;
+
+		buf[0] |= 1 << 1;
+	}
+	return length;
+}
+
+/*
+ * Look at the control requests to the root hub and see if we need to override.
+ */
+static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+				  u16 wIndex, char *buf, u16 wLength)
+{
+	struct device *dev		= hcd->self.controller;
+	struct da8xx_ohci_root_hub *hub	= dev->platform_data;
+	int temp;
+
+	switch (typeReq) {
+	case GetPortStatus:
+		/* Check the port number */
+		if (wIndex != 1)
+			break;
+
+		dev_dbg(dev, "GetPortStatus(%u)\n", wIndex);
+
+		temp = roothub_portstatus(hcd_to_ohci(hcd), wIndex - 1);
+
+		/* The port power status (PPS) bit defaults to 1 */
+		if (hub->get_power && hub->get_power(wIndex) == 0)
+			temp &= ~RH_PS_PPS;
+
+		/* The port over-current indicator (POCI) bit is always 0 */
+		if (hub->get_oci && hub->get_oci(wIndex) > 0)
+			temp |=  RH_PS_POCI;
+
+		/* The over-current indicator change (OCIC) bit is 0 too */
+		if (ocic_mask & (1 << wIndex))
+			temp |=  RH_PS_OCIC;
+
+		put_unaligned(cpu_to_le32(temp), (__le32 *)buf);
+		return 0;
+	case SetPortFeature:
+		temp = 1;
+		goto check_port;
+	case ClearPortFeature:
+		temp = 0;
+
+check_port:
+		/* Check the port number */
+		if (wIndex != 1)
+			break;
+
+		switch (wValue) {
+		case USB_PORT_FEAT_POWER:
+			dev_dbg(dev, "%sPortFeature(%u): %s\n",
+				temp ? "Set" : "Clear", wIndex, "POWER");
+
+			if (!hub->set_power)
+				return -EPIPE;
+
+			return hub->set_power(wIndex, temp) ? -EPIPE : 0;
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+			dev_dbg(dev, "%sPortFeature(%u): %s\n",
+				temp ? "Set" : "Clear", wIndex,
+				"C_OVER_CURRENT");
+
+			if (temp)
+				ocic_mask |= 1 << wIndex;
+			else
+				ocic_mask &= ~(1 << wIndex);
+			return 0;
+		}
+	}
+
+	return ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
+}
+
+static const struct hc_driver ohci_da8xx_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "DA8xx OHCI",
+	.hcd_priv_size		= sizeof(struct ohci_hcd),
+
+	/*
+	 * generic hardware linkage
+	 */
+	.irq			= ohci_irq,
+	.flags			= HCD_USB11 | HCD_MEMORY,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.reset			= ohci_da8xx_init,
+	.start			= ohci_da8xx_start,
+	.stop			= ohci_da8xx_stop,
+	.shutdown		= ohci_shutdown,
+
+	/*
+	 * managing i/o requests and associated device resources
+	 */
+	.urb_enqueue		= ohci_urb_enqueue,
+	.urb_dequeue		= ohci_urb_dequeue,
+	.endpoint_disable	= ohci_endpoint_disable,
+
+	/*
+	 * scheduling support
+	 */
+	.get_frame_number	= ohci_get_frame,
+
+	/*
+	 * root hub support
+	 */
+	.hub_status_data	= ohci_da8xx_hub_status_data,
+	.hub_control		= ohci_da8xx_hub_control,
+
+#ifdef	CONFIG_PM
+	.bus_suspend		= ohci_bus_suspend,
+	.bus_resume		= ohci_bus_resume,
+#endif
+	.start_port_reset	= ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+
+/**
+ * usb_hcd_da8xx_probe - initialize DA8xx-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ */
+static int usb_hcd_da8xx_probe(const struct hc_driver *driver,
+			       struct platform_device *pdev)
+{
+	struct da8xx_ohci_root_hub *hub	= pdev->dev.platform_data;
+	struct usb_hcd	*hcd;
+	struct resource *mem;
+	int error, irq;
+
+	if (hub == NULL)
+		return -ENODEV;
+
+	usb11_clk = clk_get(&pdev->dev, "usb11");
+	if (IS_ERR(usb11_clk))
+		return PTR_ERR(usb11_clk);
+
+	usb20_clk = clk_get(&pdev->dev, "usb20");
+	if (IS_ERR(usb20_clk)) {
+		error = PTR_ERR(usb20_clk);
+		goto err0;
+	}
+
+	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+	if (!hcd) {
+		error = -ENOMEM;
+		goto err1;
+	}
+
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mem) {
+		error = -ENODEV;
+		goto err2;
+	}
+	hcd->rsrc_start = mem->start;
+	hcd->rsrc_len = mem->end - mem->start + 1;
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		dev_dbg(&pdev->dev, "request_mem_region failed\n");
+		error = -EBUSY;
+		goto err2;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (!hcd->regs) {
+		dev_err(&pdev->dev, "ioremap failed\n");
+		error = -ENOMEM;
+		goto err3;
+	}
+
+	ohci_hcd_init(hcd_to_ohci(hcd));
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		error = -ENODEV;
+		goto err4;
+	}
+	error = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+	if (error)
+		goto err4;
+
+	if (hub->ocic_notify) {
+		error = hub->ocic_notify(ohci_da8xx_ocic_handler);
+		if (!error)
+			return 0;
+	}
+
+	usb_remove_hcd(hcd);
+err4:
+	iounmap(hcd->regs);
+err3:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err2:
+	usb_put_hcd(hcd);
+err1:
+	clk_put(usb20_clk);
+err0:
+	clk_put(usb11_clk);
+	return error;
+}
+
+/**
+ * usb_hcd_da8xx_remove - shutdown processing for DA8xx-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_da8xx_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ */
+static inline void
+usb_hcd_da8xx_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+{
+	struct da8xx_ohci_root_hub *hub	= pdev->dev.platform_data;
+
+	hub->ocic_notify(NULL);
+	usb_remove_hcd(hcd);
+	iounmap(hcd->regs);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+	clk_put(usb20_clk);
+	clk_put(usb11_clk);
+}
+
+static int ohci_hcd_da8xx_drv_probe(struct platform_device *dev)
+{
+	return usb_hcd_da8xx_probe(&ohci_da8xx_hc_driver, dev);
+}
+
+static int ohci_hcd_da8xx_drv_remove(struct platform_device *dev)
+{
+	struct usb_hcd	*hcd = platform_get_drvdata(dev);
+
+	usb_hcd_da8xx_remove(hcd, dev);
+	platform_set_drvdata(dev, NULL);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int ohci_da8xx_suspend(struct platform_device *dev, pm_message_t message)
+{
+	struct usb_hcd	*hcd	= platform_get_drvdata(dev);
+	struct ohci_hcd	*ohci	= hcd_to_ohci(hcd);
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	ohci_da8xx_clock(0);
+	hcd->state = HC_STATE_SUSPENDED;
+	dev->dev.power.power_state = PMSG_SUSPEND;
+	return 0;
+}
+
+static int ohci_da8xx_resume(struct platform_device *dev)
+{
+	struct usb_hcd	*hcd	= platform_get_drvdata(dev);
+	struct ohci_hcd	*ohci	= hcd_to_ohci(hcd);
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	ohci_da8xx_clock(1);
+	dev->dev.power.power_state = PMSG_ON;
+	usb_hcd_resume_root_hub(hcd);
+	return 0;
+}
+#endif
+
+/*
+ * Driver definition to register with platform structure.
+ */
+static struct platform_driver ohci_hcd_da8xx_driver = {
+	.probe		= ohci_hcd_da8xx_drv_probe,
+	.remove		= ohci_hcd_da8xx_drv_remove,
+	.shutdown 	= usb_hcd_platform_shutdown,
+#ifdef	CONFIG_PM
+	.suspend	= ohci_da8xx_suspend,
+	.resume		= ohci_da8xx_resume,
+#endif
+	.driver		= {
+		.owner	= THIS_MODULE,
+		.name	= "ohci",
+	},
+};

drivers/usb/host/ohci-dbg.c

···
 		int i, len;
 
 		if (usb_pipecontrol (pipe)) {
-			printk (KERN_DEBUG __FILE__ ": setup(8):");
+			printk (KERN_DEBUG "%s: setup(8):", __FILE__);
 			for (i = 0; i < 8 ; i++)
 				printk (" %02x", ((__u8 *) urb->setup_packet) [i]);
 			printk ("\n");
 		}
 		if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
-			printk (KERN_DEBUG __FILE__ ": data(%d/%d):",
+			printk (KERN_DEBUG "%s: data(%d/%d):", __FILE__,
 				urb->actual_length,
 				urb->transfer_buffer_length);
 			len = usb_pipeout (pipe)?

drivers/usb/host/ohci-hcd.c

···
 #define PLATFORM_DRIVER		usb_hcd_pnx4008_driver
 #endif
 
+#ifdef CONFIG_ARCH_DAVINCI_DA8XX
+#include "ohci-da8xx.c"
+#define PLATFORM_DRIVER		ohci_hcd_da8xx_driver
+#endif
+
 #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
     defined(CONFIG_CPU_SUBTYPE_SH7721) || \
     defined(CONFIG_CPU_SUBTYPE_SH7763) || \

drivers/usb/host/ohci-lh7a404.c

···
 
 static void lh7a404_start_hc(struct platform_device *dev)
 {
-	printk(KERN_DEBUG __FILE__
-	       ": starting LH7A404 OHCI USB Controller\n");
+	printk(KERN_DEBUG "%s: starting LH7A404 OHCI USB Controller\n",
+	       __FILE__);
 
 	/*
 	 * Now, carefully enable the USB clock, and take
···
 	udelay(1000);
 	USBH_CMDSTATUS = OHCI_HCR;
 
-	printk(KERN_DEBUG __FILE__
-		   ": Clock to USB host has been enabled \n");
+	printk(KERN_DEBUG "%s: Clock to USB host has been enabled \n", __FILE__);
 }
 
 static void lh7a404_stop_hc(struct platform_device *dev)
 {
-	printk(KERN_DEBUG __FILE__
-	       ": stopping LH7A404 OHCI USB Controller\n");
+	printk(KERN_DEBUG "%s: stopping LH7A404 OHCI USB Controller\n",
+	       __FILE__);
 
 	CSC_PWRCNT &= ~CSC_PWRCNT_USBH_EN; /* Disable clock */
 }

drivers/usb/host/ohci-pnx4008.c

···
 	}
 	i2c_adap = i2c_get_adapter(2);
 	memset(&i2c_info, 0, sizeof(struct i2c_board_info));
-	strlcpy(i2c_info.name, "isp1301_pnx", I2C_NAME_SIZE);
+	strlcpy(i2c_info.type, "isp1301_pnx", I2C_NAME_SIZE);
 	isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info,
 						   normal_i2c);
 	i2c_put_adapter(i2c_adap);
···
 out2:
 	clk_put(usb_clk);
 out1:
-	i2c_unregister_client(isp1301_i2c_client);
+	i2c_unregister_device(isp1301_i2c_client);
 	isp1301_i2c_client = NULL;
 out_i2c_driver:
 	i2c_del_driver(&isp1301_driver);
···
 	pnx4008_unset_usb_bits();
 	clk_disable(usb_clk);
 	clk_put(usb_clk);
-	i2c_unregister_client(isp1301_i2c_client);
+	i2c_unregister_device(isp1301_i2c_client);
 	isp1301_i2c_client = NULL;
 	i2c_del_driver(&isp1301_driver);
 

drivers/usb/host/ohci-ppc-of.c

···
 	hcd->rsrc_len = res.end - res.start + 1;
 
 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-		printk(KERN_ERR __FILE__ ": request_mem_region failed\n");
+		printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_rmr;
 	}
 
 	irq = irq_of_parse_and_map(dn, 0);
 	if (irq == NO_IRQ) {
-		printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+		printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
 		rv = -EBUSY;
 		goto err_irq;
 	}
 
 	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 	if (!hcd->regs) {
-		printk(KERN_ERR __FILE__ ": ioremap failed\n");
+		printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
 		rv = -ENOMEM;
 		goto err_ioremap;
 	}
···
 			} else
 				release_mem_region(res.start, 0x4);
 		} else
-		    pr_debug(__FILE__ ": cannot get ehci offset from fdt\n");
+			pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
 	}
 
 	iounmap(hcd->regs);
···
 }
 
 
-static struct of_device_id ohci_hcd_ppc_of_match[] = {
+static const struct of_device_id ohci_hcd_ppc_of_match[] = {
 #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE
 	{
 		.name = "usb",

drivers/usb/host/ohci-ppc-soc.c

···
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res) {
-		pr_debug(__FILE__ ": no irq\n");
+		pr_debug("%s: no irq\n", __FILE__);
 		return -ENODEV;
 	}
 	irq = res->start;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
-		pr_debug(__FILE__ ": no reg addr\n");
+		pr_debug("%s: no reg addr\n", __FILE__);
 		return -ENODEV;
 	}
 
···
 	hcd->rsrc_len = res->end - res->start + 1;
 
 	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-		pr_debug(__FILE__ ": request_mem_region failed\n");
+		pr_debug("%s: request_mem_region failed\n", __FILE__);
 		retval = -EBUSY;
 		goto err1;
 	}
 
 	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 	if (!hcd->regs) {
-		pr_debug(__FILE__ ": ioremap failed\n");
+		pr_debug("%s: ioremap failed\n", __FILE__);
 		retval = -ENOMEM;
 		goto err2;
 	}

drivers/usb/host/ohci-sa1111.c

···
 {
 	unsigned int usb_rst = 0;
 
-	printk(KERN_DEBUG __FILE__
-	       ": starting SA-1111 OHCI USB Controller\n");
+	printk(KERN_DEBUG "%s: starting SA-1111 OHCI USB Controller\n",
+	       __FILE__);
 
 #ifdef CONFIG_SA1100_BADGE4
 	if (machine_is_badge4()) {
···
 static void sa1111_stop_hc(struct sa1111_dev *dev)
 {
 	unsigned int usb_rst;
-	printk(KERN_DEBUG __FILE__
-	       ": stopping SA-1111 OHCI USB Controller\n");
+	printk(KERN_DEBUG "%s: stopping SA-1111 OHCI USB Controller\n",
+	       __FILE__);
 
 	/*
 	 * Put the USB host controller into reset.

drivers/usb/host/sl811-hcd.c

···
 #include <asm/irq.h>
 #include <asm/system.h>
 #include <asm/byteorder.h>
+#include <asm/unaligned.h>
 
 #include "../core/hcd.h"
 #include "sl811.h"
···
 		sl811h_hub_descriptor(sl811, (struct usb_hub_descriptor *) buf);
 		break;
 	case GetHubStatus:
-		*(__le32 *) buf = cpu_to_le32(0);
+		put_unaligned_le32(0, buf);
 		break;
 	case GetPortStatus:
 		if (wIndex != 1)
 			goto error;
-		*(__le32 *) buf = cpu_to_le32(sl811->port1);
+		put_unaligned_le32(sl811->port1, buf);
 
 #ifndef	VERBOSE
 	if (*(u16*)(buf+2))	/* only if wPortChange is interesting */

drivers/usb/host/uhci-hcd.c

···
 		uhci_hc_died(uhci);
 	uhci_scan_schedule(uhci);
 	spin_unlock_irq(&uhci->lock);
+	synchronize_irq(hcd->irq);
 
 	del_timer_sync(&uhci->fsbr_timer);
 	release_uhci(uhci);

drivers/usb/host/xhci-dbg.c

···
 	}
 }
 
+char *xhci_get_slot_state(struct xhci_hcd *xhci,
+		struct xhci_container_ctx *ctx)
+{
+	struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx);
+
+	switch (GET_SLOT_STATE(slot_ctx->dev_state)) {
+	case 0:
+		return "enabled/disabled";
+	case 1:
+		return "default";
+	case 2:
+		return "addressed";
+	case 3:
+		return "configured";
+	default:
+		return "reserved";
+	}
+}
+
 void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx)
 {
 	/* Fields are 32 bits wide, DMA addresses are in bytes */

drivers/usb/host/xhci-ext-caps.h

···
 
 	next = readl(base + ext_offset);
 
-	if (ext_offset == XHCI_HCC_PARAMS_OFFSET)
+	if (ext_offset == XHCI_HCC_PARAMS_OFFSET) {
 		/* Find the first extended capability */
 		next = XHCI_HCC_EXT_CAPS(next);
-	else
+		ext_offset = 0;
+	} else {
 		/* Find the next extended capability */
 		next = XHCI_EXT_CAPS_NEXT(next);
+	}
+
 	if (!next)
 		return 0;
 	/*

drivers/usb/host/xhci-hcd.c

···
 	 * for usb_set_interface() and usb_set_configuration() claim).
 	 */
 	if (xhci_endpoint_init(xhci, xhci->devs[udev->slot_id],
-				udev, ep, GFP_KERNEL) < 0) {
+				udev, ep, GFP_NOIO) < 0) {
 		dev_dbg(&udev->dev, "%s - could not initialize ep %#x\n",
 				__func__, ep->desc.bEndpointAddress);
 		return -ENOMEM;
···
 		ret = xhci_queue_evaluate_context(xhci, in_ctx->dma,
 				udev->slot_id);
 	if (ret < 0) {
+		if (command)
+			list_del(&command->cmd_list);
 		spin_unlock_irqrestore(&xhci->lock, flags);
 		xhci_dbg(xhci, "FIXME allocate a new ring segment\n");
 		return -ENOMEM;
···
 	xhci_zero_in_ctx(xhci, virt_dev);
 	/* Install new rings and free or cache any old rings */
 	for (i = 1; i < 31; ++i) {
-		int rings_cached;
-
 		if (!virt_dev->eps[i].new_ring)
 			continue;
 		/* Only cache or free the old ring if it exists.
 		 * It may not if this is the first add of an endpoint.
 		 */
 		if (virt_dev->eps[i].ring) {
-			rings_cached = virt_dev->num_rings_cached;
-			if (rings_cached < XHCI_MAX_RINGS_CACHED) {
-				virt_dev->num_rings_cached++;
-				rings_cached = virt_dev->num_rings_cached;
-				virt_dev->ring_cache[rings_cached] =
-					virt_dev->eps[i].ring;
-				xhci_dbg(xhci, "Cached old ring, "
-						"%d ring%s cached\n",
-						rings_cached,
-						(rings_cached > 1) ? "s" : "");
-			} else {
-				xhci_ring_free(xhci, virt_dev->eps[i].ring);
-				xhci_dbg(xhci, "Ring cache full (%d rings), "
-						"freeing ring\n",
-						virt_dev->num_rings_cached);
-			}
+			xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
 		}
 		virt_dev->eps[i].ring = virt_dev->eps[i].new_ring;
 		virt_dev->eps[i].new_ring = NULL;
···
 
 	if (ret)
 		xhci_warn(xhci, "FIXME allocate a new ring segment\n");
+}
+
+/*
+ * This submits a Reset Device Command, which will set the device state to 0,
+ * set the device address to 0, and disable all the endpoints except the default
+ * control endpoint.  The USB core should come back and call
+ * xhci_address_device(), and then re-set up the configuration.  If this is
+ * called because of a usb_reset_and_verify_device(), then the old alternate
+ * settings will be re-installed through the normal bandwidth allocation
+ * functions.
+ *
+ * Wait for the Reset Device command to finish.  Remove all structures
+ * associated with the endpoints that were disabled.  Clear the input device
+ * structure?  Cache the rings?  Reset the control endpoint 0 max packet size?
+ */
+int xhci_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
+{
+	int ret, i;
+	unsigned long flags;
+	struct xhci_hcd *xhci;
+	unsigned int slot_id;
+	struct xhci_virt_device *virt_dev;
+	struct xhci_command *reset_device_cmd;
+	int timeleft;
+	int last_freed_endpoint;
+
+	ret = xhci_check_args(hcd, udev, NULL, 0, __func__);
+	if (ret <= 0)
+		return ret;
+	xhci = hcd_to_xhci(hcd);
+	slot_id = udev->slot_id;
+	virt_dev = xhci->devs[slot_id];
+	if (!virt_dev) {
+		xhci_dbg(xhci, "%s called with invalid slot ID %u\n",
+				__func__, slot_id);
+		return -EINVAL;
+	}
+
+	xhci_dbg(xhci, "Resetting device with slot ID %u\n", slot_id);
+	/* Allocate the command structure that holds the struct completion.
+	 * Assume we're in process context, since the normal device reset
+	 * process has to wait for the device anyway.  Storage devices are
+	 * reset as part of error handling, so use GFP_NOIO instead of
+	 * GFP_KERNEL.
+	 */
+	reset_device_cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO);
+	if (!reset_device_cmd) {
+		xhci_dbg(xhci, "Couldn't allocate command structure.\n");
+		return -ENOMEM;
+	}
+
+	/* Attempt to submit the Reset Device command to the command ring */
+	spin_lock_irqsave(&xhci->lock, flags);
+	reset_device_cmd->command_trb = xhci->cmd_ring->enqueue;
+	list_add_tail(&reset_device_cmd->cmd_list, &virt_dev->cmd_list);
+	ret = xhci_queue_reset_device(xhci, slot_id);
+	if (ret) {
+		xhci_dbg(xhci, "FIXME: allocate a command ring segment\n");
+		list_del(&reset_device_cmd->cmd_list);
+		spin_unlock_irqrestore(&xhci->lock, flags);
+		goto command_cleanup;
+	}
+	xhci_ring_cmd_db(xhci);
+	spin_unlock_irqrestore(&xhci->lock, flags);
+
+	/* Wait for the Reset Device command to finish */
+	timeleft = wait_for_completion_interruptible_timeout(
+			reset_device_cmd->completion,
+			USB_CTRL_SET_TIMEOUT);
+	if (timeleft <= 0) {
+		xhci_warn(xhci, "%s while waiting for reset device command\n",
+				timeleft == 0 ? "Timeout" : "Signal");
+		spin_lock_irqsave(&xhci->lock, flags);
+		/* The timeout might have raced with the event ring handler, so
+		 * only delete from the list if the item isn't poisoned.
+		 */
+		if (reset_device_cmd->cmd_list.next != LIST_POISON1)
+			list_del(&reset_device_cmd->cmd_list);
+		spin_unlock_irqrestore(&xhci->lock, flags);
+		ret = -ETIME;
+		goto command_cleanup;
+	}
+
+	/* The Reset Device command can't fail, according to the 0.95/0.96 spec,
+	 * unless we tried to reset a slot ID that wasn't enabled,
+	 * or the device wasn't in the addressed or configured state.
+	 */
+	ret = reset_device_cmd->status;
+	switch (ret) {
+	case COMP_EBADSLT: /* 0.95 completion code for bad slot ID */
+	case COMP_CTX_STATE: /* 0.96 completion code for same thing */
+		xhci_info(xhci, "Can't reset device (slot ID %u) in %s state\n",
+				slot_id,
+				xhci_get_slot_state(xhci, virt_dev->out_ctx));
+		xhci_info(xhci, "Not freeing device rings.\n");
+		/* Don't treat this as an error.  May change my mind later. */
+		ret = 0;
+		goto command_cleanup;
+	case COMP_SUCCESS:
+		xhci_dbg(xhci, "Successful reset device command.\n");
+		break;
+	default:
+		if (xhci_is_vendor_info_code(xhci, ret))
+			break;
+		xhci_warn(xhci, "Unknown completion code %u for "
+				"reset device command.\n", ret);
+		ret = -EINVAL;
+		goto command_cleanup;
+	}
+
+	/* Everything but endpoint 0 is disabled, so free or cache the rings. */
+	last_freed_endpoint = 1;
+	for (i = 1; i < 31; ++i) {
+		if (!virt_dev->eps[i].ring)
+			continue;
+		xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
+		last_freed_endpoint = i;
+	}
+	xhci_dbg(xhci, "Output context after successful reset device cmd:\n");
+	xhci_dbg_ctx(xhci, virt_dev->out_ctx, last_freed_endpoint);
+	ret = 0;
+
+command_cleanup:
+	xhci_free_command(xhci, reset_device_cmd);
+	return ret;
 }
 
 /*
···
 		xhci_warn(xhci, "Cannot update hub desc for unknown device.\n");
 		return -EINVAL;
 	}
-	config_cmd = xhci_alloc_command(xhci, true, mem_flags);
+	config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
 	if (!config_cmd) {
 		xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
 		return -ENOMEM;

drivers/usb/host/xhci-hub.c

···
 	return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS);
 }
 
+static void xhci_disable_port(struct xhci_hcd *xhci, u16 wIndex,
+		u32 __iomem *addr, u32 port_status)
+{
+	/* Write 1 to disable the port */
+	xhci_writel(xhci, port_status | PORT_PE, addr);
+	port_status = xhci_readl(xhci, addr);
+	xhci_dbg(xhci, "disable port, actual port %d status  = 0x%x\n",
+			wIndex, port_status);
+}
+
+static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue,
+		u16 wIndex, u32 __iomem *addr, u32 port_status)
+{
+	char *port_change_bit;
+	u32 status;
+
+	switch (wValue) {
+	case USB_PORT_FEAT_C_RESET:
+		status = PORT_RC;
+		port_change_bit = "reset";
+		break;
+	case USB_PORT_FEAT_C_CONNECTION:
+		status = PORT_CSC;
+		port_change_bit = "connect";
+		break;
+	case USB_PORT_FEAT_C_OVER_CURRENT:
+		status = PORT_OCC;
+		port_change_bit = "over-current";
+		break;
+	case USB_PORT_FEAT_C_ENABLE:
+		status = PORT_PEC;
+		port_change_bit = "enable/disable";
+		break;
+	default:
+		/* Should never happen */
+		return;
+	}
+	/* Change bits are all write 1 to clear */
+	xhci_writel(xhci, port_status | status, addr);
+	port_status = xhci_readl(xhci, addr);
+	xhci_dbg(xhci, "clear port %s change, actual port %d status  = 0x%x\n",
+			port_change_bit, wIndex, port_status);
+}
+
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		u16 wIndex, char *buf, u16 wLength)
 {
···
 	u32 temp, status;
 	int retval = 0;
 	u32 __iomem *addr;
-	char *port_change_bit;
 
 	ports = HCS_MAX_PORTS(xhci->hcs_params1);
 
···
 		temp = xhci_port_state_to_neutral(temp);
 		switch (wValue) {
 		case USB_PORT_FEAT_C_RESET:
-			status = PORT_RC;
-			port_change_bit = "reset";
-			break;
 		case USB_PORT_FEAT_C_CONNECTION:
-			status = PORT_CSC;
-			port_change_bit = "connect";
-			break;
 		case USB_PORT_FEAT_C_OVER_CURRENT:
-			status = PORT_OCC;
-			port_change_bit = "over-current";
+		case USB_PORT_FEAT_C_ENABLE:
+			xhci_clear_port_change_bit(xhci, wValue, wIndex,
+					addr, temp);
+			break;
+		case USB_PORT_FEAT_ENABLE:
+			xhci_disable_port(xhci, wIndex, addr, temp);
 			break;
 		default:
 			goto error;
 		}
-		/* Change bits are all write 1 to clear */
-		xhci_writel(xhci, temp | status, addr);
-		temp = xhci_readl(xhci, addr);
-		xhci_dbg(xhci, "clear port %s change, actual port %d status  = 0x%x\n",
-				port_change_bit, wIndex, temp);
-		temp = xhci_readl(xhci, addr); /* unblock any posted writes */
 		break;
 	default:
 error:

drivers/usb/host/xhci-mem.c

···
 	return 0;
 }
 
+void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
+		struct xhci_virt_device *virt_dev,
+		unsigned int ep_index)
+{
+	int rings_cached;
+
+	rings_cached = virt_dev->num_rings_cached;
+	if (rings_cached < XHCI_MAX_RINGS_CACHED) {
+		virt_dev->num_rings_cached++;
+		rings_cached = virt_dev->num_rings_cached;
+		virt_dev->ring_cache[rings_cached] =
+			virt_dev->eps[ep_index].ring;
+		xhci_dbg(xhci, "Cached old ring, "
+				"%d ring%s cached\n",
+				rings_cached,
+				(rings_cached > 1) ? "s" : "");
+	} else {
+		xhci_ring_free(xhci, virt_dev->eps[ep_index].ring);
+		xhci_dbg(xhci, "Ring cache full (%d rings), "
+				"freeing ring\n",
+				virt_dev->num_rings_cached);
+	}
+	virt_dev->eps[ep_index].ring = NULL;
+}
+
 /* Zero an endpoint ring (except for link TRBs) and move the enqueue and dequeue
  * pointers to the beginning of the ring.
  */
···
 void xhci_free_container_ctx(struct xhci_hcd *xhci,
 			     struct xhci_container_ctx *ctx)
 {
+	if (!ctx)
+		return;
 	dma_pool_free(xhci->device_pool, ctx->bytes, ctx->dma);
 	kfree(ctx);
 }
···
 	case USB_SPEED_LOW:
 		slot_ctx->dev_info |= (u32) SLOT_SPEED_LS;
 		break;
-	case USB_SPEED_VARIABLE:
+	case USB_SPEED_WIRELESS:
 		xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
 		return -EINVAL;
 		break;
···
 	case USB_SPEED_LOW:
 		ep0_ctx->ep_info2 |= MAX_PACKET(8);
 		break;
-	case USB_SPEED_VARIABLE:
+	case USB_SPEED_WIRELESS:
 		xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
 		return -EINVAL;
 		break;
···
 }
 
 struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
-		bool allocate_completion, gfp_t mem_flags)
+		bool allocate_in_ctx, bool allocate_completion,
+		gfp_t mem_flags)
 {
 	struct xhci_command *command;
 
···
 	if (!command)
 		return NULL;
 
-	command->in_ctx =
-		xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, mem_flags);
-	if (!command->in_ctx) {
-		kfree(command);
-		return NULL;
+	if (allocate_in_ctx) {
+		command->in_ctx =
+			xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT,
+					mem_flags);
+		if (!command->in_ctx) {
+			kfree(command);
+			return NULL;
+		}
 	}
 
 	if (allocate_completion) {

drivers/usb/host/xhci-pci.c

···
 	.reset_bandwidth =	xhci_reset_bandwidth,
 	.address_device =	xhci_address_device,
 	.update_hub_device =	xhci_update_hub_device,
+	.reset_device =		xhci_reset_device,
 
 	/*
 	 * scheduling support

drivers/usb/host/xhci-ring.c

···
 	case TRB_TYPE(TRB_RESET_EP):
 		handle_reset_ep_completion(xhci, event, xhci->cmd_ring->dequeue);
 		break;
+	case TRB_TYPE(TRB_RESET_DEV):
+		xhci_dbg(xhci, "Completed reset device command.\n");
+		slot_id = TRB_TO_SLOT_ID(
+				xhci->cmd_ring->dequeue->generic.field[3]);
+		virt_dev = xhci->devs[slot_id];
+		if (virt_dev)
+			handle_cmd_in_cmd_wait_list(xhci, virt_dev, event);
+		else
+			xhci_warn(xhci, "Reset device command completion "
+					"for disabled slot %u\n", slot_id);
+		break;
 	default:
 		/* Skip over unknown commands on the event ring */
 		xhci->error_bitmask |= 1 << 6;
···
 	return 0;
 }
 
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code)
+{
+	if (trb_comp_code >= 224 && trb_comp_code <= 255) {
+		/* Vendor defined "informational" completion code,
+		 * treat as not-an-error.
+		 */
+		xhci_dbg(xhci, "Vendor defined info completion code %u\n",
+				trb_comp_code);
+		xhci_dbg(xhci, "Treating code as success.\n");
+		return 1;
+	}
+	return 0;
+}
+
 /*
  * If this function returns an error condition, it means it got a Transfer
  * event with a corrupted Slot ID, Endpoint ID, or TRB DMA address.
···
 		status = -ENOSR;
 		break;
 	default:
-		if (trb_comp_code >= 224 && trb_comp_code <= 255) {
-			/* Vendor defined "informational" completion code,
-			 * treat as not-an-error.
-			 */
-			xhci_dbg(xhci, "Vendor defined info completion code %u\n",
-					trb_comp_code);
-			xhci_dbg(xhci, "Treating code as success.\n");
+		if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
 			status = 0;
 			break;
 		}
···
 	return queue_command(xhci, lower_32_bits(in_ctx_ptr),
 			upper_32_bits(in_ctx_ptr), 0,
 			TRB_TYPE(TRB_ADDR_DEV) | SLOT_ID_FOR_TRB(slot_id),
+			false);
+}
+
+/* Queue a reset device command TRB */
+int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id)
+{
+	return queue_command(xhci, 0, 0, 0,
+			TRB_TYPE(TRB_RESET_DEV) | SLOT_ID_FOR_TRB(slot_id),
 			false);
 }
 

drivers/usb/host/xhci.h

···
 void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
 void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring);
 void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);
+char *xhci_get_slot_state(struct xhci_hcd *xhci,
+		struct xhci_container_ctx *ctx);
 
 /* xHCI memory management */
 void xhci_mem_cleanup(struct xhci_hcd *xhci);
···
 		struct usb_device *udev, struct usb_host_endpoint *ep,
 		gfp_t mem_flags);
 void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring);
+void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
+		struct xhci_virt_device *virt_dev,
+		unsigned int ep_index);
 struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
-		bool allocate_completion, gfp_t mem_flags);
+		bool allocate_in_ctx, bool allocate_completion,
+		gfp_t mem_flags);
 void xhci_free_command(struct xhci_hcd *xhci,
 		struct xhci_command *command);
 
···
 int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
 int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
 void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
+int xhci_reset_device(struct usb_hcd *hcd, struct usb_device *udev);
 int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
 void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
 
···
 struct xhci_segment *trb_in_td(struct xhci_segment *start_seg,
 		union xhci_trb *start_trb, union xhci_trb *end_trb,
 		dma_addr_t suspect_dma);
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code);
 void xhci_ring_cmd_db(struct xhci_hcd *xhci);
 void *xhci_setup_one_noop(struct xhci_hcd *xhci);
 void xhci_handle_event(struct xhci_hcd *xhci);
···
 		u32 slot_id);
 int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id,
 		unsigned int ep_index);
+int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id);
 void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
 		unsigned int slot_id, unsigned int ep_index,
 		struct xhci_td *cur_td, struct xhci_dequeue_state *state);

drivers/usb/image/mdc800.c

···
 
 
 
-static struct usb_device_id mdc800_table [] = {
+static const struct usb_device_id mdc800_table[] = {
 	{ USB_DEVICE(MDC800_VENDOR_ID, MDC800_PRODUCT_ID) },
 	{ }						/* Terminating entry */
 };

drivers/usb/image/microtek.c

···
 			 const struct usb_device_id *id);
 static void mts_usb_disconnect(struct usb_interface *intf);
 
-static struct usb_device_id mts_usb_ids [];
+static const struct usb_device_id mts_usb_ids[];
 
 static struct usb_driver mts_usb_driver = {
 	.name =		"microtekX6",
···
 /* The entries of microtek_table must correspond, line-by-line to
    the entries of mts_supported_products[]. */
 
-static struct usb_device_id mts_usb_ids [] =
+static const struct usb_device_id mts_usb_ids[] =
 {
 	{ USB_DEVICE(0x4ce, 0x0300) },
 	{ USB_DEVICE(0x5da, 0x0094) },

drivers/usb/misc/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called usblcd.
 
-config USB_BERRY_CHARGE
-	tristate "USB BlackBerry recharge support"
-	depends on USB
-	help
-	  Say Y here if you want to connect a BlackBerry device to your
-	  computer's USB port and have it automatically switch to "recharge"
-	  mode.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called berry_charge.
-
 config USB_LED
 	tristate "USB LED driver support"
 	depends on USB
···
 	  The firmware for this driver must be extracted from the MacOS
 	  driver beforehand. Tools for doing so are available at
 	  http://bersace03.free.fr
-
-config USB_VST
-	tristate "USB VST driver"
-	depends on USB
-	help
-	  This driver is intended for Vernier Software Technologies
-	  bulk usb devices such as their Ocean-Optics spectrometers or
-	  Labquest.
-	  It is a bulk channel driver with configurable read and write
-	  timeouts.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called vstusb.
-
 

drivers/usb/misc/Makefile

···
 
 obj-$(CONFIG_USB_ADUTUX)	+= adutux.o
 obj-$(CONFIG_USB_APPLEDISPLAY)	+= appledisplay.o
-obj-$(CONFIG_USB_BERRY_CHARGE)	+= berry_charge.o
 obj-$(CONFIG_USB_CYPRESS_CY7C63)+= cypress_cy7c63.o
 obj-$(CONFIG_USB_CYTHERM)	+= cytherm.o
 obj-$(CONFIG_USB_EMI26)		+= emi26.o
···
 obj-$(CONFIG_USB_TRANCEVIBRATOR)	+= trancevibrator.o
 obj-$(CONFIG_USB_USS720)	+= uss720.o
 obj-$(CONFIG_USB_SEVSEG)	+= usbsevseg.o
-obj-$(CONFIG_USB_VST)		+= vstusb.o
 
 obj-$(CONFIG_USB_SISUSBVGA)	+= sisusbvga/
 

drivers/usb/misc/adutux.c

···
 #define dbg(lvl, format, arg...) 					\
 do { 									\
 	if (debug >= lvl)						\
-		printk(KERN_DEBUG __FILE__ " : " format " \n", ## arg);	\
+		printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg);	\
 } while (0)
 
 
···
 #define ADU_PRODUCT_ID 0x0064
 
 /* table of devices that work with this driver */
-static struct usb_device_id device_table [] = {
+static const struct usb_device_id device_table[] = {
 	{ USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID) },		/* ADU100 */
 	{ USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+20) }, 	/* ADU120 */
 	{ USB_DEVICE(ADU_VENDOR_ID, ADU_PRODUCT_ID+30) }, 	/* ADU130 */
···
 	if (debug < level)
 		return;
 
-	printk(KERN_DEBUG __FILE__": %s - length = %d, data = ",
-	       function, size);
+	printk(KERN_DEBUG "%s: %s - length = %d, data = ",
+	       __FILE__, function, size);
 	for (i = 0; i < size; ++i)
 		printk("%.2x ", data[i]);
 	printk("\n");

drivers/usb/misc/appledisplay.c

···
 	.bInterfaceProtocol = 0x00
 
 /* table of devices that work with this driver */
-static struct usb_device_id appledisplay_table [] = {
+static const struct usb_device_id appledisplay_table[] = {
 	{ APPLEDISPLAY_DEVICE(0x9218) },
 	{ APPLEDISPLAY_DEVICE(0x9219) },
 	{ APPLEDISPLAY_DEVICE(0x921c) },
···
 		return pdata->msgdata[1];
 }
 
-static struct backlight_ops appledisplay_bl_data = {
+static const struct backlight_ops appledisplay_bl_data = {
 	.get_brightness	= appledisplay_bl_get_brightness,
 	.update_status	= appledisplay_bl_update_status,
 };
···
 						&appledisplay_bl_data);
 	if (IS_ERR(pdata->bd)) {
 		dev_err(&iface->dev, "Backlight registration failed\n");
+		retval = PTR_ERR(pdata->bd);
 		goto error;
 	}
 

drivers/usb/misc/berry_charge.c

···
-/*
- * USB BlackBerry charging module
- *
- * Copyright (C) 2007 Greg Kroah-Hartman <[e-mail]>
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License as
- *	published by the Free Software Foundation, version 2.
- *
- * Information on how to switch configs was taken by the bcharge.cc file
- * created by the barry.sf.net project.
- *
- * bcharge.cc has the following copyright:
- * 	Copyright (C) 2006, Net Direct Inc. (http://www.netdirect.ca/)
- * and is released under the GPLv2.
- *
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/usb.h>
-
-#define RIM_VENDOR		0x0fca
-#define BLACKBERRY		0x0001
-#define BLACKBERRY_PEARL_DUAL   0x0004
-#define BLACKBERRY_PEARL        0x0006
-
-static int debug;
-static int pearl_dual_mode = 1;
-
-#ifdef dbg
-#undef dbg
-#endif
-#define dbg(dev, format, arg...)				\
-	if (debug)						\
-		dev_printk(KERN_DEBUG , dev , format , ## arg)
-
-static struct usb_device_id id_table [] = {
-	{ USB_DEVICE(RIM_VENDOR, BLACKBERRY) },
-	{ USB_DEVICE(RIM_VENDOR, BLACKBERRY_PEARL) },
-	{ USB_DEVICE(RIM_VENDOR, BLACKBERRY_PEARL_DUAL) },
-	{ },					/* Terminating entry */
-};
-MODULE_DEVICE_TABLE(usb, id_table);
-
-static int magic_charge(struct usb_device *udev)
-{
-	char *dummy_buffer = kzalloc(2, GFP_KERNEL);
-	int retval;
-
-	if (!dummy_buffer)
-		return -ENOMEM;
-
-	/* send two magic commands and then set the configuration.  The device
-	 * will then reset itself with the new power usage and should start
-	 * charging. */
-
-	/* Note, with testing, it only seems that the first message is really
-	 * needed (at least for the 8700c), but to be safe, we emulate what
-	 * other operating systems seem to be sending to their device.  We
-	 * really need to get some specs for this device to be sure about what
-	 * is going on here.
-	 */
-	dbg(&udev->dev, "Sending first magic command\n");
-	retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
-				 0xa5, 0xc0, 0, 1, dummy_buffer, 2, 100);
-	if (retval != 2) {
-		dev_err(&udev->dev, "First magic command failed: %d.\n",
-			retval);
-		goto exit;
-	}
-
-	dbg(&udev->dev, "Sending second magic command\n");
-	retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
-				 0xa2, 0x40, 0, 1, dummy_buffer, 0, 100);
-	if (retval != 0) {
-		dev_err(&udev->dev, "Second magic command failed: %d.\n",
-			retval);
-		goto exit;
-	}
-
-	dbg(&udev->dev, "Calling set_configuration\n");
-	retval = usb_driver_set_configuration(udev, 1);
-	if (retval)
-		dev_err(&udev->dev, "Set Configuration failed :%d.\n", retval);
-
-exit:
-	kfree(dummy_buffer);
-	return retval;
-}
-
-static int magic_dual_mode(struct usb_device *udev)
-{
-	char *dummy_buffer = kzalloc(2, GFP_KERNEL);
-	int retval;
-
-	if (!dummy_buffer)
-		return -ENOMEM;
-
-	/* send magic command so that the Blackberry Pearl device exposes
-	 * two interfaces: both the USB mass-storage one and one which can
-	 * be used for database access. */
-	dbg(&udev->dev, "Sending magic pearl command\n");
-	retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
-				 0xa9, 0xc0, 1, 1, dummy_buffer, 2, 100);
-	dbg(&udev->dev, "Magic pearl command returned %d\n", retval);
-
-	dbg(&udev->dev, "Calling set_configuration\n");
-	retval = usb_driver_set_configuration(udev, 1);
-	if (retval)
-		dev_err(&udev->dev, "Set Configuration failed :%d.\n", retval);
-
-	kfree(dummy_buffer);
-	return retval;
-}
-
-static int berry_probe(struct usb_interface *intf,
-		       const struct usb_device_id *id)
-{
-	struct usb_device *udev = interface_to_usbdev(intf);
-
-	if (udev->bus_mA < 500) {
-		dbg(&udev->dev, "Not enough power to charge available\n");
-		return -ENODEV;
-	}
-
-	dbg(&udev->dev, "Power is set to %dmA\n",
-	    udev->actconfig->desc.bMaxPower * 2);
-
-	/* check the power usage so we don't try to enable something that is
-	 * already enabled */
-	if ((udev->actconfig->desc.bMaxPower * 2) == 500) {
-		dbg(&udev->dev, "device is already charging, power is "
-		    "set to %dmA\n", udev->actconfig->desc.bMaxPower * 2);
-		return -ENODEV;
-	}
-
-	/* turn the power on */
-	magic_charge(udev);
-
-	if ((le16_to_cpu(udev->descriptor.idProduct) == BLACKBERRY_PEARL) &&
-	    (pearl_dual_mode))
-		magic_dual_mode(udev);
-
-	/* we don't really want to bind to the device, userspace programs can
-	 * handle the syncing just fine, so get outta here. */
-	return -ENODEV;
-}
-
-static void berry_disconnect(struct usb_interface *intf)
-{
-}
-
-static struct usb_driver berry_driver = {
-	.name =		"berry_charge",
-	.probe =	berry_probe,
-	.disconnect =	berry_disconnect,
-	.id_table =	id_table,
-};
-
-static int __init berry_init(void)
-{
-	return usb_register(&berry_driver);
-}
-
-static void __exit berry_exit(void)
-{
-	usb_deregister(&berry_driver);
-}
-
-module_init(berry_init);
-module_exit(berry_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Greg Kroah-Hartman <[e-mail]>");
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
-module_param(pearl_dual_mode, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(pearl_dual_mode, "Change Blackberry Pearl to run in dual mode");

drivers/usb/misc/cypress_cy7c63.c

···
 
 
 /* table of devices that work with this driver */
-static struct usb_device_id cypress_table [] = {
+static const struct usb_device_id cypress_table[] = {
 	{ USB_DEVICE(CYPRESS_VENDOR_ID, CYPRESS_PRODUCT_ID) },
 	{ }
 };

drivers/usb/misc/cytherm.c

···
 #define USB_SKEL_VENDOR_ID	0x04b4
 #define USB_SKEL_PRODUCT_ID	0x0002
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(USB_SKEL_VENDOR_ID, USB_SKEL_PRODUCT_ID) },
 	{ }
 };

drivers/usb/misc/emi26.c

···
 	return err;
 }
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(EMI26_VENDOR_ID, EMI26_PRODUCT_ID) },
 	{ USB_DEVICE(EMI26_VENDOR_ID, EMI26B_PRODUCT_ID) },
 	{ }                                             /* Terminating entry */

drivers/usb/misc/emi62.c

···
 	return err;
 }
 
-static __devinitdata struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] __devinitconst = {
 	{ USB_DEVICE(EMI62_VENDOR_ID, EMI62_PRODUCT_ID) },
 	{ }                                             /* Terminating entry */
 };

drivers/usb/misc/ftdi-elan.c

···
 #define USB_FTDI_ELAN_VENDOR_ID 0x0403
 #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea
 /* table of devices that work with this driver*/
-static struct usb_device_id ftdi_elan_table[] = {
+static const struct usb_device_id ftdi_elan_table[] = {
         {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)},
         { /* Terminating entry */ }
 };
···
 */
 static int ftdi_elan_open(struct inode *inode, struct file *file)
 {
-        int subminor = iminor(inode);
-        struct usb_interface *interface = usb_find_interface(&ftdi_elan_driver,
-                subminor);
+	int subminor;
+	struct usb_interface *interface;
+
+        subminor = iminor(inode);
+        interface = usb_find_interface(&ftdi_elan_driver, subminor);
+
         if (!interface) {
                 printk(KERN_ERR "can't find device for minor %d\n", subminor);
                 return -ENODEV;

drivers/usb/misc/idmouse.c

···
 #define ID_CHERRY  0x0010
 
 /* device ID table */
-static struct usb_device_id idmouse_table[] = {
+static const struct usb_device_id idmouse_table[] = {
 	{USB_DEVICE(ID_SIEMENS, ID_IDMOUSE)}, /* Siemens ID Mouse (Professional) */
 	{USB_DEVICE(ID_SIEMENS, ID_CHERRY )}, /* Cherry FingerTIP ID Board       */
 	{}                                    /* terminating null entry          */

drivers/usb/misc/iowarrior.c

···
 /* driver registration */
 /*---------------------*/
 /* table of devices that work with this driver */
-static struct usb_device_id iowarrior_ids[] = {
+static const struct usb_device_id iowarrior_ids[] = {
 	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40)},
 	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24)},
 	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOWPV1)},
···
 
 	dbg("%s", __func__);
 
+	lock_kernel();
 	subminor = iminor(inode);
 
 	interface = usb_find_interface(&iowarrior_driver, subminor);
 	if (!interface) {
+		unlock_kernel();
 		err("%s - error, can't find device for minor %d", __func__,
 		    subminor);
 		return -ENODEV;
···
 	dev = usb_get_intfdata(interface);
 	if (!dev) {
 		mutex_unlock(&iowarrior_open_disc_lock);
+		unlock_kernel();
 		return -ENODEV;
 	}
 
···
 
 out:
 	mutex_unlock(&dev->mutex);
+	unlock_kernel();
 	return retval;
 }
 

drivers/usb/misc/isight_firmware.c

···
 #include <linux/errno.h>
 #include <linux/module.h>
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{USB_DEVICE(0x05ac, 0x8300)},
 	{},
 };
···
 	release_firmware(firmware);
 	return ret;
 }
+
+MODULE_FIRMWARE("isight.fw");
 
 static void isight_firmware_disconnect(struct usb_interface *intf)
 {

drivers/usb/misc/ldusb.c

···
 #endif
 
 /* table of devices that work with this driver */
-static struct usb_device_id ld_usb_table [] = {
+static const struct usb_device_id ld_usb_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
 	{ USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
 	{ USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
···
 	/* register this driver with the USB subsystem */
 	retval = usb_register(&ld_usb_driver);
 	if (retval)
-		err("usb_register failed for the "__FILE__" driver. Error number %d\n", retval);
+		err("usb_register failed for the %s driver. Error number %d\n", __FILE__, retval);
 
 	return retval;
 }

drivers/usb/misc/legousbtower.c

···
 
 /* Use our own dbg macro */
 #undef dbg
-#define dbg(lvl, format, arg...) do { if (debug >= lvl) printk(KERN_DEBUG  __FILE__ ": " format "\n", ## arg); } while (0)
-
+#define dbg(lvl, format, arg...)					\
+do {									\
+	if (debug >= lvl)						\
+		printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg);	\
+} while (0)
 
 /* Version Information */
 #define DRIVER_VERSION "v0.96"
···
 
 
 /* table of devices that work with this driver */
-static struct usb_device_id tower_table [] = {
+static const struct usb_device_id tower_table[] = {
 	{ USB_DEVICE(LEGO_USB_TOWER_VENDOR_ID, LEGO_USB_TOWER_PRODUCT_ID) },
 	{ }					/* Terminating entry */
 };
···
 	if (debug < level)
 		return;
 
-	printk (KERN_DEBUG __FILE__": %s - length = %d, data = ", function, size);
+	printk (KERN_DEBUG "%s: %s - length = %d, data = ", __FILE__, function, size);
 	for (i = 0; i < size; ++i) {
 		printk ("%.2x ", data[i]);
 	}
···
 	/* register this driver with the USB subsystem */
 	result = usb_register(&tower_driver);
 	if (result < 0) {
-		err("usb_register failed for the "__FILE__" driver. Error number %d", result);
+		err("usb_register failed for the %s driver. Error number %d", __FILE__, result);
 		retval = -1;
 		goto exit;
 	}

drivers/usb/misc/rio500.c

···
 {
 	struct rio_usb_data *rio = &rio_instance;
 
+	/* against disconnect() */
+	lock_kernel();
 	mutex_lock(&(rio->lock));
 
 	if (rio->isopen || !rio->present) {
 		mutex_unlock(&(rio->lock));
+		unlock_kernel();
 		return -EBUSY;
 	}
 	rio->isopen = 1;
···
 	mutex_unlock(&(rio->lock));
 
 	dev_info(&rio->rio_dev->dev, "Rio opened.\n");
+	unlock_kernel();
 
 	return 0;
 }
···
 	int retries;
 	int retval=0;
 
-	lock_kernel();
 	mutex_lock(&(rio->lock));
         /* Sanity check to make sure rio is connected, powered, etc */
         if (rio->present == 0 || rio->rio_dev == NULL) {
···
 
 err_out:
 	mutex_unlock(&(rio->lock));
-	unlock_kernel();
 	return retval;
 }
 
···
 	struct rio_usb_data *rio = usb_get_intfdata (intf);
 
 	usb_set_intfdata (intf, NULL);
+	lock_kernel();
 	if (rio) {
 		usb_deregister_dev(intf, &usb_rio_class);
 
···
 			/* better let it finish - the release will do whats needed */
 			rio->rio_dev = NULL;
 			mutex_unlock(&(rio->lock));
+			unlock_kernel();
 			return;
 		}
 		kfree(rio->ibuf);
···
 		rio->present = 0;
 		mutex_unlock(&(rio->lock));
 	}
+	unlock_kernel();
 }
 
-static struct usb_device_id rio_table [] = {
+static const struct usb_device_id rio_table[] = {
 	{ USB_DEVICE(0x0841, 1) }, 		/* Rio 500 */
 	{ }					/* Terminating entry */
 };

drivers/usb/misc/sisusbvga/sisusb.c

···
 	sisusb->urbstatus[index] |= SU_URB_BUSY;
 
 	/* Submit URB */
-	retval = usb_submit_urb(urb, GFP_ATOMIC);
+	retval = usb_submit_urb(urb, GFP_KERNEL);
 
 	/* If OK, and if timeout > 0, wait for completion */
 	if ((retval == 0) && timeout) {
···
 	urb->actual_length = 0;
 
 	sisusb->completein = 0;
-	retval = usb_submit_urb(urb, GFP_ATOMIC);
+	retval = usb_submit_urb(urb, GFP_KERNEL);
 	if (retval == 0) {
 		wait_event_timeout(sisusb->wait_q, sisusb->completein, timeout);
 		if (!sisusb->completein) {
···
 	struct usb_interface *interface;
 	int subminor = iminor(inode);
 
-	if (!(interface = usb_find_interface(&sisusb_driver, subminor)))
+	lock_kernel();
+	if (!(interface = usb_find_interface(&sisusb_driver, subminor))) {
+		unlock_kernel();
 		return -ENODEV;
+	}
 
-	if (!(sisusb = usb_get_intfdata(interface)))
+	if (!(sisusb = usb_get_intfdata(interface))) {
+		unlock_kernel();
 		return -ENODEV;
+	}
 
 	mutex_lock(&sisusb->lock);
 
 	if (!sisusb->present || !sisusb->ready) {
 		mutex_unlock(&sisusb->lock);
+		unlock_kernel();
 		return -ENODEV;
 	}
 
 	if (sisusb->isopen) {
 		mutex_unlock(&sisusb->lock);
+		unlock_kernel();
 		return -EBUSY;
 	}
 
···
 			if (sisusb_init_gfxdevice(sisusb, 0)) {
 				mutex_unlock(&sisusb->lock);
 				dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n");
+				unlock_kernel();
 				return -EIO;
 			}
 		} else {
 			mutex_unlock(&sisusb->lock);
 			dev_err(&sisusb->sisusb_dev->dev, "Device not attached to USB 2.0 hub\n");
+			unlock_kernel();
 			return -EIO;
 		}
 	}
···
 	file->private_data = sisusb;
 
 	mutex_unlock(&sisusb->lock);
+	unlock_kernel();
 
 	return 0;
 }
···
 	kref_put(&sisusb->kref, sisusb_delete);
 }
 
-static struct usb_device_id sisusb_table [] = {
+static const struct usb_device_id sisusb_table[] = {
 	{ USB_DEVICE(0x0711, 0x0550) },
 	{ USB_DEVICE(0x0711, 0x0900) },
 	{ USB_DEVICE(0x0711, 0x0901) },

drivers/usb/misc/trancevibrator.c

···
 #define TRANCEVIBRATOR_VENDOR_ID	0x0b49	/* ASCII Corporation */
 #define TRANCEVIBRATOR_PRODUCT_ID	0x064f	/* Trance Vibrator */
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(TRANCEVIBRATOR_VENDOR_ID, TRANCEVIBRATOR_PRODUCT_ID) },
 	{ },
 };

drivers/usb/misc/usblcd.c

···
 #define IOCTL_GET_DRV_VERSION	2
 
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ .idVendor = 0x10D2, .match_flags = USB_DEVICE_ID_MATCH_VENDOR, },
 	{ },
 };
···
 	struct usb_interface *interface;
 	int subminor, r;
 
+	lock_kernel();
 	subminor = iminor(inode);
 
 	interface = usb_find_interface(&lcd_driver, subminor);
 	if (!interface) {
+		unlock_kernel();
 		err ("USBLCD: %s - error, can't find device for minor %d",
 		     __func__, subminor);
 		return -ENODEV;
···
 	dev = usb_get_intfdata(interface);
 	if (!dev) {
 		mutex_unlock(&open_disc_mutex);
+		unlock_kernel();
 		return -ENODEV;
 	}
 
···
 	r = usb_autopm_get_interface(interface);
 	if (r < 0) {
 		kref_put(&dev->kref, lcd_delete);
+		unlock_kernel();
 		return r;
 	}
 
 	/* save our object in the file's private structure */
 	file->private_data = dev;
+	unlock_kernel();
 
 	return 0;
 }

drivers/usb/misc/usbled.c

···
 #define PRODUCT_ID	0x1223
 
 /* table of devices that work with this driver */
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(VENDOR_ID, PRODUCT_ID) },
 	{ },
 };

drivers/usb/misc/usbsevseg.c

···
 #define MAXLEN		6
 
 /* table of devices that work with this driver */
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(VENDOR_ID, PRODUCT_ID) },
 	{ },
 };

drivers/usb/misc/usbtest.c

···
 		return -ERESTARTSYS;
 
 	/* FIXME: What if a system sleep starts while a test is running? */
-	if (!intf->is_active) {
-		mutex_unlock(&dev->lock);
-		return -EHOSTUNREACH;
-	}
 
 	/* some devices, like ez-usb default devices, need a non-default
 	 * altsetting to have any active endpoints.  some tests change
···
 #endif
 
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 
 	/*-------------------------------------------------------------*/
 

drivers/usb/misc/uss720.c

···
 }
 
 /* table of cables that work through this driver */
-static struct usb_device_id uss720_table [] = {
+static const struct usb_device_id uss720_table[] = {
 	{ USB_DEVICE(0x047e, 0x1001) },
 	{ USB_DEVICE(0x0557, 0x2001) },
 	{ USB_DEVICE(0x0729, 0x1284) },

drivers/usb/misc/vstusb.c

···
-/*****************************************************************************
- *  File: drivers/usb/misc/vstusb.c
- *
- *  Purpose: Support for the bulk USB Vernier Spectrophotometers
- *
- *  Author:     Johnnie Peters
- *              Axian Consulting
- *              Beaverton, OR, USA 97005
- *
- *  Modified by:     EQware Engineering, Inc.
- *                   Oregon City, OR, USA 97045
- *
- *  Copyright:  2007, 2008
- *              Vernier Software & Technology
- *              Beaverton, OR, USA 97005
- *
- *  Web:        www.vernier.com
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  published by the Free Software Foundation.
- *
- *****************************************************************************/
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/uaccess.h>
-#include <linux/usb.h>
-
-#include <linux/usb/vstusb.h>
-
-#define DRIVER_VERSION "VST USB Driver Version 1.5"
-#define DRIVER_DESC "Vernier Software Technology Bulk USB Driver"
-
-#ifdef CONFIG_USB_DYNAMIC_MINORS
-	#define VSTUSB_MINOR_BASE	0
-#else
-	#define VSTUSB_MINOR_BASE	199
-#endif
-
-#define USB_VENDOR_OCEANOPTICS	0x2457
-#define USB_VENDOR_VERNIER	0x08F7	/* Vernier Software & Technology */
-
-#define USB_PRODUCT_USB2000	0x1002
-#define USB_PRODUCT_ADC1000_FW	0x1003	/* firmware download (renumerates) */
-#define USB_PRODUCT_ADC1000	0x1004
-#define USB_PRODUCT_HR2000_FW	0x1009	/* firmware download (renumerates) */
-#define USB_PRODUCT_HR2000	0x100A
-#define USB_PRODUCT_HR4000_FW	0x1011	/* firmware download (renumerates) */
-#define USB_PRODUCT_HR4000	0x1012
-#define USB_PRODUCT_USB650	0x1014	/* "Red Tide" */
-#define USB_PRODUCT_QE65000	0x1018
-#define USB_PRODUCT_USB4000	0x1022
-#define USB_PRODUCT_USB325	0x1024	/* "Vernier Spectrometer" */
-
-#define USB_PRODUCT_LABPRO	0x0001
-#define USB_PRODUCT_LABQUEST	0x0005
-
-#define VST_MAXBUFFER		(64*1024)
-
-static struct usb_device_id id_table[] = {
-	{ USB_DEVICE(USB_VENDOR_OCEANOPTICS, USB_PRODUCT_USB2000)},
-	{ USB_DEVICE(USB_VENDOR_OCEANOPTICS, USB_PRODUCT_HR4000)},
-	{ USB_DEVICE(USB_VENDOR_OCEANOPTICS, USB_PRODUCT_USB650)},
-	{ USB_DEVICE(USB_VENDOR_OCEANOPTICS, USB_PRODUCT_USB4000)},
-	{ USB_DEVICE(USB_VENDOR_OCEANOPTICS, USB_PRODUCT_USB325)},
-	{ USB_DEVICE(USB_VENDOR_VERNIER, USB_PRODUCT_LABQUEST)},
-	{ USB_DEVICE(USB_VENDOR_VERNIER, USB_PRODUCT_LABPRO)},
-	{},
-};
-
-MODULE_DEVICE_TABLE(usb, id_table);
-
-struct vstusb_device {
-	struct kref				kref;
-	struct mutex            lock;
-	struct usb_device       *usb_dev;
-	char                    present;
-	char                    isopen;
-	struct usb_anchor       submitted;
-	int                     rd_pipe;
-	int                     rd_timeout_ms;
-	int                     wr_pipe;
-	int                     wr_timeout_ms;
-};
-#define to_vst_dev(d) container_of(d, struct vstusb_device, kref)
-
-static struct usb_driver vstusb_driver;
-
-static void vstusb_delete(struct kref *kref)
-{
-	struct vstusb_device *vstdev = to_vst_dev(kref);
-
-	usb_put_dev(vstdev->usb_dev);
-	kfree(vstdev);
-}
-
-static int vstusb_open(struct inode *inode, struct file *file)
-{
-	struct vstusb_device *vstdev;
-	struct usb_interface *interface;
-
-	interface = usb_find_interface(&vstusb_driver, iminor(inode));
-
-	if (!interface) {
-		printk(KERN_ERR KBUILD_MODNAME
-		       ": %s - error, can't find device for minor %d\n",
-		       __func__, iminor(inode));
-		return -ENODEV;
-	}
-
-	vstdev = usb_get_intfdata(interface);
-
-	if (!vstdev)
-		return -ENODEV;
-
-	/* lock this device */
-	mutex_lock(&vstdev->lock);
-
-	/* can only open one time */
-	if ((!vstdev->present) || (vstdev->isopen)) {
-		mutex_unlock(&vstdev->lock);
-		return -EBUSY;
-	}
-
-	/* increment our usage count */
-	kref_get(&vstdev->kref);
-
-	vstdev->isopen = 1;
-
-	/* save device in the file's private structure */
-	file->private_data = vstdev;
-
-	dev_dbg(&vstdev->usb_dev->dev, "%s: opened\n", __func__);
-
-	mutex_unlock(&vstdev->lock);
-
-	return 0;
-}
-
-static int vstusb_release(struct inode *inode, struct file *file)
-{
-	struct vstusb_device *vstdev;
-
-	vstdev = file->private_data;
-
-	if (vstdev == NULL)
-		return -ENODEV;
-
-	mutex_lock(&vstdev->lock);
-
-	vstdev->isopen = 0;
-
-	dev_dbg(&vstdev->usb_dev->dev, "%s: released\n", __func__);
-
-	mutex_unlock(&vstdev->lock);
-
-	kref_put(&vstdev->kref, vstusb_delete);
-
-	return 0;
-}
-
-static void usb_api_blocking_completion(struct urb *urb)
-{
-	struct completion *completeit = urb->context;
-
-	complete(completeit);
-}
-
-static int vstusb_fill_and_send_urb(struct urb *urb,
-				    struct usb_device *usb_dev,
-				    unsigned int pipe, void *data,
-				    unsigned int len, struct completion *done)
-{
-	struct usb_host_endpoint *ep;
-	struct usb_host_endpoint **hostep;
-	unsigned int pipend;
-
-	int status;
-
-	hostep = usb_pipein(pipe) ? usb_dev->ep_in : usb_dev->ep_out;
-	pipend = usb_pipeendpoint(pipe);
-	ep = hostep[pipend];
-
-	if (!ep || (len == 0))
-		return -EINVAL;
-
-	if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
-	    == USB_ENDPOINT_XFER_INT) {
-		pipe = (pipe & ~(3 << 30)) | (PIPE_INTERRUPT << 30);
-		usb_fill_int_urb(urb, usb_dev, pipe, data, len,
-				 (usb_complete_t)usb_api_blocking_completion,
-				 NULL, ep->desc.bInterval);
-	} else
-		usb_fill_bulk_urb(urb, usb_dev, pipe, data, len,
-				  (usb_complete_t)usb_api_blocking_completion,
-				  NULL);
-
-	init_completion(done);
-	urb->context = done;
-	urb->actual_length = 0;
-	status = usb_submit_urb(urb, GFP_KERNEL);
-
-	return status;
-}
-
-static int vstusb_complete_urb(struct urb *urb, struct completion *done,
-			       int timeout, int *actual_length)
-{
-	unsigned long expire;
-	int status;
-
-	expire = timeout ? msecs_to_jiffies(timeout) : MAX_SCHEDULE_TIMEOUT;
-	if (!wait_for_completion_interruptible_timeout(done, expire)) {
-		usb_kill_urb(urb);
-		status = urb->status == -ENOENT ? -ETIMEDOUT : urb->status;
-
-		dev_dbg(&urb->dev->dev,
-			"%s timed out on ep%d%s len=%d/%d, urb status = %d\n",
-			current->comm,
-			usb_pipeendpoint(urb->pipe),
-			usb_pipein(urb->pipe) ? "in" : "out",
-			urb->actual_length,
-			urb->transfer_buffer_length,
-			urb->status);
-
-	} else {
-		if (signal_pending(current)) {
-			/* if really an error */
-			if (urb->status && !((urb->status == -ENOENT)     ||
-					     (urb->status == -ECONNRESET) ||
-					     (urb->status == -ESHUTDOWN))) {
-				status = -EINTR;
-				usb_kill_urb(urb);
-			} else {
-				status = 0;
-			}
-
-			dev_dbg(&urb->dev->dev,
-				"%s: signal pending on ep%d%s len=%d/%d,"
-				"urb status = %d\n",
-				current->comm,
-				usb_pipeendpoint(urb->pipe),
-				usb_pipein(urb->pipe) ? "in" : "out",
-				urb->actual_length,
-				urb->transfer_buffer_length,
-				urb->status);
-
-		} else {
-			status = urb->status;
-		}
-	}
-
-	if (actual_length)
-		*actual_length = urb->actual_length;
-
-	return status;
-}
-
-static ssize_t vstusb_read(struct file *file, char __user *buffer,
-			   size_t count, loff_t *ppos)
-{
-	struct vstusb_device *vstdev;
-	int cnt = -1;
-	void *buf;
-	int retval = 0;
-
-	struct urb              *urb;
-	struct usb_device       *dev;
-	unsigned int            pipe;
-	int                     timeout;
-
-	DECLARE_COMPLETION_ONSTACK(done);
-
-	vstdev = file->private_data;
-
-	if (vstdev == NULL)
-		return -ENODEV;
-
-	/* verify that we actually want to read some data */
-	if ((count == 0) || (count > VST_MAXBUFFER))
-		return -EINVAL;
-
-	/* lock this object */
-	if (mutex_lock_interruptible(&vstdev->lock))
-		return -ERESTARTSYS;
-
-	/* anyone home */
-	if (!vstdev->present) {
-		mutex_unlock(&vstdev->lock);
-		printk(KERN_ERR KBUILD_MODNAME
-		       ": %s: device not present\n", __func__);
-		return -ENODEV;
-	}
-
-	/* pull out the necessary data */
-	dev =     vstdev->usb_dev;
-	pipe =    usb_rcvbulkpipe(dev, vstdev->rd_pipe);
-	timeout = vstdev->rd_timeout_ms;
-
-	buf = kmalloc(count, GFP_KERNEL);
-	if (buf == NULL) {
-		mutex_unlock(&vstdev->lock);
-		return -ENOMEM;
-	}
-
-	urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!urb) {
-		kfree(buf);
-		mutex_unlock(&vstdev->lock);
-		return -ENOMEM;
-	}
-
-	usb_anchor_urb(urb, &vstdev->submitted);
-	retval = vstusb_fill_and_send_urb(urb, dev, pipe, buf, count, &done);
-	mutex_unlock(&vstdev->lock);
-	if (retval) {
-		usb_unanchor_urb(urb);
-		dev_err(&dev->dev, "%s: error %d filling and sending urb %d\n",
-			__func__, retval, pipe);
-		goto exit;
-	}
-
-	retval = vstusb_complete_urb(urb, &done, timeout, &cnt);
-	if (retval) {
-		dev_err(&dev->dev, "%s: error %d completing urb %d\n",
-			__func__, retval, pipe);
-		goto exit;
-	}
-
-	if (copy_to_user(buffer, buf, cnt)) {
-		dev_err(&dev->dev, "%s: can't copy_to_user\n", __func__);
-		retval = -EFAULT;
-	} else {
-		retval = cnt;
-		dev_dbg(&dev->dev, "%s: read %d bytes from pipe %d\n",
-			__func__, cnt, pipe);
-	}
-
-exit:
-	usb_free_urb(urb);
-	kfree(buf);
-	return retval;
-}
-
-static ssize_t vstusb_write(struct file *file, const char __user *buffer,
-			    size_t count, loff_t *ppos)
-{
-	struct vstusb_device *vstdev;
-	int cnt = -1;
-	void *buf;
-	int retval = 0;
-
-	struct urb              *urb;
-	struct usb_device       *dev;
-	unsigned int            pipe;
-	int                     timeout;
-
-	DECLARE_COMPLETION_ONSTACK(done);
-
-	vstdev = file->private_data;
-
-	if (vstdev == NULL)
-		return -ENODEV;
-
-	/* verify that we actually have some data to write */
-	if ((count == 0) || (count > VST_MAXBUFFER))
-		return retval;
-
-	/* lock this object */
-	if (mutex_lock_interruptible(&vstdev->lock))
-		return -ERESTARTSYS;
-
-	/* anyone home */
-	if (!vstdev->present) {
-		mutex_unlock(&vstdev->lock);
-		printk(KERN_ERR KBUILD_MODNAME
-		       ": %s: device not present\n", __func__);
-		return -ENODEV;
-	}
-
-	/* pull out the necessary data */
-	dev =     vstdev->usb_dev;
-	pipe =    usb_sndbulkpipe(dev, vstdev->wr_pipe);
-	timeout = vstdev->wr_timeout_ms;
-
-	buf = kmalloc(count, GFP_KERNEL);
-	if (buf == NULL) {
-		mutex_unlock(&vstdev->lock);
-		return -ENOMEM;
-	}
-
-	urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!urb) {
-		kfree(buf);
-		mutex_unlock(&vstdev->lock);
-		return -ENOMEM;
-	}
-
-	if (copy_from_user(buf, buffer, count)) {
-		mutex_unlock(&vstdev->lock);
-		dev_err(&dev->dev, "%s: can't copy_from_user\n", __func__);
-		retval = -EFAULT;
-		goto exit;
-	}
-
-	usb_anchor_urb(urb, &vstdev->submitted);
-	retval = vstusb_fill_and_send_urb(urb, dev, pipe, buf, count, &done);
-	mutex_unlock(&vstdev->lock);
-	if (retval) {
-		usb_unanchor_urb(urb);
-		dev_err(&dev->dev, "%s: error %d filling and sending urb %d\n",
-			__func__, retval, pipe);
-		goto exit;
-	}
-
-	retval = vstusb_complete_urb(urb, &done, timeout, &cnt);
-	if (retval) {
-		dev_err(&dev->dev, "%s: error %d completing urb %d\n",
-			__func__, retval, pipe);
-		goto exit;
-	} else {
-		retval = cnt;
-		dev_dbg(&dev->dev, "%s: sent %d bytes to pipe %d\n",
-			__func__, cnt, pipe);
-	}
-
-exit:
-	usb_free_urb(urb);
-	kfree(buf);
-	return retval;
-}
-
-static long vstusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	int retval = 0;
-	int cnt = -1;
-	void __user *data = (void __user *)arg;
-	struct vstusb_args usb_data;
-
-	struct vstusb_device *vstdev;
-	void *buffer = NULL; /* must be initialized. buffer is
-			      *	referenced on exit but not all
-			      * ioctls allocate it */
-
-	struct urb              *urb = NULL; /* must be initialized. urb is
-					      *	referenced on exit but not all
-					      * ioctls allocate it */
-	struct usb_device       *dev;
-	unsigned int            pipe;
-	int                     timeout;
-
-	DECLARE_COMPLETION_ONSTACK(done);
-
-	vstdev = file->private_data;
-
-	if (_IOC_TYPE(cmd) != VST_IOC_MAGIC) {
-		dev_warn(&vstdev->usb_dev->dev,
-			 "%s: ioctl command %x, bad ioctl magic %x, "
-			 "expected %x\n", __func__, cmd,
-			 _IOC_TYPE(cmd), VST_IOC_MAGIC);
-		return -EINVAL;
-	}
-
-	if (vstdev == NULL)
-		return -ENODEV;
-
-	if (copy_from_user(&usb_data, data, sizeof(struct vstusb_args))) {
-		dev_err(&vstdev->usb_dev->dev, "%s: can't copy_from_user\n",
-			__func__);
-		return -EFAULT;
-	}
-
-	/* lock this object */
-	if (mutex_lock_interruptible(&vstdev->lock)) {
-		retval = -ERESTARTSYS;
-		goto exit;
-	}
-
-	/* anyone home */
-	if (!vstdev->present) {
-		mutex_unlock(&vstdev->lock);
-		dev_err(&vstdev->usb_dev->dev, "%s: device not present\n",
-			__func__);
-		retval = -ENODEV;
-		goto exit;
-	}
-
-	/* pull out the necessary data */
-	dev = vstdev->usb_dev;
-
-	switch (cmd) {
-
-	case IOCTL_VSTUSB_CONFIG_RW:
-
-		vstdev->rd_pipe = usb_data.rd_pipe;
-		vstdev->rd_timeout_ms = usb_data.rd_timeout_ms;
-		vstdev->wr_pipe = usb_data.wr_pipe;
-		vstdev->wr_timeout_ms = usb_data.wr_timeout_ms;
-
-		mutex_unlock(&vstdev->lock);
-
-		dev_dbg(&dev->dev, "%s: setting pipes/timeouts, "
-			"rdpipe = %d, rdtimeout = %d, "
-			"wrpipe = %d, wrtimeout = %d\n", __func__,
-			vstdev->rd_pipe, vstdev->rd_timeout_ms,
-			vstdev->wr_pipe, vstdev->wr_timeout_ms);
-		break;
-
-	case IOCTL_VSTUSB_SEND_PIPE:
-
-		if ((usb_data.count == 0) || (usb_data.count > VST_MAXBUFFER)) {
-			mutex_unlock(&vstdev->lock);
-			retval = -EINVAL;
-			goto exit;
-		}
-
-		buffer = kmalloc(usb_data.count, GFP_KERNEL);
-		if (buffer == NULL) {
-			mutex_unlock(&vstdev->lock);
-			retval = -ENOMEM;
-			goto exit;
-		}
-
-		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!urb) {
-			mutex_unlock(&vstdev->lock);
-			retval = -ENOMEM;
-			goto exit;
-		}
-
-		timeout = usb_data.timeout_ms;
-
-		pipe = usb_sndbulkpipe(dev, usb_data.pipe);
-
-		if (copy_from_user(buffer, usb_data.buffer, usb_data.count)) {
-			dev_err(&dev->dev, "%s: can't copy_from_user\n",
-				__func__);
-			mutex_unlock(&vstdev->lock);
-			retval = -EFAULT;
-			goto exit;
-		}
-
-		usb_anchor_urb(urb, &vstdev->submitted);
-		retval = vstusb_fill_and_send_urb(urb, dev, pipe, buffer,
-						  usb_data.count, &done);
-		mutex_unlock(&vstdev->lock);
-		if (retval) {
-			usb_unanchor_urb(urb);
-			dev_err(&dev->dev,
-				"%s: error %d filling and sending urb %d\n",
-				__func__, retval, pipe);
-			goto exit;
-		}
-
-		retval = vstusb_complete_urb(urb, &done, timeout, &cnt);
-		if (retval) {
-			dev_err(&dev->dev, "%s: error %d completing urb %d\n",
-				__func__, retval, pipe);
-		}
-
-		break;
-	case IOCTL_VSTUSB_RECV_PIPE:
-
-		if ((usb_data.count == 0) || (usb_data.count > VST_MAXBUFFER)) {
-			mutex_unlock(&vstdev->lock);
-			retval = -EINVAL;
-			goto exit;
-		}
-
-		buffer = kmalloc(usb_data.count, GFP_KERNEL);
-		if (buffer == NULL) {
-			mutex_unlock(&vstdev->lock);
-			retval = -ENOMEM;
-			goto exit;
-		}
-
-		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!urb) {
-			mutex_unlock(&vstdev->lock);
-			retval = -ENOMEM;
-			goto exit;
-		}
-
-		timeout = usb_data.timeout_ms;
-
-		pipe = usb_rcvbulkpipe(dev, usb_data.pipe);
-
-		usb_anchor_urb(urb, &vstdev->submitted);
-		retval = vstusb_fill_and_send_urb(urb, dev, pipe, buffer,
-						  usb_data.count, &done);
-		mutex_unlock(&vstdev->lock);
-		if (retval) {
-			usb_unanchor_urb(urb);
-			dev_err(&dev->dev,
-				"%s: error %d filling and sending urb %d\n",
-				__func__, retval, pipe);
-			goto exit;
-		}
-
-		retval = vstusb_complete_urb(urb, &done, timeout, &cnt);
-		if (retval) {
-			dev_err(&dev->dev, "%s: error %d completing urb %d\n",
-				__func__, retval, pipe);
-			goto exit;
-		}
-
-		if (copy_to_user(usb_data.buffer, buffer, cnt)) {
-			dev_err(&dev->dev, "%s: can't copy_to_user\n",
-				__func__);
-			retval = -EFAULT;
-			goto exit;
-		}
-
-		usb_data.count = cnt;
-		if (copy_to_user(data, &usb_data, sizeof(struct vstusb_args))) {
-			dev_err(&dev->dev, "%s: can't copy_to_user\n",
-				__func__);
-			retval = -EFAULT;
-		} else {
-			dev_dbg(&dev->dev, "%s: recv %zd bytes from pipe %d\n",
-				__func__, usb_data.count, usb_data.pipe);
-		}
-
-		break;
-
-	default:
-		mutex_unlock(&vstdev->lock);
-		dev_warn(&dev->dev, "ioctl_vstusb: invalid ioctl cmd %x\n",
-			 cmd);
-		return -EINVAL;
-		break;
-	}
-exit:
-	usb_free_urb(urb);
-	kfree(buffer);
-	return retval;
-}
-
-static const struct file_operations vstusb_fops = {
-	.owner =                THIS_MODULE,
-	.read =                 vstusb_read,
-	.write =                vstusb_write,
-	.unlocked_ioctl =       vstusb_ioctl,
-	.compat_ioctl =         vstusb_ioctl,
-	.open =                 vstusb_open,
-	.release =              vstusb_release,
-};
-
-static struct usb_class_driver usb_vstusb_class = {
-	.name =         "usb/vstusb%d",
-	.fops =         &vstusb_fops,
-	.minor_base =   VSTUSB_MINOR_BASE,
-};
-
-static int vstusb_probe(struct usb_interface *intf,
-			const struct usb_device_id *id)
-{
-	struct usb_device *dev = interface_to_usbdev(intf);
-	struct vstusb_device *vstdev;
-	int i;
-	int retval = 0;
-
-	/* allocate memory for our device state and intialize it */
-
-	vstdev = kzalloc(sizeof(*vstdev), GFP_KERNEL);
-	if (vstdev == NULL)
-		return -ENOMEM;
-
-	/* must do usb_get_dev() prior to kref_init() since the kref_put()
-	 * release function will do a usb_put_dev() */
-	usb_get_dev(dev);
-	kref_init(&vstdev->kref);
-	mutex_init(&vstdev->lock);
-
-	i = dev->descriptor.bcdDevice;
-
-	dev_dbg(&intf->dev, "Version %1d%1d.%1d%1d found at address %d\n",
-		(i & 0xF000) >> 12, (i & 0xF00) >> 8,
-		(i & 0xF0) >> 4, (i & 0xF), dev->devnum);
-
-	vstdev->present = 1;
-	vstdev->isopen = 0;
-	vstdev->usb_dev = dev;
-	init_usb_anchor(&vstdev->submitted);
-
-	usb_set_intfdata(intf, vstdev);
-	retval = usb_register_dev(intf, &usb_vstusb_class);
-	if (retval) {
-		dev_err(&intf->dev,
-			"%s: Not able to get a minor for this device.\n",
-			__func__);
-		usb_set_intfdata(intf, NULL);
-		kref_put(&vstdev->kref, vstusb_delete);
-		return retval;
-	}
-
-	/* let the user know what node this device is now attached to */
-	dev_info(&intf->dev,
-		 "VST USB Device #%d now attached to major %d minor %d\n",
-		 (intf->minor - VSTUSB_MINOR_BASE), USB_MAJOR, intf->minor);
-
-	dev_info(&intf->dev, "%s, %s\n", DRIVER_DESC, DRIVER_VERSION);
-
-	return retval;
-}
-
-static void vstusb_disconnect(struct usb_interface *intf)
-{
-	struct vstusb_device *vstdev = usb_get_intfdata(intf);
-
-	usb_deregister_dev(intf, &usb_vstusb_class);
-	usb_set_intfdata(intf, NULL);
-
-	if (vstdev) {
-
-		mutex_lock(&vstdev->lock);
-		vstdev->present = 0;
-
-		usb_kill_anchored_urbs(&vstdev->submitted);
-
-		mutex_unlock(&vstdev->lock);
-
-		kref_put(&vstdev->kref, vstusb_delete);
-	}
-
-}
-
-static int vstusb_suspend(struct usb_interface *intf, pm_message_t message)
-{
-	struct vstusb_device *vstdev = usb_get_intfdata(intf);
-	int time;
-	if (!vstdev)
-		return 0;
-
-	mutex_lock(&vstdev->lock);
-	time = usb_wait_anchor_empty_timeout(&vstdev->submitted, 1000);
-	if (!time)
-		usb_kill_anchored_urbs(&vstdev->submitted);
-	mutex_unlock(&vstdev->lock);
-
-	return 0;
-}
-
-static int vstusb_resume(struct usb_interface *intf)
-{
-	return 0;
-}
-
-static struct usb_driver vstusb_driver = {
-	.name =         "vstusb",
-	.probe =        vstusb_probe,
-	.disconnect =   vstusb_disconnect,
-	.suspend =      vstusb_suspend,
-	.resume =       vstusb_resume,
-	.id_table = id_table,
-};
-
-static int __init vstusb_init(void)
-{
-	int rc;
-
-	rc = usb_register(&vstusb_driver);
-	if (rc)
-		printk(KERN_ERR "%s: failed to register (%d)", __func__, rc);
-
-	return rc;
-}
-
-static void __exit vstusb_exit(void)
-{
-	usb_deregister(&vstusb_driver);
-}
-
-module_init(vstusb_init);
-module_exit(vstusb_exit);
-
-MODULE_AUTHOR("Dennis O'Brien/Stephen Ware");
-MODULE_DESCRIPTION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");

drivers/usb/mon/mon_bin.c

···
     char ev_type, int status)
 {
 	const struct usb_endpoint_descriptor *epd = &urb->ep->desc;
-	unsigned long flags;
 	struct timeval ts;
+	unsigned long flags;
 	unsigned int urb_length;
 	unsigned int offset;
 	unsigned int length;
···
 static void mon_bin_error(void *data, struct urb *urb, int error)
 {
 	struct mon_reader_bin *rp = data;
+	struct timeval ts;
 	unsigned long flags;
 	unsigned int offset;
 	struct mon_bin_hdr *ep;
+
+	do_gettimeofday(&ts);
 
 	spin_lock_irqsave(&rp->b_lock, flags);
 
···
 	ep->devnum = urb->dev->devnum;
 	ep->busnum = urb->dev->bus->busnum;
 	ep->id = (unsigned long) urb;
+	ep->ts_sec = ts.tv_sec;
+	ep->ts_usec = ts.tv_usec;
 	ep->status = error;
 
 	ep->flag_setup = '-';

drivers/usb/mon/mon_text.c

···
 	unsigned int stamp;
 
 	do_gettimeofday(&tval);
-	stamp = tval.tv_sec & 0xFFFF;	/* 2^32 = 4294967296. Limit to 4096s. */
+	stamp = tval.tv_sec & 0xFFF;	/* 2^32 = 4294967296. Limit to 4096s. */
 	stamp = stamp * 1000000 + tval.tv_usec;
 	return stamp;
 }
···
 
 	ep->type = 'E';
 	ep->id = (unsigned long) urb;
-	ep->busnum = 0;
+	ep->busnum = urb->dev->bus->busnum;
 	ep->devnum = urb->dev->devnum;
 	ep->epnum = usb_endpoint_num(&urb->ep->desc);
 	ep->xfertype = usb_endpoint_type(&urb->ep->desc);
 	ep->is_in = usb_urb_dir_in(urb);
-	ep->tstamp = 0;
+	ep->tstamp = mon_get_timestamp();
 	ep->length = 0;
 	ep->status = error;
 

drivers/usb/musb/blackfin.c

···
 	void __iomem *fifo = hw_ep->fifo;
 	void __iomem *epio = hw_ep->regs;
 	u8 epnum = hw_ep->epnum;
-	u16 dma_reg = 0;
 
 	prefetch((u8 *)src);
 
···
 	dump_fifo_data(src, len);
 
 	if (!ANOMALY_05000380 && epnum != 0) {
-		flush_dcache_range((unsigned int)src,
-			(unsigned int)(src + len));
+		u16 dma_reg;
+
+		flush_dcache_range((unsigned long)src,
+			(unsigned long)(src + len));
 
 		/* Setup DMA address register */
-		dma_reg = (u16) ((u32) src & 0xFFFF);
+		dma_reg = (u32)src;
 		bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_LOW), dma_reg);
 		SSYNC();
 
-		dma_reg = (u16) (((u32) src >> 16) & 0xFFFF);
+		dma_reg = (u32)src >> 16;
 		bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_HIGH), dma_reg);
 		SSYNC();
 
···
 		SSYNC();
 
 		if (unlikely((unsigned long)src & 0x01))
-			outsw_8((unsigned long)fifo, src,
-				len & 0x01 ? (len >> 1) + 1 : len >> 1);
+			outsw_8((unsigned long)fifo, src, (len + 1) >> 1);
 		else
-			outsw((unsigned long)fifo, src,
-				len & 0x01 ? (len >> 1) + 1 : len >> 1);
-
+			outsw((unsigned long)fifo, src, (len + 1) >> 1);
 	}
 }
 /*
···
 {
 	void __iomem *fifo = hw_ep->fifo;
 	u8 epnum = hw_ep->epnum;
-	u16 dma_reg = 0;
 
 	if (ANOMALY_05000467 && epnum != 0) {
+		u16 dma_reg;
 
-		invalidate_dcache_range((unsigned int)dst,
-			(unsigned int)(dst + len));
+		invalidate_dcache_range((unsigned long)dst,
+			(unsigned long)(dst + len));
 
 		/* Setup DMA address register */
-		dma_reg = (u16) ((u32) dst & 0xFFFF);
+		dma_reg = (u32)dst;
 		bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_LOW), dma_reg);
 		SSYNC();
 
-		dma_reg = (u16) (((u32) dst >> 16) & 0xFFFF);
+		dma_reg = (u32)dst >> 16;
 		bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_HIGH), dma_reg);
 		SSYNC();
 

drivers/usb/musb/cppi_dma.c

···
 
 		bd = tx_ch->head;
 
+		/*
+		 * If Head is null then this could mean that a abort interrupt
+		 * that needs to be acknowledged.
+		 */
 		if (NULL == bd) {
 			DBG(1, "null BD\n");
+			tx_ram->tx_complete = 0;
 			continue;
 		}
 
···
 
 	if (cppi_ch->transmit) {
 		struct cppi_tx_stateram __iomem *tx_ram;
-		int			enabled;
-
-		/* mask interrupts raised to signal teardown complete.  */
-		enabled = musb_readl(tibase, DAVINCI_TXCPPI_INTENAB_REG)
-				& (1 << cppi_ch->index);
-		if (enabled)
-			musb_writel(tibase, DAVINCI_TXCPPI_INTCLR_REG,
-					(1 << cppi_ch->index));
-
 		/* REVISIT put timeouts on these controller handshakes */
 
 		cppi_dump_tx(6, cppi_ch, " (teardown)");
···
 		do {
 			value = musb_readl(&tx_ram->tx_complete, 0);
 		} while (0xFFFFFFFC != value);
-		musb_writel(&tx_ram->tx_complete, 0, 0xFFFFFFFC);
 
 		/* FIXME clean up the transfer state ... here?
 		 * the completion routine should get called with
···
 		musb_writew(regs, MUSB_TXCSR, value);
 		musb_writew(regs, MUSB_TXCSR, value);
 
-		/* While we scrub the TX state RAM, ensure that we clean
-		 * up any interrupt that's currently asserted:
+		/*
 		 * 1. Write to completion Ptr value 0x1(bit 0 set)
 		 *    (write back mode)
-		 * 2. Write to completion Ptr value 0x0(bit 0 cleared)
-		 *    (compare mode)
-		 * Value written is compared(for bits 31:2) and when
-		 * equal, interrupt is deasserted.
+		 * 2. Wait for abort interrupt and then put the channel in
+		 *    compare mode by writing 1 to the tx_complete register.
 		 */
 		cppi_reset_tx(tx_ram, 1);
-		musb_writel(&tx_ram->tx_complete, 0, 0);
-
-		/* re-enable interrupt */
-		if (enabled)
-			musb_writel(tibase, DAVINCI_TXCPPI_INTENAB_REG,
-					(1 << cppi_ch->index));
-
+		cppi_ch->head = 0;
+		musb_writel(&tx_ram->tx_complete, 0, 1);
 		cppi_dump_tx(5, cppi_ch, " (done teardown)");
 
 		/* REVISIT tx side _should_ clean up the same way

drivers/usb/musb/musb_core.c

···
 		handled = IRQ_HANDLED;
 	}
 
+
+	if (int_usb & MUSB_INTR_SUSPEND) {
+		DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
+				otg_state_string(musb), devctl, power);
+		handled = IRQ_HANDLED;
+
+		switch (musb->xceiv->state) {
+#ifdef	CONFIG_USB_MUSB_OTG
+		case OTG_STATE_A_PERIPHERAL:
+			/* We also come here if the cable is removed, since
+			 * this silicon doesn't report ID-no-longer-grounded.
+			 *
+			 * We depend on T(a_wait_bcon) to shut us down, and
+			 * hope users don't do anything dicey during this
+			 * undesired detour through A_WAIT_BCON.
+			 */
+			musb_hnp_stop(musb);
+			usb_hcd_resume_root_hub(musb_to_hcd(musb));
+			musb_root_disconnect(musb);
+			musb_platform_try_idle(musb, jiffies
+					+ msecs_to_jiffies(musb->a_wait_bcon
+						? : OTG_TIME_A_WAIT_BCON));
+
+			break;
+#endif
+		case OTG_STATE_B_IDLE:
+			if (!musb->is_active)
+				break;
+		case OTG_STATE_B_PERIPHERAL:
+			musb_g_suspend(musb);
+			musb->is_active = is_otg_enabled(musb)
+					&& musb->xceiv->gadget->b_hnp_enable;
+			if (musb->is_active) {
+#ifdef	CONFIG_USB_MUSB_OTG
+				musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
+				DBG(1, "HNP: Setting timer for b_ase0_brst\n");
+				mod_timer(&musb->otg_timer, jiffies
+					+ msecs_to_jiffies(
+							OTG_TIME_B_ASE0_BRST));
+#endif
+			}
+			break;
+		case OTG_STATE_A_WAIT_BCON:
+			if (musb->a_wait_bcon != 0)
+				musb_platform_try_idle(musb, jiffies
+					+ msecs_to_jiffies(musb->a_wait_bcon));
+			break;
+		case OTG_STATE_A_HOST:
+			musb->xceiv->state = OTG_STATE_A_SUSPEND;
+			musb->is_active = is_otg_enabled(musb)
+					&& musb->xceiv->host->b_hnp_enable;
+			break;
+		case OTG_STATE_B_HOST:
+			/* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */
+			DBG(1, "REVISIT: SUSPEND as B_HOST\n");
+			break;
+		default:
+			/* "should not happen" */
+			musb->is_active = 0;
+			break;
+		}
+	}
+
 	if (int_usb & MUSB_INTR_CONNECT) {
 		struct usb_hcd *hcd = musb_to_hcd(musb);
 
···
 	}
 #endif	/* CONFIG_USB_MUSB_HDRC_HCD */
 
-	/* mentor saves a bit: bus reset and babble share the same irq.
-	 * only host sees babble; only peripheral sees bus reset.
-	 */
-	if (int_usb & MUSB_INTR_RESET) {
-		if (is_host_capable() && (devctl & MUSB_DEVCTL_HM) != 0) {
-			/*
-			 * Looks like non-HS BABBLE can be ignored, but
-			 * HS BABBLE is an error condition. For HS the solution
-			 * is to avoid babble in the first place and fix what
-			 * caused BABBLE. When HS BABBLE happens we can only
-			 * stop the session.
-			 */
-			if (devctl & (MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV))
-				DBG(1, "BABBLE devctl: %02x\n", devctl);
-			else {
-				ERR("Stopping host session -- babble\n");
-				musb_writeb(mbase, MUSB_DEVCTL, 0);
-			}
-		} else if (is_peripheral_capable()) {
-			DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
-			switch (musb->xceiv->state) {
-#ifdef CONFIG_USB_OTG
-			case OTG_STATE_A_SUSPEND:
-				/* We need to ignore disconnect on suspend
-				 * otherwise tusb 2.0 won't reconnect after a
-				 * power cycle, which breaks otg compliance.
-				 */
-				musb->ignore_disconnect = 1;
-				musb_g_reset(musb);
-				/* FALLTHROUGH */
-			case OTG_STATE_A_WAIT_BCON:	/* OPT TD.4.7-900ms */
-				/* never use invalid T(a_wait_bcon) */
-				DBG(1, "HNP: in %s, %d msec timeout\n",
-						otg_state_string(musb),
-						TA_WAIT_BCON(musb));
-				mod_timer(&musb->otg_timer, jiffies
-					+ msecs_to_jiffies(TA_WAIT_BCON(musb)));
-				break;
-			case OTG_STATE_A_PERIPHERAL:
-				musb->ignore_disconnect = 0;
-				del_timer(&musb->otg_timer);
-				musb_g_reset(musb);
-				break;
-			case OTG_STATE_B_WAIT_ACON:
-				DBG(1, "HNP: RESET (%s), to b_peripheral\n",
-					otg_state_string(musb));
-				musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
-				musb_g_reset(musb);
-				break;
-#endif
-			case OTG_STATE_B_IDLE:
-				musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
-				/* FALLTHROUGH */
-			case OTG_STATE_B_PERIPHERAL:
-				musb_g_reset(musb);
-				break;
-			default:
-				DBG(1, "Unhandled BUS RESET as %s\n",
-					otg_state_string(musb));
-			}
-		}
-
-		handled = IRQ_HANDLED;
-	}
-	schedule_work(&musb->irq_work);
-
-	return handled;
-}
-
-/*
- * Interrupt Service Routine to record USB "global" interrupts.
- * Since these do not happen often and signify things of
- * paramount importance, it seems OK to check them individually;
- * the order of the tests is specified in the manual
- *
- * @param musb instance pointer
- * @param int_usb register contents
- * @param devctl
- * @param power
- */
-static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb,
-				u8 devctl, u8 power)
-{
-	irqreturn_t handled = IRQ_NONE;
-
-#if 0
-/* REVISIT ... this would be for multiplexing periodic endpoints, or
- * supporting transfer phasing to prevent exceeding ISO bandwidth
- * limits of a given frame or microframe.
- *
- * It's not needed for peripheral side, which dedicates endpoints;
- * though it _might_ use SOF irqs for other purposes.
- *
- * And it's not currently needed for host side, which also dedicates
- * endpoints, relies on TX/RX interval registers, and isn't claimed
- * to support ISO transfers yet.
- */
-	if (int_usb & MUSB_INTR_SOF) {
-		void __iomem *mbase = musb->mregs;
-		struct musb_hw_ep	*ep;
-		u8 epnum;
-		u16 frame;
-
-		DBG(6, "START_OF_FRAME\n");
-		handled = IRQ_HANDLED;
-
-		/* start any periodic Tx transfers waiting for current frame */
-		frame = musb_readw(mbase, MUSB_FRAME);
-		ep = musb->endpoints;
-		for (epnum = 1; (epnum < musb->nr_endpoints)
-					&& (musb->epmask >= (1 << epnum));
-				epnum++, ep++) {
-			/*
-			 * FIXME handle framecounter wraps (12 bits)
-			 * eliminate duplicated StartUrb logic
-			 */
-			if (ep->dwWaitFrame >= frame) {
-				ep->dwWaitFrame = 0;
-				pr_debug("SOF --> periodic TX%s on %d\n",
-					ep->tx_channel ? " DMA" : "",
-					epnum);
-				if (!ep->tx_channel)
-					musb_h_tx_start(musb, epnum);
-				else
-					cppi_hostdma_start(musb, epnum);
-			}
-		}		/* end of for loop */
-	}
-#endif
-
 	if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) {
 		DBG(1, "DISCONNECT (%s) as %s, devctl %02x\n",
 				otg_state_string(musb),
···
 				otg_state_string(musb));
 			break;
 		}
-
-		schedule_work(&musb->irq_work);
 	}
 
-	if (int_usb & MUSB_INTR_SUSPEND) {
-		DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
-				otg_state_string(musb), devctl, power);
+	/* mentor saves a bit: bus reset and babble share the same irq.
+	 * only host sees babble; only peripheral sees bus reset.
+	 */
+	if (int_usb & MUSB_INTR_RESET) {
+		handled = IRQ_HANDLED;
+		if (is_host_capable() && (devctl & MUSB_DEVCTL_HM) != 0) {
+			/*
+			 * Looks like non-HS BABBLE can be ignored, but
+			 * HS BABBLE is an error condition. For HS the solution
+			 * is to avoid babble in the first place and fix what
+			 * caused BABBLE. When HS BABBLE happens we can only
+			 * stop the session.
+			 */
+			if (devctl & (MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV))
+				DBG(1, "BABBLE devctl: %02x\n", devctl);
+			else {
+				ERR("Stopping host session -- babble\n");
+				musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
+			}
+		} else if (is_peripheral_capable()) {
+			DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
+			switch (musb->xceiv->state) {
+#ifdef CONFIG_USB_OTG
+			case OTG_STATE_A_SUSPEND:
+				/* We need to ignore disconnect on suspend
+				 * otherwise tusb 2.0 won't reconnect after a
+				 * power cycle, which breaks otg compliance.
+				 */
+				musb->ignore_disconnect = 1;
+				musb_g_reset(musb);
+				/* FALLTHROUGH */
+			case OTG_STATE_A_WAIT_BCON:	/* OPT TD.4.7-900ms */
+				/* never use invalid T(a_wait_bcon) */
+				DBG(1, "HNP: in %s, %d msec timeout\n",
+						otg_state_string(musb),
+						TA_WAIT_BCON(musb));
+				mod_timer(&musb->otg_timer, jiffies
+					+ msecs_to_jiffies(TA_WAIT_BCON(musb)));
+				break;
+			case OTG_STATE_A_PERIPHERAL:
+				musb->ignore_disconnect = 0;
+				del_timer(&musb->otg_timer);
+				musb_g_reset(musb);
+				break;
+			case OTG_STATE_B_WAIT_ACON:
+				DBG(1, "HNP: RESET (%s), to b_peripheral\n",
+					otg_state_string(musb));
+				musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
+				musb_g_reset(musb);
+				break;
+#endif
+			case OTG_STATE_B_IDLE:
+				musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
+				/* FALLTHROUGH */
+			case OTG_STATE_B_PERIPHERAL:
+				musb_g_reset(musb);
+				break;
+			default:
+				DBG(1, "Unhandled BUS RESET as %s\n",
+					otg_state_string(musb));
+			}
+		}
+	}
+
+#if 0
+/* REVISIT ... this would be for multiplexing periodic endpoints, or
+ * supporting transfer phasing to prevent exceeding ISO bandwidth
+ * limits of a given frame or microframe.
+ *
+ * It's not needed for peripheral side, which dedicates endpoints;
+ * though it _might_ use SOF irqs for other purposes.
+ *
+ * And it's not currently needed for host side, which also dedicates
+ * endpoints, relies on TX/RX interval registers, and isn't claimed
+ * to support ISO transfers yet.
+ */
+	if (int_usb & MUSB_INTR_SOF) {
+		void __iomem *mbase = musb->mregs;
+		struct musb_hw_ep	*ep;
+		u8 epnum;
+		u16 frame;
+
+		DBG(6, "START_OF_FRAME\n");
 		handled = IRQ_HANDLED;
 
-		switch (musb->xceiv->state) {
-#ifdef	CONFIG_USB_MUSB_OTG
-		case OTG_STATE_A_PERIPHERAL:
-			/* We also come here if the cable is removed, since
-			 * this silicon doesn't report ID-no-longer-grounded.
-			 *
-			 * We depend on T(a_wait_bcon) to shut us down, and
-			 * hope users don't do anything dicey during this
-			 * undesired detour through A_WAIT_BCON.
+		/* start any periodic Tx transfers waiting for current frame */
+		frame = musb_readw(mbase, MUSB_FRAME);
+		ep = musb->endpoints;
+		for (epnum = 1; (epnum < musb->nr_endpoints)
+					&& (musb->epmask >= (1 << epnum));
+				epnum++, ep++) {
+			/*
+			 * FIXME handle framecounter wraps (12 bits)
+			 * eliminate duplicated StartUrb logic
 			 */
-			musb_hnp_stop(musb);
-			usb_hcd_resume_root_hub(musb_to_hcd(musb));
-			musb_root_disconnect(musb);
-			musb_platform_try_idle(musb, jiffies
-					+ msecs_to_jiffies(musb->a_wait_bcon
-						? : OTG_TIME_A_WAIT_BCON));
-			break;
-#endif
-		case OTG_STATE_B_PERIPHERAL:
-			musb_g_suspend(musb);
-			musb->is_active = is_otg_enabled(musb)
-					&& musb->xceiv->gadget->b_hnp_enable;
-			if (musb->is_active) {
-#ifdef	CONFIG_USB_MUSB_OTG
-				musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
-				DBG(1, "HNP: Setting timer for b_ase0_brst\n");
-				mod_timer(&musb->otg_timer, jiffies
-					+ msecs_to_jiffies(
-							OTG_TIME_B_ASE0_BRST));
-#endif
+			if (ep->dwWaitFrame >= frame) {
+				ep->dwWaitFrame = 0;
+				pr_debug("SOF --> periodic TX%s on %d\n",
+					ep->tx_channel ? " DMA" : "",
+					epnum);
+				if (!ep->tx_channel)
+					musb_h_tx_start(musb, epnum);
+				else
+					cppi_hostdma_start(musb, epnum);
 			}
-			break;
-		case OTG_STATE_A_WAIT_BCON:
-			if (musb->a_wait_bcon != 0)
-				musb_platform_try_idle(musb, jiffies
-					+ msecs_to_jiffies(musb->a_wait_bcon));
-			break;
-		case OTG_STATE_A_HOST:
-			musb->xceiv->state = OTG_STATE_A_SUSPEND;
-			musb->is_active = is_otg_enabled(musb)
-					&& musb->xceiv->host->b_hnp_enable;
-			break;
-		case OTG_STATE_B_HOST:
-			/* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */
-			DBG(1, "REVISIT: SUSPEND as B_HOST\n");
-			break;
-		default:
-			/* "should not happen" */
-			musb->is_active = 0;
-			break;
-		}
-		schedule_work(&musb->irq_work);
+		}		/* end of for loop */
 	}
+#endif
 
+	schedule_work(&musb->irq_work);
 
 	return handled;
 }
···
 { .hw_ep_num = 15, .style = FIFO_RXTX, .maxpacket = 1024, },
 };
 
+/* mode 5 - fits in 8KB */
+static struct fifo_cfg __initdata mode_5_cfg[] = {
+{ .hw_ep_num =  1, .style = FIFO_TX,   .maxpacket = 512, },
+{ .hw_ep_num =  1, .style = FIFO_RX,   .maxpacket = 512, },
+{ .hw_ep_num =  2, .style = FIFO_TX,   .maxpacket = 512, },
+{ .hw_ep_num =  2, .style = FIFO_RX,   .maxpacket = 512, },
+{ .hw_ep_num =  3, .style = FIFO_TX,   .maxpacket = 512, },
+{ .hw_ep_num =  3, .style = FIFO_RX,   .maxpacket = 512, },
+{ .hw_ep_num =  4, .style = FIFO_TX,   .maxpacket = 512, },
+{ .hw_ep_num =  4, .style = FIFO_RX,   .maxpacket = 512, },
+{ .hw_ep_num =  5, .style = FIFO_TX,   .maxpacket = 512, },
+{ .hw_ep_num =  5, .style = FIFO_RX,   .maxpacket = 512, },
+{ .hw_ep_num =  6, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num =  6, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num =  7, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num =  7, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num =  8, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num =  8, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num =  9, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num =  9, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num = 10, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num = 10, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num = 11, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num = 11, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num = 12, .style = FIFO_TX,   .maxpacket = 32, },
+{ .hw_ep_num = 12, .style = FIFO_RX,   .maxpacket = 32, },
+{ .hw_ep_num = 13, .style = FIFO_RXTX, .maxpacket = 512, },
+{ .hw_ep_num = 14, .style = FIFO_RXTX, .maxpacket = 1024, },
+{ .hw_ep_num = 15, .style = FIFO_RXTX, .maxpacket = 1024, },
+};
 
 /*
  * configure a fifo; for non-shared endpoints, this may be called
···
 		cfg = mode_4_cfg;
 		n = ARRAY_SIZE(mode_4_cfg);
 		break;
+	case 5:
+		cfg = mode_5_cfg;
+		n = ARRAY_SIZE(mode_5_cfg);
+		break;
 	}
 
 	printk(KERN_DEBUG "%s: setup fifo_mode %d\n",
···
  */
 static int __init musb_core_init(u16 musb_type, struct musb *musb)
 {
-#ifdef MUSB_AHB_ID
-	u32 data;
-#endif
 	u8 reg;
 	char *type;
 	char aInfo[90], aRevision[32], aDate[12];
···
 	reg = musb_read_configdata(mbase);
 
 	strcpy(aInfo, (reg & MUSB_CONFIGDATA_UTMIDW) ? "UTMI-16" : "UTMI-8");
-	if (reg & MUSB_CONFIGDATA_DYNFIFO)
+	if (reg & MUSB_CONFIGDATA_DYNFIFO) {
 		strcat(aInfo, ", dyn FIFOs");
+		musb->dyn_fifo = true;
+	}
 	if (reg & MUSB_CONFIGDATA_MPRXE) {
 		strcat(aInfo, ", bulk combine");
-#ifdef C_MP_RX
 		musb->bulk_combine = true;
-#else
-		strcat(aInfo, " (X)");		/* no driver support */
-#endif
 	}
 	if (reg & MUSB_CONFIGDATA_MPTXE) {
 		strcat(aInfo, ", bulk split");
-#ifdef C_MP_TX
 		musb->bulk_split = true;
-#else
-		strcat(aInfo, " (X)");		/* no driver support */
-#endif
 	}
 	if (reg & MUSB_CONFIGDATA_HBRXE) {
 		strcat(aInfo, ", HB-ISO Rx");
···
 	printk(KERN_DEBUG "%s: ConfigData=0x%02x (%s)\n",
 			musb_driver_name, reg, aInfo);
 
-#ifdef MUSB_AHB_ID
-	data = musb_readl(mbase, 0x404);
-	sprintf(aDate, "%04d-%02x-%02x", (data & 0xffff),
-		(data >> 16) & 0xff, (data >> 24) & 0xff);
-	/* FIXME ID2 and ID3 are unused */
-	data = musb_readl(mbase, 0x408);
-	printk(KERN_DEBUG "ID2=%lx\n", (long unsigned)data);
-	data = musb_readl(mbase, 0x40c);
-	printk(KERN_DEBUG "ID3=%lx\n", (long unsigned)data);
-	reg = musb_readb(mbase, 0x400);
-	musb_type = ('M' == reg) ? MUSB_CONTROLLER_MHDRC : MUSB_CONTROLLER_HDRC;
-#else
 	aDate[0] = 0;
-#endif
 	if (MUSB_CONTROLLER_MHDRC == musb_type) {
 		musb->is_multipoint = 1;
 		type = "M";
···
 	musb->nr_endpoints = 1;
 	musb->epmask = 1;
 
-	if (reg & MUSB_CONFIGDATA_DYNFIFO) {
-		if (musb->config->dyn_fifo)
-			status = ep_config_from_table(musb);
-		else {
-			ERR("reconfigure software for Dynamic FIFOs\n");
-			status = -ENODEV;
-		}
-	} else {
-		if (!musb->config->dyn_fifo)
-			status = ep_config_from_hw(musb);
-		else {
-			ERR("reconfigure software for static FIFOs\n");
-			return -ENODEV;
-		}
-	}
+	if (musb->dyn_fifo)
+		status = ep_config_from_table(musb);
+	else
+		status = ep_config_from_hw(musb);
 
 	if (status < 0)
 		return status;
···
 		ep_num++;
 	}
 
-	/* finish handling "global" interrupts after handling fifos */
-	if (musb->int_usb)
-		retval |= musb_stage2_irq(musb,
-				musb->int_usb, devctl, power);
-
 	return retval;
 }
 
···
 	unsigned long	val;
 
 	if (sscanf(buf, "%lu", &val) < 1) {
-		printk(KERN_ERR "Invalid VBUS timeout ms value\n");
+		dev_err(dev, "Invalid VBUS timeout ms value\n");
 		return -EINVAL;
 	}
 
···
 
 	if (sscanf(buf, "%hu", &srp) != 1
 			|| (srp != 1)) {
-		printk(KERN_ERR "SRP: Value must be 1\n");
+		dev_err(dev, "SRP: Value must be 1\n");
 		return -EINVAL;
 	}
 
···
 static DEVICE_ATTR(srp, 0644, NULL, musb_srp_store);
 
 #endif /* CONFIG_USB_GADGET_MUSB_HDRC */
+
+static struct attribute *musb_attributes[] = {
+	&dev_attr_mode.attr,
+	&dev_attr_vbus.attr,
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+	&dev_attr_srp.attr,
+#endif
+	NULL
+};
+
+static const struct attribute_group musb_attr_group = {
+	.attrs = musb_attributes,
+};
 
 #endif	/* sysfs */
 
···
 	 */
 
 #ifdef CONFIG_SYSFS
-	device_remove_file(musb->controller, &dev_attr_mode);
-	device_remove_file(musb->controller, &dev_attr_vbus);
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
-	device_remove_file(musb->controller, &dev_attr_srp);
-#endif
+	sysfs_remove_group(&musb->controller->kobj, &musb_attr_group);
 #endif
 
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
···
 		musb->irq_wake = 0;
 	}
 
-	pr_info("%s: USB %s mode controller at %p using %s, IRQ %d\n",
-			musb_driver_name,
-			({char *s;
-			switch (musb->board_mode) {
-			case MUSB_HOST:		s = "Host"; break;
-			case MUSB_PERIPHERAL:	s = "Peripheral"; break;
-			default:		s = "OTG"; break;
-			}; s; }),
-			ctrl,
-			(is_dma_capable() && musb->dma_controller)
-				? "DMA" : "PIO",
-			musb->nIrq);
-
 	/* host side needs more setup */
 	if (is_host_enabled(musb)) {
 		struct usb_hcd	*hcd = musb_to_hcd(musb);
+		u8 busctl;
 
 		otg_set_host(musb->xceiv, &hcd->self);
 
···
 			hcd->self.otg_port = 1;
 		musb->xceiv->host = &hcd->self;
 		hcd->power_budget = 2 * (plat->power ? : 250);
+
+		/* program PHY to use external vBus if required */
+		if (plat->extvbus) {
+			busctl = musb_readb(musb->mregs, MUSB_ULPI_BUSCONTROL);
+			busctl |= MUSB_ULPI_USE_EXTVBUS;
+			musb_writeb(musb->mregs, MUSB_ULPI_BUSCONTROL, busctl);
+		}
 	}
 
 	/* For the host-only role, we can activate right away.
···
 	}
 
 #ifdef CONFIG_SYSFS
-	status = device_create_file(dev, &dev_attr_mode);
-	status = device_create_file(dev, &dev_attr_vbus);
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
-	status = device_create_file(dev, &dev_attr_srp);
-#endif /* CONFIG_USB_GADGET_MUSB_HDRC */
-	status = 0;
+	status = sysfs_create_group(&musb->controller->kobj, &musb_attr_group);
 #endif
 	if (status)
 		goto fail2;
 
+	dev_info(dev, "USB %s mode controller at %p using %s, IRQ %d\n",
+			({char *s;
+			 switch (musb->board_mode) {
+			 case MUSB_HOST:		s = "Host"; break;
+			 case MUSB_PERIPHERAL:	s = "Peripheral"; break;
+			 default:		s = "OTG"; break;
+			 }; s; }),
+			ctrl,
+			(is_dma_capable() && musb->dma_controller)
+			? "DMA" : "PIO",
+			musb->nIrq);
+
 	return 0;
 
 fail2:
-#ifdef CONFIG_SYSFS
-	device_remove_file(musb->controller, &dev_attr_mode);
-	device_remove_file(musb->controller, &dev_attr_vbus);
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
-	device_remove_file(musb->controller, &dev_attr_srp);
-#endif
-#endif
 	musb_platform_exit(musb);
 fail:
 	dev_err(musb->controller,
···
 {
 	struct device	*dev = &pdev->dev;
 	int		irq = platform_get_irq(pdev, 0);
+	int		status;
 	struct resource	*iomem;
 	void __iomem	*base;
 
···
 	if (!iomem || irq == 0)
 		return -ENODEV;
 
-	base = ioremap(iomem->start, iomem->end - iomem->start + 1);
+	base = ioremap(iomem->start, resource_size(iomem));
 	if (!base) {
 		dev_err(dev, "ioremap failed\n");
 		return -ENOMEM;
···
 	/* clobbered by use_dma=n */
 	orig_dma_mask = dev->dma_mask;
 #endif
-	return musb_init_controller(dev, irq, base);
+
+	status = musb_init_controller(dev, irq, base);
+	if (status < 0)
+		iounmap(base);
+
+	return status;
 }
 
 static int __exit musb_remove(struct platform_device *pdev)
···
 
 #ifdef	CONFIG_PM
 
+static struct musb_context_registers musb_context;
+
+void musb_save_context(struct musb *musb)
+{
+	int i;
+	void __iomem *musb_base = musb->mregs;
+
+	if (is_host_enabled(musb)) {
+		musb_context.frame = musb_readw(musb_base, MUSB_FRAME);
+		musb_context.testmode = musb_readb(musb_base, MUSB_TESTMODE);
+	}
+	musb_context.power = musb_readb(musb_base, MUSB_POWER);
+	musb_context.intrtxe = musb_readw(musb_base, MUSB_INTRTXE);
+	musb_context.intrrxe = musb_readw(musb_base, MUSB_INTRRXE);
+	musb_context.intrusbe = musb_readb(musb_base, MUSB_INTRUSBE);
+	musb_context.index = musb_readb(musb_base, MUSB_INDEX);
+	musb_context.devctl = musb_readb(musb_base, MUSB_DEVCTL);
+
+	for (i = 0; i < MUSB_C_NUM_EPS; ++i) {
+		musb_writeb(musb_base, MUSB_INDEX, i);
+		musb_context.index_regs[i].txmaxp =
+			musb_readw(musb_base, 0x10 + MUSB_TXMAXP);
+		musb_context.index_regs[i].txcsr =
+			musb_readw(musb_base, 0x10 + MUSB_TXCSR);
+		musb_context.index_regs[i].rxmaxp =
+			musb_readw(musb_base, 0x10 + MUSB_RXMAXP);
+		musb_context.index_regs[i].rxcsr =
+			musb_readw(musb_base, 0x10 + MUSB_RXCSR);
+
+		if (musb->dyn_fifo) {
+			musb_context.index_regs[i].txfifoadd =
+					musb_read_txfifoadd(musb_base);
+			musb_context.index_regs[i].rxfifoadd =
+					musb_read_rxfifoadd(musb_base);
+			musb_context.index_regs[i].txfifosz =
+					musb_read_txfifosz(musb_base);
+			musb_context.index_regs[i].rxfifosz =
+					musb_read_rxfifosz(musb_base);
+		}
+		if (is_host_enabled(musb)) {
+			musb_context.index_regs[i].txtype =
+				musb_readb(musb_base, 0x10 + MUSB_TXTYPE);
+			musb_context.index_regs[i].txinterval =
+				musb_readb(musb_base, 0x10 + MUSB_TXINTERVAL);
+			musb_context.index_regs[i].rxtype =
+				musb_readb(musb_base, 0x10 + MUSB_RXTYPE);
+			musb_context.index_regs[i].rxinterval =
+				musb_readb(musb_base, 0x10 + MUSB_RXINTERVAL);
+
+			musb_context.index_regs[i].txfunaddr =
+				musb_read_txfunaddr(musb_base, i);
+			musb_context.index_regs[i].txhubaddr =
+				musb_read_txhubaddr(musb_base, i);
+			musb_context.index_regs[i].txhubport =
+				musb_read_txhubport(musb_base, i);
+
+			musb_context.index_regs[i].rxfunaddr =
+				musb_read_rxfunaddr(musb_base, i);
+			musb_context.index_regs[i].rxhubaddr =
+				musb_read_rxhubaddr(musb_base, i);
+			musb_context.index_regs[i].rxhubport =
+				musb_read_rxhubport(musb_base, i);
+		}
+	}
+
+	musb_writeb(musb_base, MUSB_INDEX, musb_context.index);
+
+	musb_platform_save_context(musb, &musb_context);
+}
+
+void musb_restore_context(struct musb *musb)
+{
+	int i;
+	void __iomem *musb_base = musb->mregs;
+	void __iomem *ep_target_regs;
+
+	musb_platform_restore_context(musb, &musb_context);
+
+	if (is_host_enabled(musb)) {
+		musb_writew(musb_base, MUSB_FRAME, musb_context.frame);
+		musb_writeb(musb_base, MUSB_TESTMODE, musb_context.testmode);
+	}
+	musb_writeb(musb_base, MUSB_POWER, musb_context.power);
+	musb_writew(musb_base, MUSB_INTRTXE, musb_context.intrtxe);
+	musb_writew(musb_base, MUSB_INTRRXE, musb_context.intrrxe);
+	musb_writeb(musb_base, MUSB_INTRUSBE, musb_context.intrusbe);
+	musb_writeb(musb_base, MUSB_DEVCTL, musb_context.devctl);
+
+	for (i = 0; i < MUSB_C_NUM_EPS; ++i) {
+		musb_writeb(musb_base, MUSB_INDEX, i);
+		musb_writew(musb_base, 0x10 + MUSB_TXMAXP,
+			musb_context.index_regs[i].txmaxp);
+		musb_writew(musb_base, 0x10 + MUSB_TXCSR,
+			musb_context.index_regs[i].txcsr);
+		musb_writew(musb_base, 0x10 + MUSB_RXMAXP,
+			musb_context.index_regs[i].rxmaxp);
+		musb_writew(musb_base, 0x10 + MUSB_RXCSR,
+			musb_context.index_regs[i].rxcsr);
+
+		if (musb->dyn_fifo) {
+			musb_write_txfifosz(musb_base,
+				musb_context.index_regs[i].txfifosz);
+			musb_write_rxfifosz(musb_base,
+				musb_context.index_regs[i].rxfifosz);
+			musb_write_txfifoadd(musb_base,
+				musb_context.index_regs[i].txfifoadd);
+			musb_write_rxfifoadd(musb_base,
+				musb_context.index_regs[i].rxfifoadd);
+		}
+
+		if (is_host_enabled(musb)) {
+			musb_writeb(musb_base, 0x10 + MUSB_TXTYPE,
+				musb_context.index_regs[i].txtype);
+			musb_writeb(musb_base, 0x10 + MUSB_TXINTERVAL,
+				musb_context.index_regs[i].txinterval);
+			musb_writeb(musb_base, 0x10 + MUSB_RXTYPE,
+				musb_context.index_regs[i].rxtype);
+			musb_writeb(musb_base, 0x10 + MUSB_RXINTERVAL,
+
+			musb_context.index_regs[i].rxinterval);
+			musb_write_txfunaddr(musb_base, i,
+				musb_context.index_regs[i].txfunaddr);
+			musb_write_txhubaddr(musb_base, i,
+				musb_context.index_regs[i].txhubaddr);
+			musb_write_txhubport(musb_base, i,
+				musb_context.index_regs[i].txhubport);
+
+			ep_target_regs =
+				musb_read_target_reg_base(i, musb_base);
+
+			musb_write_rxfunaddr(ep_target_regs,
+				musb_context.index_regs[i].rxfunaddr);
+			musb_write_rxhubaddr(ep_target_regs,
+				musb_context.index_regs[i].rxhubaddr);
+			musb_write_rxhubport(ep_target_regs,
+				musb_context.index_regs[i].rxhubport);
+		}
+	}
+
+	musb_writeb(musb_base, MUSB_INDEX, musb_context.index);
+}
+
 static int musb_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
···
 		 */
 	}
 
+	musb_save_context(musb);
+
 	if (musb->set_clock)
 		musb->set_clock(musb->clock, 0);
 	else
···
 		musb->set_clock(musb->clock, 1);
 	else
 		clk_enable(musb->clock);
+
+	musb_restore_context(musb);
 
 	/* for static cmos like DaVinci, register values were preserved
 	 * unless for some reason the whole soc powered down or the USB

drivers/usb/musb/musb_core.h

···
 struct musb_hw_ep;
 struct musb_ep;
 
+/* Helper defines for struct musb->hwvers */
+#define MUSB_HWVERS_MAJOR(x)	((x >> 10) & 0x1f)
+#define MUSB_HWVERS_MINOR(x)	(x & 0x3ff)
+#define MUSB_HWVERS_RC		0x8000
+#define MUSB_HWVERS_1300	0x52C
+#define MUSB_HWVERS_1400	0x590
+#define MUSB_HWVERS_1800	0x720
+#define MUSB_HWVERS_1900	0x784
+#define MUSB_HWVERS_2000	0x800
 
 #include "musb_debug.h"
 #include "musb_dma.h"
···
 	struct clk		*clock;
 	irqreturn_t		(*isr)(int, void *);
 	struct work_struct	irq_work;
-#define MUSB_HWVERS_MAJOR(x)	((x >> 10) & 0x1f)
-#define MUSB_HWVERS_MINOR(x)	(x & 0x3ff)
-#define MUSB_HWVERS_RC		0x8000
-#define MUSB_HWVERS_1300	0x52C
-#define MUSB_HWVERS_1400	0x590
-#define MUSB_HWVERS_1800	0x720
-#define MUSB_HWVERS_2000	0x800
 	u16			hwvers;
 
 /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
···
 
 	unsigned		hb_iso_rx:1;	/* high bandwidth iso rx? */
 	unsigned		hb_iso_tx:1;	/* high bandwidth iso tx? */
+	unsigned		dyn_fifo:1;	/* dynamic FIFO supported? */
 
-#ifdef C_MP_TX
-	unsigned bulk_split:1;
+	unsigned		bulk_split:1;
 #define	can_bulk_split(musb,type) \
-		(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_split)
-#else
-#define	can_bulk_split(musb, type)	0
-#endif
+	(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_split)
 
-#ifdef C_MP_RX
-	unsigned bulk_combine:1;
+	unsigned		bulk_combine:1;
 #define	can_bulk_combine(musb,type) \
-		(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_combine)
-#else
-#define	can_bulk_combine(musb, type)	0
-#endif
+	(((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_combine)
 
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 	/* is_suspended means USB B_PERIPHERAL suspend */
···
 	struct proc_dir_entry *proc_entry;
 #endif
 };
+
+#ifdef CONFIG_PM
+struct musb_csr_regs {
+	/* FIFO registers */
+	u16 txmaxp, txcsr, rxmaxp, rxcsr;
+	u16 rxfifoadd, txfifoadd;
+	u8 txtype, txinterval, rxtype, rxinterval;
+	u8 rxfifosz, txfifosz;
+	u8 txfunaddr, txhubaddr, txhubport;
+	u8 rxfunaddr, rxhubaddr, rxhubport;
+};
+
+struct musb_context_registers {
+
+#if defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP2430)
+	u32 otg_sysconfig, otg_forcestandby;
+#endif
+	u8 power;
+	u16 intrtxe, intrrxe;
+	u8 intrusbe;
+	u16 frame;
+	u8 index, testmode;
+
+	u8 devctl, misc;
+
+	struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
+};
+
+#if defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP2430)
+extern void musb_platform_save_context(struct musb *musb,
+		struct musb_context_registers *musb_context);
+extern void musb_platform_restore_context(struct musb *musb,
+		struct musb_context_registers *musb_context);
+#else
+#define musb_platform_save_context(m, x)	do {} while (0)
+#define musb_platform_restore_context(m, x)	do {} while (0)
+#endif
+
+#endif
 
 static inline void musb_set_vbus(struct musb *musb, int is_on)
 {

drivers/usb/musb/musb_gadget.c

···
 		/* REVISIT if can_bulk_split(), use by updating "tmp";
 		 * likewise high bandwidth periodic tx
 		 */
-		musb_writew(regs, MUSB_TXMAXP, tmp);
+		/* Set TXMAXP with the FIFO size of the endpoint
+		 * to disable double buffering mode. Currently, It seems that double
+		 * buffering has problem if musb RTL revision number < 2.0.
+		 */
+		if (musb->hwvers < MUSB_HWVERS_2000)
+			musb_writew(regs, MUSB_TXMAXP, hw_ep->max_packet_sz_tx);
+		else
+			musb_writew(regs, MUSB_TXMAXP, tmp);
 
 		csr = MUSB_TXCSR_MODE | MUSB_TXCSR_CLRDATATOG;
 		if (musb_readw(regs, MUSB_TXCSR)
···
 		/* REVISIT if can_bulk_combine() use by updating "tmp"
 		 * likewise high bandwidth periodic rx
 		 */
-		musb_writew(regs, MUSB_RXMAXP, tmp);
+		/* Set RXMAXP with the FIFO size of the endpoint
+		 * to disable double buffering mode.
+		 */
+		if (musb->hwvers < MUSB_HWVERS_2000)
+			musb_writew(regs, MUSB_RXMAXP, hw_ep->max_packet_sz_rx);
+		else
+			musb_writew(regs, MUSB_RXMAXP, tmp);
 
 		/* force shared fifo to OUT-only mode */
 		if (hw_ep->is_shared_fifo) {
···
 		return -EINVAL;
 
 	/* driver must be initialized to support peripheral mode */
-	if (!musb || !(musb->board_mode == MUSB_OTG
-				|| musb->board_mode != MUSB_OTG)) {
+	if (!musb) {
 		DBG(1, "%s, no dev??\n", __func__);
 		return -ENODEV;
 	}

drivers/usb/musb/musb_host.c

···
 	musb_writeb(ep->regs, MUSB_RXTYPE, qh->type_reg);
 	musb_writeb(ep->regs, MUSB_RXINTERVAL, qh->intv_reg);
 	/* NOTE: bulk combining rewrites high bits of maxpacket */
-	musb_writew(ep->regs, MUSB_RXMAXP,
-			qh->maxpacket | ((qh->hb_mult - 1) << 11));
+	/* Set RXMAXP with the FIFO size of the endpoint
+	 * to disable double buffer mode.
+	 */
+	if (musb->hwvers < MUSB_HWVERS_2000)
+		musb_writew(ep->regs, MUSB_RXMAXP, ep->max_packet_sz_rx);
+	else
+		musb_writew(ep->regs, MUSB_RXMAXP,
+				qh->maxpacket | ((qh->hb_mult - 1) << 11));
 
 	ep->rx_reinit = 0;
 }
···
 	int			best_end, epnum;
 	struct musb_hw_ep	*hw_ep = NULL;
 	struct list_head	*head = NULL;
+	u8			toggle;
+	u8			txtype;
+	struct urb		*urb = next_urb(qh);
 
 	/* use fixed hardware for control and bulk */
 	if (qh->type == USB_ENDPOINT_XFER_CONTROL) {
···
 		diff -= (qh->maxpacket * qh->hb_mult);
 
 		if (diff >= 0 && best_diff > diff) {
+
+			/*
+			 * Mentor controller has a bug in that if we schedule
+			 * a BULK Tx transfer on an endpoint that had earlier
+			 * handled ISOC then the BULK transfer has to start on
+			 * a zero toggle.  If the BULK transfer starts on a 1
+			 * toggle then this transfer will fail as the mentor
+			 * controller starts the Bulk transfer on a 0 toggle
+			 * irrespective of the programming of the toggle bits
+			 * in the TXCSR register.  Check for this condition
+			 * while allocating the EP for a Tx Bulk transfer.  If
+			 * so skip this EP.
+			 */
+			hw_ep = musb->endpoints + epnum;
+			toggle = usb_gettoggle(urb->dev, qh->epnum, !is_in);
+			txtype = (musb_readb(hw_ep->regs, MUSB_TXTYPE)
+					>> 4) & 0x3;
+			if (!is_in && (qh->type == USB_ENDPOINT_XFER_BULK) &&
+				toggle && (txtype == USB_ENDPOINT_XFER_ISOC))
+				continue;
+
 			best_diff = diff;
 			best_end = epnum;
 		}

drivers/usb/musb/musb_regs.h

···
 #define MUSB_DEVCTL_HR		0x02
 #define MUSB_DEVCTL_SESSION	0x01
 
+/* MUSB ULPI VBUSCONTROL */
+#define MUSB_ULPI_USE_EXTVBUS	0x01
+#define MUSB_ULPI_USE_EXTVBUSIND 0x02
+
 /* TESTMODE */
 #define MUSB_TEST_FORCE_HOST	0x80
 #define MUSB_TEST_FIFO_ACCESS	0x40
···
 
 /* REVISIT: vctrl/vstatus: optional vendor utmi+phy register at 0x68 */
 #define MUSB_HWVERS		0x6C	/* 8 bit */
+#define MUSB_ULPI_BUSCONTROL	0x70	/* 8 bit */
 
 #define MUSB_EPINFO		0x78	/* 8 bit */
 #define MUSB_RAMINFO		0x79	/* 8 bit */
···
 	musb_writew(mbase, MUSB_RXFIFOADD, c_off);
 }
 
+static inline u8 musb_read_txfifosz(void __iomem *mbase)
+{
+	return musb_readb(mbase, MUSB_TXFIFOSZ);
+}
+
+static inline u16 musb_read_txfifoadd(void __iomem *mbase)
+{
+	return musb_readw(mbase, MUSB_TXFIFOADD);
+}
+
+static inline u8 musb_read_rxfifosz(void __iomem *mbase)
+{
+	return musb_readb(mbase, MUSB_RXFIFOSZ);
+}
+
+static inline u16  musb_read_rxfifoadd(void __iomem *mbase)
+{
+	return musb_readw(mbase, MUSB_RXFIFOADD);
+}
+
 static inline u8 musb_read_configdata(void __iomem *mbase)
 {
 	musb_writeb(mbase, MUSB_INDEX, 0);
···
 {
 	musb_writeb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBPORT),
 			qh_h_port_reg);
+}
+
+static inline u8 musb_read_rxfunaddr(void __iomem *mbase, u8 epnum)
+{
+	return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXFUNCADDR));
+}
+
+static inline u8 musb_read_rxhubaddr(void __iomem *mbase, u8 epnum)
+{
+	return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBADDR));
+}
+
+static inline u8 musb_read_rxhubport(void __iomem *mbase, u8 epnum)
+{
+	return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_RXHUBPORT));
+}
+
+static inline u8  musb_read_txfunaddr(void __iomem *mbase, u8 epnum)
+{
+	return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXFUNCADDR));
+}
+
+static inline u8  musb_read_txhubaddr(void __iomem *mbase, u8 epnum)
+{
+	return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBADDR));
+}
+
+static inline u8  musb_read_txhubport(void __iomem *mbase, u8 epnum)
+{
+	return musb_readb(mbase, MUSB_BUSCTL_OFFSET(epnum, MUSB_TXHUBPORT));
 }
 
 #else /* CONFIG_BLACKFIN */
···
 {
 }
 
+static inline u8 musb_read_txfifosz(void __iomem *mbase)
+{
+}
+
+static inline u16 musb_read_txfifoadd(void __iomem *mbase)
+{
+}
+
+static inline u8 musb_read_rxfifosz(void __iomem *mbase)
+{
+}
+
+static inline u16  musb_read_rxfifoadd(void __iomem *mbase)
+{
+}
+
 static inline u8 musb_read_configdata(void __iomem *mbase)
 {
 	return 0;
···
 
 static inline u16 musb_read_hwvers(void __iomem *mbase)
 {
-	return 0;
+	/*
+	 * This register is invisible on Blackfin, actually the MUSB
+	 * RTL version of Blackfin is 1.9, so just harcode its value.
+	 */
+	return MUSB_HWVERS_1900;
 }
 
 static inline void __iomem *musb_read_target_reg_base(u8 i, void __iomem *mbase)
···
 
 static inline void  musb_write_txhubport(void __iomem *mbase, u8 epnum,
 		u8 qh_h_port_reg)
+{
+}
+
+static inline u8 musb_read_rxfunaddr(void __iomem *mbase, u8 epnum)
+{
+}
+
+static inline u8 musb_read_rxhubaddr(void __iomem *mbase, u8 epnum)
+{
+}
+
+static inline u8 musb_read_rxhubport(void __iomem *mbase, u8 epnum)
+{
+}
+
+static inline u8  musb_read_txfunaddr(void __iomem *mbase, u8 epnum)
+{
+}
+
+static inline u8  musb_read_txhubaddr(void __iomem *mbase, u8 epnum)
+{
+}
+
+static inline void  musb_read_txhubport(void __iomem *mbase, u8 epnum)
 {
 }
 

drivers/usb/musb/musbhsdma.c

···
 	u8 bchannel;
 	u8 int_hsdma;
 
-	u32 addr;
+	u32 addr, count;
 	u16 csr;
 
 	spin_lock_irqsave(&musb->lock, flags);
 
 	int_hsdma = musb_readb(mbase, MUSB_HSDMA_INTR);
-	if (!int_hsdma)
-		goto done;
 
 #ifdef CONFIG_BLACKFIN
 	/* Clear DMA interrupt flags */
 	musb_writeb(mbase, MUSB_HSDMA_INTR, int_hsdma);
 #endif
+
+	if (!int_hsdma) {
+		DBG(2, "spurious DMA irq\n");
+
+		for (bchannel = 0; bchannel < MUSB_HSDMA_CHANNELS; bchannel++) {
+			musb_channel = (struct musb_dma_channel *)
+					&(controller->channel[bchannel]);
+			channel = &musb_channel->channel;
+			if (channel->status == MUSB_DMA_STATUS_BUSY) {
+				count = musb_read_hsdma_count(mbase, bchannel);
+
+				if (count == 0)
+					int_hsdma |= (1 << bchannel);
+			}
+		}
+
+		DBG(2, "int_hsdma = 0x%x\n", int_hsdma);
+
+		if (!int_hsdma)
+			goto done;
+	}
 
 	for (bchannel = 0; bchannel < MUSB_HSDMA_CHANNELS; bchannel++) {
 		if (int_hsdma & (1 << bchannel)) {

drivers/usb/musb/musbhsdma.h

···
 		    MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDRESS), \
 		    addr)
 
+#define musb_read_hsdma_count(mbase, bchannel)	\
+	musb_readl(mbase,	\
+		   MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT))
+
 #define musb_write_hsdma_count(mbase, bchannel, len) \
 	musb_writel(mbase, \
 		    MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT), \
···
 	musb_writew(mbase,
 		MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDR_HIGH),
 		((u16)(((u32) dma_addr >> 16) & 0xFFFF)));
+}
+
+static inline u32 musb_read_hsdma_count(void __iomem *mbase, u8 bchannel)
+{
+	u32 count = musb_readw(mbase,
+		MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH));
+
+	count = count << 16;
+
+	count |= musb_readw(mbase,
+		MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW));
+
+	return count;
 }
 
 static inline void musb_write_hsdma_count(void __iomem *mbase,

drivers/usb/musb/omap2430.c

···
 
 	musb_platform_resume(musb);
 
-	l = omap_readl(OTG_SYSCONFIG);
+	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
 	l &= ~ENABLEWAKEUP;	/* disable wakeup */
 	l &= ~NOSTDBY;		/* remove possible nostdby */
 	l |= SMARTSTDBY;	/* enable smart standby */
···
 	 */
 	if (!cpu_is_omap3430())
 		l |= AUTOIDLE;		/* enable auto idle */
-	omap_writel(l, OTG_SYSCONFIG);
+	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
 
-	l = omap_readl(OTG_INTERFSEL);
+	l = musb_readl(musb->mregs, OTG_INTERFSEL);
 	l |= ULPI_12PIN;
-	omap_writel(l, OTG_INTERFSEL);
+	musb_writel(musb->mregs, OTG_INTERFSEL, l);
 
 	pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
 			"sysstatus 0x%x, intrfsel 0x%x, simenable  0x%x\n",
-			omap_readl(OTG_REVISION), omap_readl(OTG_SYSCONFIG),
-			omap_readl(OTG_SYSSTATUS), omap_readl(OTG_INTERFSEL),
-			omap_readl(OTG_SIMENABLE));
+			musb_readl(musb->mregs, OTG_REVISION),
+			musb_readl(musb->mregs, OTG_SYSCONFIG),
+			musb_readl(musb->mregs, OTG_SYSSTATUS),
+			musb_readl(musb->mregs, OTG_INTERFSEL),
+			musb_readl(musb->mregs, OTG_SIMENABLE));
 
 	omap_vbus_power(musb, musb->board_mode == MUSB_HOST, 1);
 
···
 	return 0;
 }
 
+#ifdef CONFIG_PM
+void musb_platform_save_context(struct musb *musb,
+		struct musb_context_registers *musb_context)
+{
+	musb_context->otg_sysconfig = musb_readl(musb->mregs, OTG_SYSCONFIG);
+	musb_context->otg_forcestandby = musb_readl(musb->mregs, OTG_FORCESTDBY);
+}
+
+void musb_platform_restore_context(struct musb *musb,
+		struct musb_context_registers *musb_context)
+{
+	musb_writel(musb->mregs, OTG_SYSCONFIG, musb_context->otg_sysconfig);
+	musb_writel(musb->mregs, OTG_FORCESTDBY, musb_context->otg_forcestandby);
+}
+#endif
+
 int musb_platform_suspend(struct musb *musb)
 {
 	u32 l;
···
 		return 0;
 
 	/* in any role */
-	l = omap_readl(OTG_FORCESTDBY);
+	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
 	l |= ENABLEFORCE;	/* enable MSTANDBY */
-	omap_writel(l, OTG_FORCESTDBY);
+	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
 
-	l = omap_readl(OTG_SYSCONFIG);
+	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
 	l |= ENABLEWAKEUP;	/* enable wakeup */
-	omap_writel(l, OTG_SYSCONFIG);
+	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
 
 	otg_set_suspend(musb->xceiv, 1);
 
···
 	else
 		clk_enable(musb->clock);
 
-	l = omap_readl(OTG_SYSCONFIG);
+	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
 	l &= ~ENABLEWAKEUP;	/* disable wakeup */
-	omap_writel(l, OTG_SYSCONFIG);
+	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
 
-	l = omap_readl(OTG_FORCESTDBY);
+	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
 	l &= ~ENABLEFORCE;	/* disable MSTANDBY */
-	omap_writel(l, OTG_FORCESTDBY);
+	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
 
 	return 0;
 }

drivers/usb/musb/omap2430.h

···
 #ifndef __MUSB_OMAP243X_H__
 #define __MUSB_OMAP243X_H__
 
-#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3430)
-#include <mach/hardware.h>
 #include <plat/usb.h>
 
 /*
  * OMAP2430-specific definitions
  */
 
-#define MENTOR_BASE_OFFSET	0
-#if	defined(CONFIG_ARCH_OMAP2430)
-#define	OMAP_HSOTG_BASE		(OMAP243X_HS_BASE)
-#elif	defined(CONFIG_ARCH_OMAP3430)
-#define	OMAP_HSOTG_BASE		(OMAP34XX_HSUSB_OTG_BASE)
-#endif
-#define OMAP_HSOTG(offset)	(OMAP_HSOTG_BASE + 0x400 + (offset))
-#define OTG_REVISION		OMAP_HSOTG(0x0)
-#define OTG_SYSCONFIG		OMAP_HSOTG(0x4)
+#define OTG_REVISION		0x400
+
+#define OTG_SYSCONFIG		0x404
 #	define	MIDLEMODE	12	/* bit position */
 #	define	FORCESTDBY		(0 << MIDLEMODE)
 #	define	NOSTDBY			(1 << MIDLEMODE)
 #	define	SMARTSTDBY		(2 << MIDLEMODE)
+
 #	define	SIDLEMODE		3	/* bit position */
 #	define	FORCEIDLE		(0 << SIDLEMODE)
 #	define	NOIDLE			(1 << SIDLEMODE)
 #	define	SMARTIDLE		(2 << SIDLEMODE)
+
 #	define	ENABLEWAKEUP		(1 << 2)
 #	define	SOFTRST			(1 << 1)
 #	define	AUTOIDLE		(1 << 0)
-#define OTG_SYSSTATUS		OMAP_HSOTG(0x8)
+
+#define OTG_SYSSTATUS		0x408
 #	define	RESETDONE		(1 << 0)
-#define OTG_INTERFSEL		OMAP_HSOTG(0xc)
+
+#define OTG_INTERFSEL		0x40c
 #	define	EXTCP			(1 << 2)
-#	define	PHYSEL		0	/* bit position */
+#	define	PHYSEL			0	/* bit position */
 #	define	UTMI_8BIT		(0 << PHYSEL)
 #	define	ULPI_12PIN		(1 << PHYSEL)
 #	define	ULPI_8PIN		(2 << PHYSEL)
-#define OTG_SIMENABLE		OMAP_HSOTG(0x10)
-#	define	TM1			(1 << 0)
-#define OTG_FORCESTDBY		OMAP_HSOTG(0x14)
-#	define	ENABLEFORCE		(1 << 0)
 
-#endif	/* CONFIG_ARCH_OMAP2430 */
+#define OTG_SIMENABLE		0x410
+#	define	TM1			(1 << 0)
+
+#define OTG_FORCESTDBY		0x414
+#	define	ENABLEFORCE		(1 << 0)
 
 #endif	/* __MUSB_OMAP243X_H__ */

drivers/usb/musb/tusb6010.c

···
 	}
 	musb->sync = mem->start;
 
-	sync = ioremap(mem->start, mem->end - mem->start + 1);
+	sync = ioremap(mem->start, resource_size(mem));
 	if (!sync) {
 		pr_debug("ioremap for sync failed\n");
 		ret = -ENOMEM;

drivers/usb/musb/tusb6010_omap.c

···
 		}
 	}
 
-	if (!tusb_dma->multichannel && tusb_dma && tusb_dma->ch >= 0)
+	if (tusb_dma && !tusb_dma->multichannel && tusb_dma->ch >= 0)
 		omap_free_dma(tusb_dma->ch);
 
 	kfree(tusb_dma);

drivers/usb/otg/twl4030-usb.c

···
 #include <linux/i2c/twl.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
-
+#include <linux/notifier.h>
 
 /* Register defines */
 
···
 #define PMBR1				0x0D
 #define GPIO_USB_4PIN_ULPI_2430C	(3 << 0)
 
-
-
-enum linkstat {
-	USB_LINK_UNKNOWN = 0,
-	USB_LINK_NONE,
-	USB_LINK_VBUS,
-	USB_LINK_ID,
-};
-
 struct twl4030_usb {
 	struct otg_transceiver	otg;
 	struct device		*dev;
···
 
 /*-------------------------------------------------------------------------*/
 
-static enum linkstat twl4030_usb_linkstat(struct twl4030_usb *twl)
+static enum usb_xceiv_events twl4030_usb_linkstat(struct twl4030_usb *twl)
 {
 	int	status;
-	int	linkstat = USB_LINK_UNKNOWN;
+	int	linkstat = USB_EVENT_NONE;
 
 	/*
 	 * For ID/VBUS sensing, see manual section 15.4.8 ...
···
 		dev_err(twl->dev, "USB link status err %d\n", status);
 	else if (status & (BIT(7) | BIT(2))) {
 		if (status & BIT(2))
-			linkstat = USB_LINK_ID;
+			linkstat = USB_EVENT_ID;
 		else
-			linkstat = USB_LINK_VBUS;
+			linkstat = USB_EVENT_VBUS;
 	} else
-		linkstat = USB_LINK_NONE;
+		linkstat = USB_EVENT_NONE;
 
 	dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n",
 			status, status, linkstat);
···
 
 	spin_lock_irq(&twl->lock);
 	twl->linkstat = linkstat;
-	if (linkstat == USB_LINK_ID) {
+	if (linkstat == USB_EVENT_ID) {
 		twl->otg.default_a = true;
 		twl->otg.state = OTG_STATE_A_IDLE;
 	} else {
···
 
 	spin_lock_irqsave(&twl->lock, flags);
 	ret = sprintf(buf, "%s\n",
-			(twl->linkstat == USB_LINK_VBUS) ? "on" : "off");
+			(twl->linkstat == USB_EVENT_VBUS) ? "on" : "off");
 	spin_unlock_irqrestore(&twl->lock, flags);
 
 	return ret;
···
 	struct twl4030_usb *twl = _twl;
 	int status;
 
-#ifdef CONFIG_LOCKDEP
-	/* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
-	 * we don't want and can't tolerate.  Although it might be
-	 * friendlier not to borrow this thread context...
-	 */
-	local_irq_enable();
-#endif
-
 	status = twl4030_usb_linkstat(twl);
-	if (status != USB_LINK_UNKNOWN) {
-
+	if (status >= 0) {
 		/* FIXME add a set_power() method so that B-devices can
 		 * configure the charger appropriately.  It's not always
 		 * correct to consume VBUS power, and how much current to
···
 		 * USB_LINK_VBUS state.  musb_hdrc won't care until it
 		 * starts to handle softconnect right.
 		 */
-		if (status == USB_LINK_NONE)
+		if (status == USB_EVENT_NONE)
 			twl4030_phy_suspend(twl, 0);
 		else
 			twl4030_phy_resume(twl);
 
-		twl4030charger_usb_en(status == USB_LINK_VBUS);
+		blocking_notifier_call_chain(&twl->otg.notifier, status,
+				twl->otg.gadget);
 	}
 	sysfs_notify(&twl->dev->kobj, NULL, "vbus");
 
···
 	if (device_create_file(&pdev->dev, &dev_attr_vbus))
 		dev_warn(&pdev->dev, "could not create sysfs file\n");
 
+	BLOCKING_INIT_NOTIFIER_HEAD(&twl->otg.notifier);
+
 	/* Our job is to use irqs and status from the power module
 	 * to keep the transceiver disabled when nothing's connected.
 	 *
···
 	 * need both handles, otherwise just one suffices.
 	 */
 	twl->irq_enabled = true;
-	status = request_irq(twl->irq, twl4030_usb_irq,
+	status = request_threaded_irq(twl->irq, NULL, twl4030_usb_irq,
 			IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
 			"twl4030_usb", twl);
 	if (status < 0) {

drivers/usb/serial/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called oti6858.
 
+config USB_SERIAL_QCAUX
+	tristate "USB Qualcomm Auxiliary Serial Port Driver"
+	---help---
+	  Say Y here if you want to use the auxiliary serial ports provided
+	  by many modems based on Qualcomm chipsets.  These ports often use
+	  a proprietary protocol called DM and cannot be used for AT- or
+	  PPP-based communication.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called moto_modem.  If unsure, choose N.
+
 config USB_SERIAL_QUALCOMM
 	tristate "USB Qualcomm Serial modem"
 	help
···
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called opticon.
+
+config USB_SERIAL_VIVOPAY_SERIAL
+        tristate "USB ViVOpay serial interface driver"
+        help
+          Say Y here if you want to use a ViVOtech ViVOpay USB device.
+
+          To compile this driver as a module, choose M here: the
+          module will be called vivopay-serial.
 
 config USB_SERIAL_DEBUG
 	tristate "USB Debugging Device"

drivers/usb/serial/Makefile

···
 obj-$(CONFIG_USB_SERIAL_OPTION)			+= option.o
 obj-$(CONFIG_USB_SERIAL_OTI6858)		+= oti6858.o
 obj-$(CONFIG_USB_SERIAL_PL2303)			+= pl2303.o
+obj-$(CONFIG_USB_SERIAL_QCAUX)			+= qcaux.o
 obj-$(CONFIG_USB_SERIAL_QUALCOMM)		+= qcserial.o
 obj-$(CONFIG_USB_SERIAL_SAFE)			+= safe_serial.o
 obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI)		+= siemens_mpi.o
···
 obj-$(CONFIG_USB_SERIAL_VISOR)			+= visor.o
 obj-$(CONFIG_USB_SERIAL_WHITEHEAT)		+= whiteheat.o
 obj-$(CONFIG_USB_SERIAL_XIRCOM)			+= keyspan_pda.o
+obj-$(CONFIG_USB_SERIAL_VIVOPAY_SERIAL)	+= vivopay-serial.o
 

drivers/usb/serial/aircable.c

···
 #define DRIVER_DESC "AIRcable USB Driver"
 
 /* ID table that will be registered with USB core */
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(AIRCABLE_VID, AIRCABLE_USB_PID) },
 	{ },
 };
···
 
 	if (status) {
 		dbg("%s - urb status = %d", __func__, status);
-		if (!port->port.count) {
-			dbg("%s - port is closed, exiting.", __func__);
-			return;
-		}
 		if (status == -EPROTO) {
 			dbg("%s - caught -EPROTO, resubmitting the urb",
 			    __func__);
···
 	}
 	tty_kref_put(tty);
 
-	/* Schedule the next read _if_ we are still open */
-	if (port->port.count) {
-		usb_fill_bulk_urb(port->read_urb, port->serial->dev,
-				  usb_rcvbulkpipe(port->serial->dev,
-					  port->bulk_in_endpointAddress),
-				  port->read_urb->transfer_buffer,
-				  port->read_urb->transfer_buffer_length,
-				  aircable_read_bulk_callback, port);
+	/* Schedule the next read */
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+				  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer,
+			  port->read_urb->transfer_buffer_length,
+			  aircable_read_bulk_callback, port);
 
-		result = usb_submit_urb(urb, GFP_ATOMIC);
-		if (result)
-			dev_err(&urb->dev->dev,
-				"%s - failed resubmitting read urb, error %d\n",
-				__func__, result);
-	}
-
-	return;
+	result = usb_submit_urb(urb, GFP_ATOMIC);
+	if (result && result != -EPERM)
+		dev_err(&urb->dev->dev,
+			"%s - failed resubmitting read urb, error %d\n",
+			__func__, result);
 }
 
 /* Based on ftdi_sio.c throttle */

drivers/usb/serial/ark3116.c

···
 /* usb timeout of 1 second */
 #define ARK_TIMEOUT (1*HZ)
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x6547, 0x0232) },
 	{ USB_DEVICE(0x18ec, 0x3118) },		/* USB to IrDA adapter */
 	{ },
···
 
 		tty = tty_port_tty_get(&port->port);
 		if (tty) {
-			tty_buffer_request_room(tty, urb->actual_length + 1);
 			/* overrun is special, not associated with a char */
 			if (unlikely(lsr & UART_LSR_OE))
 				tty_insert_flip_char(tty, 0, TTY_OVERRUN);

drivers/usb/serial/belkin_sa.c

···
 					unsigned int set, unsigned int clear);
 
 
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(BELKIN_SA_VID, BELKIN_SA_PID) },
 	{ USB_DEVICE(BELKIN_OLD_VID, BELKIN_OLD_PID) },
 	{ USB_DEVICE(PERACOM_VID, PERACOM_PID) },

drivers/usb/serial/ch341.c

···
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
 #include <linux/serial.h>
+#include <asm/unaligned.h>
 
 #define DEFAULT_BAUD_RATE 9600
 #define DEFAULT_TIMEOUT   1000
···
 
 static int debug;
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x4348, 0x5523) },
 	{ USB_DEVICE(0x1a86, 0x7523) },
 	{ },
···
 	struct usb_serial_port *port = tty->driver_data;
 	int r;
 	uint16_t reg_contents;
-	uint8_t break_reg[2];
+	uint8_t *break_reg;
 
 	dbg("%s()", __func__);
 
-	r = ch341_control_in(port->serial->dev, CH341_REQ_READ_REG,
-			ch341_break_reg, 0, break_reg, sizeof(break_reg));
-	if (r < 0) {
-		printk(KERN_WARNING "%s: USB control read error whilst getting"
-				" break register contents.\n", __FILE__);
+	break_reg = kmalloc(2, GFP_KERNEL);
+	if (!break_reg) {
+		dev_err(&port->dev, "%s - kmalloc failed\n", __func__);
 		return;
+	}
+
+	r = ch341_control_in(port->serial->dev, CH341_REQ_READ_REG,
+			ch341_break_reg, 0, break_reg, 2);
+	if (r < 0) {
+		dev_err(&port->dev, "%s - USB control read error (%d)\n",
+				__func__, r);
+		goto out;
 	}
 	dbg("%s - initial ch341 break register contents - reg1: %x, reg2: %x",
 			__func__, break_reg[0], break_reg[1]);
···
 	}
 	dbg("%s - New ch341 break register contents - reg1: %x, reg2: %x",
 			__func__, break_reg[0], break_reg[1]);
-	reg_contents = (uint16_t)break_reg[0] | ((uint16_t)break_reg[1] << 8);
+	reg_contents = get_unaligned_le16(break_reg);
 	r = ch341_control_out(port->serial->dev, CH341_REQ_WRITE_REG,
 			ch341_break_reg, reg_contents);
 	if (r < 0)
-		printk(KERN_WARNING "%s: USB control write error whilst setting"
-				" break register contents.\n", __FILE__);
+		dev_err(&port->dev, "%s - USB control write error (%d)\n",
+				__func__, r);
+out:
+	kfree(break_reg);
 }
 
 static int ch341_tiocmset(struct tty_struct *tty, struct file *file,

drivers/usb/serial/cp210x.c

···
 
 static int debug;
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */
 	{ USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
 	{ USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */
···
 	{ USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
 	{ USB_DEVICE(0x10C4, 0x81E2) }, /* Lipowsky Industrie Elektronik GmbH, Baby-LIN */
 	{ USB_DEVICE(0x10C4, 0x81E7) }, /* Aerocomm Radio */
+	{ USB_DEVICE(0x10C4, 0x81E8) }, /* Zephyr Bioharness */
 	{ USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */
 	{ USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */
 	{ USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */
 	{ USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */
-	{ USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */
+	{ USB_DEVICE(0x10C4, 0x8293) }, /* Telegesys ETRX2USB */
 	{ USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */
 	{ USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
 	{ USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */
···
 				baud);
 		if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV,
 					((BAUD_RATE_GEN_FREQ + baud/2) / baud))) {
-			dbg("Baud rate requested not supported by device\n");
+			dbg("Baud rate requested not supported by device");
 			baud = tty_termios_baud_rate(old_termios);
 		}
 	}

drivers/usb/serial/cyberjack.c

···
 static void cyberjack_read_bulk_callback(struct urb *urb);
 static void cyberjack_write_bulk_callback(struct urb *urb);
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) },
 	{ }			/* Terminating entry */
 };
···
 
 	tty = tty_port_tty_get(&port->port);
 	if (!tty) {
-		dbg("%s - ignoring since device not open\n", __func__);
+		dbg("%s - ignoring since device not open", __func__);
 		return;
 	}
 	if (urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 	}

drivers/usb/serial/cypress_m8.c

···
 #include <linux/serial.h>
 #include <linux/delay.h>
 #include <linux/uaccess.h>
+#include <asm/unaligned.h>
 
 #include "cypress_m8.h"
 
 
-#ifdef CONFIG_USB_SERIAL_DEBUG
-	static int debug = 1;
-#else
-	static int debug;
-#endif
+static int debug;
 static int stats;
 static int interval;
+static int unstable_bauds;
 
 /*
  * Version Information
···
 #define CYPRESS_BUF_SIZE	1024
 #define CYPRESS_CLOSING_WAIT	(30*HZ)
 
-static struct usb_device_id id_table_earthmate [] = {
+static const struct usb_device_id id_table_earthmate[] = {
 	{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) },
 	{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_cyphidcomrs232 [] = {
+static const struct usb_device_id id_table_cyphidcomrs232[] = {
 	{ USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) },
 	{ USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_nokiaca42v2 [] = {
+static const struct usb_device_id id_table_nokiaca42v2[] = {
 	{ USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) },
 	{ USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) },
 	{ USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) },
···
 	struct cypress_private *priv;
 	priv = usb_get_serial_port_data(port);
 
+	if (unstable_bauds)
+		return new_rate;
+
 	/*
 	 * The general purpose firmware for the Cypress M8 allows for
 	 * a maximum speed of 57600bps (I have no idea whether DeLorme
···
 {
 	int new_baudrate = 0, retval = 0, tries = 0;
 	struct cypress_private *priv;
-	__u8 feature_buffer[5];
+	u8 *feature_buffer;
+	const unsigned int feature_len = 5;
 	unsigned long flags;
 
 	dbg("%s", __func__);
···
 	if (!priv->comm_is_ok)
 		return -ENODEV;
 
+	feature_buffer = kcalloc(feature_len, sizeof(u8), GFP_KERNEL);
+	if (!feature_buffer)
+		return -ENOMEM;
+
 	switch (cypress_request_type) {
 	case CYPRESS_SET_CONFIG:
-		new_baudrate = priv->baud_rate;
 		/* 0 means 'Hang up' so doesn't change the true bit rate */
-		if (baud_rate == 0)
-			new_baudrate = priv->baud_rate;
-		/* Change of speed ? */
-		else if (baud_rate != priv->baud_rate) {
+		new_baudrate = priv->baud_rate;
+		if (baud_rate && baud_rate != priv->baud_rate) {
 			dbg("%s - baud rate is changing", __func__);
 			retval = analyze_baud_rate(port, baud_rate);
-			if (retval >=  0) {
+			if (retval >= 0) {
 				new_baudrate = retval;
 				dbg("%s - New baud rate set to %d",
 				    __func__, new_baudrate);
···
 		dbg("%s - baud rate is being sent as %d",
 					__func__, new_baudrate);
 
-		memset(feature_buffer, 0, sizeof(feature_buffer));
 		/* fill the feature_buffer with new configuration */
-		*((u_int32_t *)feature_buffer) = new_baudrate;
+		put_unaligned_le32(new_baudrate, feature_buffer);
 		feature_buffer[4] |= data_bits;   /* assign data bits in 2 bit space ( max 3 ) */
 		/* 1 bit gap */
 		feature_buffer[4] |= (stop_bits << 3);   /* assign stop bits in 1 bit space */
···
 					HID_REQ_SET_REPORT,
 					USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS,
 					0x0300, 0, feature_buffer,
-					sizeof(feature_buffer), 500);
+					feature_len, 500);
 
 			if (tries++ >= 3)
 				break;
 
-		} while (retval != sizeof(feature_buffer) &&
+		} while (retval != feature_len &&
 			 retval != -ENODEV);
 
-		if (retval != sizeof(feature_buffer)) {
+		if (retval != feature_len) {
 			dev_err(&port->dev, "%s - failed sending serial "
 				"line settings - %d\n", __func__, retval);
 			cypress_set_dead(port);
···
 			/* Not implemented for this device,
 			   and if we try to do it we're likely
 			   to crash the hardware. */
-			return -ENOTTY;
+			retval = -ENOTTY;
+			goto out;
 		}
 		dbg("%s - retreiving serial line settings", __func__);
-		/* set initial values in feature buffer */
-		memset(feature_buffer, 0, sizeof(feature_buffer));
-
 		do {
 			retval = usb_control_msg(port->serial->dev,
 					usb_rcvctrlpipe(port->serial->dev, 0),
 					HID_REQ_GET_REPORT,
 					USB_DIR_IN | USB_RECIP_INTERFACE | USB_TYPE_CLASS,
 					0x0300, 0, feature_buffer,
-					sizeof(feature_buffer), 500);
+					feature_len, 500);
 
 			if (tries++ >= 3)
 				break;
-		} while (retval != sizeof(feature_buffer)
+		} while (retval != feature_len
 						&& retval != -ENODEV);
 
-		if (retval != sizeof(feature_buffer)) {
+		if (retval != feature_len) {
 			dev_err(&port->dev, "%s - failed to retrieve serial "
 				"line settings - %d\n", __func__, retval);
 			cypress_set_dead(port);
-			return retval;
+			goto out;
 		} else {
 			spin_lock_irqsave(&priv->lock, flags);
 			/* store the config in one byte, and later
 			   use bit masks to check values */
 			priv->current_config = feature_buffer[4];
-			priv->baud_rate = *((u_int32_t *)feature_buffer);
+			priv->baud_rate = get_unaligned_le32(feature_buffer);
 			spin_unlock_irqrestore(&priv->lock, flags);
 		}
 	}
 	spin_lock_irqsave(&priv->lock, flags);
 	++priv->cmd_count;
 	spin_unlock_irqrestore(&priv->lock, flags);
-
+out:
+	kfree(feature_buffer);
 	return retval;
 } /* cypress_serial_control */
 
···
 {
 	struct cypress_private *priv = usb_get_serial_port_data(port);
 	/* drop dtr and rts */
-	priv = usb_get_serial_port_data(port);
 	spin_lock_irq(&priv->lock);
 	if (on == 0)
 		priv->line_control = 0;
···
 		spin_unlock_irqrestore(&priv->lock, flags);
 
 	/* process read if there is data other than line status */
-	if (tty && (bytes > i)) {
-		bytes = tty_buffer_request_room(tty, bytes);
-		for (; i < bytes ; ++i) {
-			dbg("pushing byte number %d - %d - %c", i, data[i],
-					data[i]);
-			tty_insert_flip_char(tty, data[i], tty_flag);
-		}
+	if (tty && bytes > i) {
+		tty_insert_flip_string_fixed_flag(tty, data + i,
+				bytes - i, tty_flag);
 		tty_flip_buffer_push(tty);
 	}
 
···
 continue_read:
 	tty_kref_put(tty);
 
-	/* Continue trying to always read... unless the port has closed. */
+	/* Continue trying to always read */
 
-	if (port->port.count > 0 && priv->comm_is_ok) {
+	if (priv->comm_is_ok) {
 		usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev,
 				usb_rcvintpipe(port->serial->dev,
 					port->interrupt_in_endpointAddress),
···
 				cypress_read_int_callback, port,
 				priv->read_urb_interval);
 		result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
-		if (result) {
+		if (result && result != -EPERM) {
 			dev_err(&urb->dev->dev, "%s - failed resubmitting "
 					"read urb, error %d\n", __func__,
 					result);
···
 MODULE_PARM_DESC(stats, "Enable statistics or not");
 module_param(interval, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(interval, "Overrides interrupt interval");
+module_param(unstable_bauds, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(unstable_bauds, "Allow unstable baud rates");

drivers/usb/serial/digi_acceleport.c

···
 
 static int debug;
 
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(DIGI_VENDOR_ID, DIGI_2_ID) },
 	{ USB_DEVICE(DIGI_VENDOR_ID, DIGI_4_ID) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_2 [] = {
+static const struct usb_device_id id_table_2[] = {
 	{ USB_DEVICE(DIGI_VENDOR_ID, DIGI_2_ID) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_4 [] = {
+static const struct usb_device_id id_table_4[] = {
 	{ USB_DEVICE(DIGI_VENDOR_ID, DIGI_4_ID) },
 	{ }						/* Terminating entry */
 };
···
 		return;
 	}
 
-	/* try to send any buffered data on this port, if it is open */
+	/* try to send any buffered data on this port */
 	spin_lock(&priv->dp_port_lock);
 	priv->dp_write_urb_in_use = 0;
-	if (port->port.count && priv->dp_out_buf_len > 0) {
+	if (priv->dp_out_buf_len > 0) {
 		*((unsigned char *)(port->write_urb->transfer_buffer))
 			= (unsigned char)DIGI_CMD_SEND_DATA;
 		*((unsigned char *)(port->write_urb->transfer_buffer) + 1)
···
 	schedule_work(&priv->dp_wakeup_work);
 
 	spin_unlock(&priv->dp_port_lock);
-	if (ret)
+	if (ret && ret != -EPERM)
 		dev_err(&port->dev,
 			"%s: usb_submit_urb failed, ret=%d, port=%d\n",
 			__func__, ret, priv->dp_port_num);
···
 	struct digi_port *priv = usb_get_serial_port_data(port);
 	struct ktermios not_termios;
 
-	dbg("digi_open: TOP: port=%d, open_count=%d",
-		priv->dp_port_num, port->port.count);
+	dbg("digi_open: TOP: port=%d", priv->dp_port_num);
 
 	/* be sure the device is started up */
 	if (digi_startup_device(port->serial) != 0)
···
 	unsigned char buf[32];
 	struct digi_port *priv = usb_get_serial_port_data(port);
 
-	dbg("digi_close: TOP: port=%d, open_count=%d",
-		priv->dp_port_num, port->port.count);
+	dbg("digi_close: TOP: port=%d", priv->dp_port_num);
 
 	mutex_lock(&port->serial->disc_mutex);
 	/* if disconnected, just clear flags */
···
 	/* continue read */
 	urb->dev = port->serial->dev;
 	ret = usb_submit_urb(urb, GFP_ATOMIC);
-	if (ret != 0) {
+	if (ret != 0 && ret != -EPERM) {
 		dev_err(&port->dev,
 			"%s: failed resubmitting urb, ret=%d, port=%d\n",
 			__func__, ret, priv->dp_port_num);
···
 	int port_status = ((unsigned char *)urb->transfer_buffer)[2];
 	unsigned char *data = ((unsigned char *)urb->transfer_buffer) + 3;
 	int flag, throttled;
-	int i;
 	int status = urb->status;
 
 	/* do not process callbacks on closed ports */
 	/* but do continue the read chain */
-	if (port->port.count == 0)
+	if (urb->status == -ENOENT)
 		return 0;
 
 	/* short/multiple packet check */
···
 
 		/* data length is len-1 (one byte of len is port_status) */
 		--len;
-
-		len = tty_buffer_request_room(tty, len);
 		if (len > 0) {
-			/* Hot path */
-			if (flag == TTY_NORMAL)
-				tty_insert_flip_string(tty, data, len);
-			else {
-				for (i = 0; i < len; i++)
-					tty_insert_flip_char(tty,
-								data[i], flag);
-			}
+			tty_insert_flip_string_fixed_flag(tty, data, len,
+									flag);
 			tty_flip_buffer_push(tty);
 		}
 	}
···
 
 		tty = tty_port_tty_get(&port->port);
 		rts = 0;
-		if (port->port.count)
-			rts = tty->termios->c_cflag & CRTSCTS;
+		rts = tty->termios->c_cflag & CRTSCTS;
 		
 		if (opcode == DIGI_CMD_READ_INPUT_SIGNALS) {
 			spin_lock(&priv->dp_port_lock);

drivers/usb/serial/empeg.c

···
 static void empeg_write_bulk_callback(struct urb *urb);
 static void empeg_read_bulk_callback(struct urb *urb);
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
 	{ }					/* Terminating entry */
 };
···
 	tty = tty_port_tty_get(&port->port);
 
 	if (urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 		bytes_in += urb->actual_length;

drivers/usb/serial/ftdi_sio.c

···
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
+#include <linux/mutex.h>
 #include <linux/uaccess.h>
 #include <linux/usb.h>
 #include <linux/serial.h>
···
 
 	unsigned int latency;		/* latency setting in use */
 	spinlock_t tx_lock;	/* spinlock for transmit state */
-	unsigned long tx_bytes;
 	unsigned long tx_outstanding_bytes;
 	unsigned long tx_outstanding_urbs;
 	unsigned short max_packet_size;
+	struct mutex cfg_lock; /* Avoid mess by parallel calls of config ioctl() */
 };
 
 /* struct ftdi_sio_quirk is used by devices requiring special attention. */
···
 	{ USB_DEVICE(FTDI_VID, FTDI_OCEANIC_PID) },
 	{ USB_DEVICE(TTI_VID, TTI_QL355P_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
+	{ USB_DEVICE(CONTEC_VID, CONTEC_COM1USBH_PID) },
 	{ USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
 	{ USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
 	{ USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
···
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(FTDI_VID, HAMEG_HO820_PID) },
 	{ USB_DEVICE(FTDI_VID, HAMEG_HO870_PID) },
+	{ USB_DEVICE(FTDI_VID, MJSG_GENERIC_PID) },
+	{ USB_DEVICE(FTDI_VID, MJSG_SR_RADIO_PID) },
+	{ USB_DEVICE(FTDI_VID, MJSG_HD_RADIO_PID) },
+	{ USB_DEVICE(FTDI_VID, MJSG_XM_RADIO_PID) },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
···
 		.name =		"ftdi_sio",
 	},
 	.description =		"FTDI USB Serial Device",
-	.usb_driver = 		&ftdi_driver ,
+	.usb_driver = 		&ftdi_driver,
 	.id_table =		id_table_combined,
 	.num_ports =		1,
 	.probe =		ftdi_sio_probe,
···
 	.chars_in_buffer =	ftdi_chars_in_buffer,
 	.read_bulk_callback =	ftdi_read_bulk_callback,
 	.write_bulk_callback =	ftdi_write_bulk_callback,
-	.tiocmget =             ftdi_tiocmget,
-	.tiocmset =             ftdi_tiocmset,
+	.tiocmget =		ftdi_tiocmget,
+	.tiocmset =		ftdi_tiocmset,
 	.ioctl =		ftdi_ioctl,
 	.set_termios =		ftdi_set_termios,
 	.break_ctl =		ftdi_break_ctl,
···
 							unsigned int clear)
 {
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	char *buf;
 	unsigned urb_value;
 	int rv;
 
···
 		dbg("%s - DTR|RTS not being set|cleared", __func__);
 		return 0;	/* no change */
 	}
-
-	buf = kmalloc(1, GFP_NOIO);
-	if (!buf)
-		return -ENOMEM;
 
 	clear &= ~set;	/* 'set' takes precedence over 'clear' */
 	urb_value = 0;
···
 			       FTDI_SIO_SET_MODEM_CTRL_REQUEST,
 			       FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
 			       urb_value, priv->interface,
-			       buf, 0, WDR_TIMEOUT);
-
-	kfree(buf);
+			       NULL, 0, WDR_TIMEOUT);
 	if (rv < 0) {
 		dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
 				__func__,
···
 static int change_speed(struct tty_struct *tty, struct usb_serial_port *port)
 {
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	char *buf;
 	__u16 urb_value;
 	__u16 urb_index;
 	__u32 urb_index_value;
 	int rv;
-
-	buf = kmalloc(1, GFP_NOIO);
-	if (!buf)
-		return -ENOMEM;
 
 	urb_index_value = get_ftdi_divisor(tty, port);
 	urb_value = (__u16)urb_index_value;
···
 			    FTDI_SIO_SET_BAUDRATE_REQUEST,
 			    FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
 			    urb_value, urb_index,
-			    buf, 0, WDR_SHORT_TIMEOUT);
-
-	kfree(buf);
+			    NULL, 0, WDR_SHORT_TIMEOUT);
 	return rv;
 }
 
···
 {
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
 	struct usb_device *udev = port->serial->dev;
-	char buf[1];
-	int rv = 0;
+	int rv;
 	int l = priv->latency;
 
 	if (priv->flags & ASYNC_LOW_LATENCY)
···
 			     FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
 			     FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
 			     l, priv->interface,
-			     buf, 0, WDR_TIMEOUT);
-
+			     NULL, 0, WDR_TIMEOUT);
 	if (rv < 0)
 		dev_err(&port->dev, "Unable to write latency timer: %i\n", rv);
 	return rv;
···
 {
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
 	struct usb_device *udev = port->serial->dev;
-	unsigned short latency = 0;
-	int rv = 0;
-
+	unsigned char *buf;
+	int rv;
 
 	dbg("%s", __func__);
+
+	buf = kmalloc(1, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
 
 	rv = usb_control_msg(udev,
 			     usb_rcvctrlpipe(udev, 0),
 			     FTDI_SIO_GET_LATENCY_TIMER_REQUEST,
 			     FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE,
 			     0, priv->interface,
-			     (char *) &latency, 1, WDR_TIMEOUT);
-
-	if (rv < 0) {
+			     buf, 1, WDR_TIMEOUT);
+	if (rv < 0)
 		dev_err(&port->dev, "Unable to read latency timer: %i\n", rv);
-		return -EIO;
-	}
-	return latency;
+	else
+		priv->latency = buf[0];
+
+	kfree(buf);
+
+	return rv;
 }
 
 static int get_serial_info(struct usb_serial_port *port,
···
 	if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
 		return -EFAULT;
 
-	lock_kernel();
+	mutex_lock(&priv->cfg_lock);
 	old_priv = *priv;
 
 	/* Do error checking and permission checking */
···
 	if (!capable(CAP_SYS_ADMIN)) {
 		if (((new_serial.flags & ~ASYNC_USR_MASK) !=
 		     (priv->flags & ~ASYNC_USR_MASK))) {
-			unlock_kernel();
+			mutex_unlock(&priv->cfg_lock);
 			return -EPERM;
 		}
 		priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
···
 
 	if ((new_serial.baud_base != priv->baud_base) &&
 	    (new_serial.baud_base < 9600)) {
-	    	unlock_kernel();
+		mutex_unlock(&priv->cfg_lock);
 		return -EINVAL;
 	}
 
···
 	     (priv->flags & ASYNC_SPD_MASK)) ||
 	    (((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
 	     (old_priv.custom_divisor != priv->custom_divisor))) {
-		unlock_kernel();
+		mutex_unlock(&priv->cfg_lock);
 		change_speed(tty, port);
 	}
 	else
-		unlock_kernel();
+		mutex_unlock(&priv->cfg_lock);
 	return 0;
 
 } /* set_serial_info */
···
 					__func__);
 		}
 	} else if (version < 0x200) {
-		/* Old device.  Assume its the original SIO. */
+		/* Old device.  Assume it's the original SIO. */
 		priv->chip_type = SIO;
 		priv->baud_base = 12000000 / 16;
 		priv->write_offset = 1;
 	} else if (version < 0x400) {
-		/* Assume its an FT8U232AM (or FT8U245AM) */
+		/* Assume it's an FT8U232AM (or FT8U245AM) */
 		/* (It might be a BM because of the iSerialNumber bug,
 		 * but it will still work as an AM device.) */
 		priv->chip_type = FT8U232AM;
 	} else if (version < 0x600) {
-		/* Assume its an FT232BM (or FT245BM) */
+		/* Assume it's an FT232BM (or FT245BM) */
 		priv->chip_type = FT232BM;
 	} else {
-		/* Assume its an FT232R  */
+		/* Assume it's an FT232R */
 		priv->chip_type = FT232RL;
 	}
 	dev_info(&udev->dev, "Detected %s\n", ftdi_chip_name[priv->chip_type]);
···
 	struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc;
 
 	unsigned num_endpoints;
-	int i = 0;
+	int i;
 
 	num_endpoints = interface->cur_altsetting->desc.bNumEndpoints;
 	dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints);
···
 	struct usb_serial_port *port = to_usb_serial_port(dev);
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
 	int v = simple_strtoul(valbuf, NULL, 10);
-	int rv = 0;
+	int rv;
 
 	priv->latency = v;
 	rv = write_latency_timer(port);
···
 	struct usb_serial_port *port = to_usb_serial_port(dev);
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
 	struct usb_device *udev = port->serial->dev;
-	char buf[1];
 	int v = simple_strtoul(valbuf, NULL, 10);
-	int rv = 0;
+	int rv;
 
 	dbg("%s: setting event char = %i", __func__, v);
 
···
 			     FTDI_SIO_SET_EVENT_CHAR_REQUEST,
 			     FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE,
 			     v, priv->interface,
-			     buf, 0, WDR_TIMEOUT);
-
+			     NULL, 0, WDR_TIMEOUT);
 	if (rv < 0) {
 		dbg("Unable to write event character: %i", rv);
 		return -EIO;
···
 
 	kref_init(&priv->kref);
 	spin_lock_init(&priv->tx_lock);
+	mutex_init(&priv->cfg_lock);
 	init_waitqueue_head(&priv->delta_msr_wait);
-	/* This will push the characters through immediately rather
-	   than queue a task to deliver them */
+
 	priv->flags = ASYNC_LOW_LATENCY;
 
 	if (quirk && quirk->port_probe)
···
 
 	ftdi_determine_type(port);
 	ftdi_set_max_packet_size(port);
-	read_latency_timer(port);
+	if (read_latency_timer(port) < 0)
+		priv->latency = 16;
 	create_sysfs_attrs(port);
 	return 0;
 }
···
 {
 	struct usb_device *udev = serial->dev;
 	int latency = ndi_latency_timer;
-	int rv = 0;
-	char buf[1];
 
 	if (latency == 0)
 		latency = 1;
···
 	dbg("%s setting NDI device latency to %d", __func__, latency);
 	dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
 
-	rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+	/* FIXME: errors are not returned */
+	usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
 				FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
 				FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
-				latency, 0, buf, 0, WDR_TIMEOUT);
+				latency, 0, NULL, 0, WDR_TIMEOUT);
 	return 0;
 }
 
···
 			   urb->transfer_buffer_length,
 			   ftdi_read_bulk_callback, port);
 	result = usb_submit_urb(urb, mem_flags);
-	if (result)
+	if (result && result != -EPERM)
 		dev_err(&port->dev,
 			"%s - failed submitting read urb, error %d\n",
 							__func__, result);
···
 	struct usb_device *dev = port->serial->dev;
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
 	unsigned long flags;
-
-	int result = 0;
-	char buf[1]; /* Needed for the usb_control_msg I think */
+	int result;
 
 	dbg("%s", __func__);
-
-	spin_lock_irqsave(&priv->tx_lock, flags);
-	priv->tx_bytes = 0;
-	spin_unlock_irqrestore(&priv->tx_lock, flags);
 
 	write_latency_timer(port);
 
···
 	usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 			FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
 			FTDI_SIO_RESET_SIO,
-			priv->interface, buf, 0, WDR_TIMEOUT);
+			priv->interface, NULL, 0, WDR_TIMEOUT);
 
 	/* Termios defaults are set by usb_serial_init. We don't change
 	   port->tty->termios - this would lose speed settings, etc.
···
 static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
 {
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	char buf[1];
 
 	mutex_lock(&port->serial->disc_mutex);
 	if (!port->serial->disconnected) {
···
 			    usb_sndctrlpipe(port->serial->dev, 0),
 			    FTDI_SIO_SET_FLOW_CTRL_REQUEST,
 			    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
-			    0, priv->interface, buf, 0,
+			    0, priv->interface, NULL, 0,
 			    WDR_TIMEOUT) < 0) {
 			    dev_err(&port->dev, "error from flowcontrol urb\n");
 		}
···
 	spin_lock_irqsave(&priv->tx_lock, flags);
 	if (priv->tx_outstanding_urbs > URB_UPPER_LIMIT) {
 		spin_unlock_irqrestore(&priv->tx_lock, flags);
-		dbg("%s - write limit hit\n", __func__);
+		dbg("%s - write limit hit", __func__);
 		return 0;
 	}
 	priv->tx_outstanding_urbs++;
···
 	} else {
 		spin_lock_irqsave(&priv->tx_lock, flags);
 		priv->tx_outstanding_bytes += count;
-		priv->tx_bytes += count;
 		spin_unlock_irqrestore(&priv->tx_lock, flags);
 	}
 
···
 {
 	struct usb_serial_port *port = tty->driver_data;
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	__u16 urb_value = 0;
-	char buf[1];
+	__u16 urb_value;
 
 	/* break_state = -1 to turn on break, and 0 to turn off break */
 	/* see drivers/char/tty_io.c to see it used */
···
 			FTDI_SIO_SET_DATA_REQUEST,
 			FTDI_SIO_SET_DATA_REQUEST_TYPE,
 			urb_value , priv->interface,
-			buf, 0, WDR_TIMEOUT) < 0) {
+			NULL, 0, WDR_TIMEOUT) < 0) {
 		dev_err(&port->dev, "%s FAILED to enable/disable break state "
 			"(state was %d)\n", __func__, break_state);
 	}
···
 	struct ktermios *termios = tty->termios;
 	unsigned int cflag = termios->c_cflag;
 	__u16 urb_value; /* will hold the new flags */
-	char buf[1]; /* Perhaps I should dynamically alloc this? */
 
 	/* Added for xon/xoff support */
 	unsigned int iflag = termios->c_iflag;
···
 	}
 	if (cflag & CSIZE) {
 		switch (cflag & CSIZE) {
-		case CS5: urb_value |= 5; dbg("Setting CS5"); break;
-		case CS6: urb_value |= 6; dbg("Setting CS6"); break;
 		case CS7: urb_value |= 7; dbg("Setting CS7"); break;
 		case CS8: urb_value |= 8; dbg("Setting CS8"); break;
 		default:
-			dev_err(&port->dev, "CSIZE was set but not CS5-CS8\n");
+			dev_err(&port->dev, "CSIZE was set but not CS7-CS8\n");
 		}
 	}
 
···
 			    FTDI_SIO_SET_DATA_REQUEST,
 			    FTDI_SIO_SET_DATA_REQUEST_TYPE,
 			    urb_value , priv->interface,
-			    buf, 0, WDR_SHORT_TIMEOUT) < 0) {
+			    NULL, 0, WDR_SHORT_TIMEOUT) < 0) {
 		dev_err(&port->dev, "%s FAILED to set "
 			"databits/stopbits/parity\n", __func__);
 	}
···
 				    FTDI_SIO_SET_FLOW_CTRL_REQUEST,
 				    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
 				    0, priv->interface,
-				    buf, 0, WDR_TIMEOUT) < 0) {
+				    NULL, 0, WDR_TIMEOUT) < 0) {
 			dev_err(&port->dev,
 				"%s error from disable flowcontrol urb\n",
 				__func__);
···
 				    FTDI_SIO_SET_FLOW_CTRL_REQUEST,
 				    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
 				    0 , (FTDI_SIO_RTS_CTS_HS | priv->interface),
-				    buf, 0, WDR_TIMEOUT) < 0) {
+				    NULL, 0, WDR_TIMEOUT) < 0) {
 			dev_err(&port->dev,
 				"urb failed to set to rts/cts flow control\n");
 		}
···
 					    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
 					    urb_value , (FTDI_SIO_XON_XOFF_HS
 							 | priv->interface),
-					    buf, 0, WDR_TIMEOUT) < 0) {
+					    NULL, 0, WDR_TIMEOUT) < 0) {
 				dev_err(&port->dev, "urb failed to set to "
 					"xon/xoff flow control\n");
 			}
···
 					    FTDI_SIO_SET_FLOW_CTRL_REQUEST,
 					    FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
 					    0, priv->interface,
-					    buf, 0, WDR_TIMEOUT) < 0) {
+					    NULL, 0, WDR_TIMEOUT) < 0) {
 				dev_err(&port->dev,
 					"urb failed to clear flow control\n");
 			}
···
 {
 	struct usb_serial_port *port = tty->driver_data;
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	unsigned char buf[2];
+	unsigned char *buf;
+	int len;
 	int ret;
 
 	dbg("%s TIOCMGET", __func__);
+
+	buf = kmalloc(2, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	/*
+	 * The 8U232AM returns a two byte value (the SIO a 1 byte value) in
+	 * the same format as the data returned from the in point.
+	 */
 	switch (priv->chip_type) {
 	case SIO:
-		/* Request the status from the device */
-		ret = usb_control_msg(port->serial->dev,
-			   usb_rcvctrlpipe(port->serial->dev, 0),
-			   FTDI_SIO_GET_MODEM_STATUS_REQUEST,
-			   FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
-			   0, 0,
-			   buf, 1, WDR_TIMEOUT);
-		if (ret < 0)
-			return ret;
+		len = 1;
 		break;
 	case FT8U232AM:
 	case FT232BM:
···
 	case FT232RL:
 	case FT2232H:
 	case FT4232H:
-		/* the 8U232AM returns a two byte value (the sio is a 1 byte
-		   value) - in the same format as the data returned from the in
-		   point */
-		ret = usb_control_msg(port->serial->dev,
-				   usb_rcvctrlpipe(port->serial->dev, 0),
-				   FTDI_SIO_GET_MODEM_STATUS_REQUEST,
-				   FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
-				   0, priv->interface,
-				   buf, 2, WDR_TIMEOUT);
-		if (ret < 0)
-			return ret;
+		len = 2;
 		break;
 	default:
-		return -EFAULT;
+		ret = -EFAULT;
+		goto out;
 	}
 
-	return  (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
+	ret = usb_control_msg(port->serial->dev,
+			usb_rcvctrlpipe(port->serial->dev, 0),
+			FTDI_SIO_GET_MODEM_STATUS_REQUEST,
+			FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
+			0, priv->interface,
+			buf, len, WDR_TIMEOUT);
+	if (ret < 0)
+		goto out;
+
+	ret = (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
 		(buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) |
 		(buf[0]  & FTDI_SIO_RI_MASK  ? TIOCM_RI  : 0) |
 		(buf[0]  & FTDI_SIO_RLSD_MASK ? TIOCM_CD  : 0) |
 		priv->last_dtr_rts;
+out:
+	kfree(buf);
+	return ret;
 }
 
 static int ftdi_tiocmset(struct tty_struct *tty, struct file *file,
···
 	port->throttled = port->throttle_req = 0;
 	spin_unlock_irqrestore(&port->lock, flags);
 
-	/* Resubmit urb if throttled and open. */
-	if (was_throttled && test_bit(ASYNCB_INITIALIZED, &port->port.flags))
+	if (was_throttled)
 		ftdi_submit_read_urb(port, GFP_KERNEL);
 }
 

drivers/usb/serial/ftdi_sio.h

···
 #define FTDI_SIO_SET_FLOW_CTRL	2 /* Set flow control register */
 #define FTDI_SIO_SET_BAUD_RATE	3 /* Set baud rate */
 #define FTDI_SIO_SET_DATA	4 /* Set the data characteristics of the port */
-#define FTDI_SIO_GET_MODEM_STATUS	5 /* Retrieve current value of modern status register */
+#define FTDI_SIO_GET_MODEM_STATUS	5 /* Retrieve current value of modem status register */
 #define FTDI_SIO_SET_EVENT_CHAR	6 /* Set the event character */
 #define FTDI_SIO_SET_ERROR_CHAR	7 /* Set the error character */
 #define FTDI_SIO_SET_LATENCY_TIMER	9 /* Set the latency timer */
 #define FTDI_SIO_GET_LATENCY_TIMER	10 /* Get the latency timer */
 
-/* Interface indicies for FT2232, FT2232H and FT4232H devices*/
+/* Interface indices for FT2232, FT2232H and FT4232H devices */
 #define INTERFACE_A		1
 #define INTERFACE_B		2
 #define INTERFACE_C		3
···
  *   BmRequestType:  0100 0000b
  *   bRequest:       FTDI_SIO_SET_FLOW_CTRL
  *   wValue:         Xoff/Xon
- *   wIndex:         Protocol/Port - hIndex is protocl / lIndex is port
+ *   wIndex:         Protocol/Port - hIndex is protocol / lIndex is port
  *   wLength:        0
  *   Data:           None
  *

drivers/usb/serial/ftdi_sio_ids.h

···
 #define FTDI_8U232AM_ALT_PID 0x6006 /* FTDI's alternate PID for above */
 #define FTDI_8U2232C_PID 0x6010 /* Dual channel device */
 #define FTDI_4232H_PID 0x6011 /* Quad channel hi-speed device */
-#define FTDI_SIO_PID	0x8372	/* Product Id SIO application of 8U100AX  */
+#define FTDI_SIO_PID	0x8372	/* Product Id SIO application of 8U100AX */
 #define FTDI_232RL_PID  0xFBFA  /* Product ID for FT232RL */
 
 
···
 #define LMI_LM3S_DEVEL_BOARD_PID	0xbcd8
 #define LMI_LM3S_EVAL_BOARD_PID		0xbcd9
 
-#define FTDI_TURTELIZER_PID	0xBDC8 /* JTAG/RS-232 adapter by egnite GmBH */
+#define FTDI_TURTELIZER_PID	0xBDC8 /* JTAG/RS-232 adapter by egnite GmbH */
 
 /* OpenDCC (www.opendcc.de) product id */
 #define FTDI_OPENDCC_PID	0xBFD8
···
 #define FTDI_ELV_TFD128_PID	0xE0EC	/* ELV Temperatur-Feuchte-Datenlogger TFD 128 */
 #define FTDI_ELV_FM3RX_PID	0xE0ED	/* ELV Messwertuebertragung FM3 RX */
 #define FTDI_ELV_WS777_PID	0xE0EE	/* Conrad WS 777 */
-#define FTDI_ELV_EM1010PC_PID	0xE0EF	/* Engery monitor EM 1010 PC */
+#define FTDI_ELV_EM1010PC_PID	0xE0EF	/* Energy monitor EM 1010 PC */
 #define FTDI_ELV_CSI8_PID	0xE0F0	/* Computer-Schalt-Interface (CSI 8) */
 #define FTDI_ELV_EM1000DL_PID	0xE0F1	/* PC-Datenlogger fuer Energiemonitor (EM 1000 DL) */
 #define FTDI_ELV_PCK100_PID	0xE0F2	/* PC-Kabeltester (PCK 100) */
···
  * drivers, or possibly the Comedi drivers in some cases. */
 #define FTDI_ELV_CLI7000_PID	0xFB59	/* Computer-Light-Interface (CLI 7000) */
 #define FTDI_ELV_PPS7330_PID	0xFB5C	/* Processor-Power-Supply (PPS 7330) */
-#define FTDI_ELV_TFM100_PID	0xFB5D	/* Temperartur-Feuchte Messgeraet (TFM 100) */
-#define FTDI_ELV_UDF77_PID	0xFB5E	/* USB DCF Funkurh (UDF 77) */
+#define FTDI_ELV_TFM100_PID	0xFB5D	/* Temperatur-Feuchte-Messgeraet (TFM 100) */
+#define FTDI_ELV_UDF77_PID	0xFB5E	/* USB DCF Funkuhr (UDF 77) */
 #define FTDI_ELV_UIO88_PID	0xFB5F	/* USB-I/O Interface (UIO 88) */
 
 /*
···
 
 /*
  * 4N-GALAXY.DE PIDs for CAN-USB, USB-RS232, USB-RS422, USB-RS485,
- * USB-TTY activ, USB-TTY passiv.  Some PIDs are used by several devices
+ * USB-TTY aktiv, USB-TTY passiv.  Some PIDs are used by several devices
  * and I'm not entirely sure which are used by which.
  */
 #define FTDI_4N_GALAXY_DE_1_PID	0xF3C0
···
  * Linx Technologies product ids
  */
 #define LINX_SDMUSBQSS_PID	0xF448	/* Linx SDM-USB-QS-S */
-#define LINX_MASTERDEVEL2_PID   0xF449   /* Linx Master Development 2.0 */
-#define LINX_FUTURE_0_PID   0xF44A   /* Linx future device */
-#define LINX_FUTURE_1_PID   0xF44B   /* Linx future device */
-#define LINX_FUTURE_2_PID   0xF44C   /* Linx future device */
+#define LINX_MASTERDEVEL2_PID   0xF449	/* Linx Master Development 2.0 */
+#define LINX_FUTURE_0_PID   0xF44A	/* Linx future device */
+#define LINX_FUTURE_1_PID   0xF44B	/* Linx future device */
+#define LINX_FUTURE_2_PID   0xF44C	/* Linx future device */
 
 /*
  * Oceanic product ids
···
 #define RATOC_PRODUCT_ID_USB60F	0xb020
 
 /*
+ * Contec products (http://www.contec.com)
+ * Submitted by Daniel Sangorrin
+ */
+#define CONTEC_VID		0x06CE	/* Vendor ID */
+#define CONTEC_COM1USBH_PID	0x8311	/* COM-1(USB)H */
+
+/*
  * Definitions for B&B Electronics products.
  */
 #define BANDB_VID		0x0856	/* B&B Electronics Vendor ID */
···
 #define FALCOM_TWIST_PID	0x0001	/* Falcom Twist USB GPRS modem */
 #define FALCOM_SAMBA_PID	0x0005	/* Falcom Samba USB GPRS modem */
 
-/* Larsen and Brusgaard AltiTrack/USBtrack  */
+/* Larsen and Brusgaard AltiTrack/USBtrack */
 #define LARSENBRUSGAARD_VID		0x0FD8
 #define LB_ALTITRACK_PID		0x0001
 
···
 #define ALTI2_N3_PID	0x6001	/* Neptune 3 */
 
 /*
- * Dresden Elektronic Sensor Terminal Board
+ * Dresden Elektronik Sensor Terminal Board
  */
 #define DE_VID			0x1cf1 /* Vendor ID */
 #define STB_PID			0x0001 /* Sensor Terminal Board */
···
 #define EVO_8U232AM_PID	0x02FF	/* Evolution robotics RCM2 (FT232AM)*/
 #define EVO_HYBRID_PID		0x0302	/* Evolution robotics RCM4 PID (FT232BM)*/
 #define EVO_RCM4_PID		0x0303	/* Evolution robotics RCM4 PID */
+
+/*
+ * MJS Gadgets HD Radio / XM Radio / Sirius Radio interfaces (using VID 0x0403)
+ */
+#define MJSG_GENERIC_PID	0x9378
+#define MJSG_SR_RADIO_PID	0x9379
+#define MJSG_XM_RADIO_PID	0x937A
+#define MJSG_HD_RADIO_PID	0x937C

drivers/usb/serial/funsoft.c

···
 
 static int debug;
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x1404, 0xcddc) },
 	{ },
 };

drivers/usb/serial/garmin_gps.c

···
 
 
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	/* the same device id seems to be used by all
 	   usb enabled GPS devices */
 	{ USB_DEVICE(GARMIN_VENDOR_ID, 3) },
···
 		usb_serial_debug_data(debug, &port->dev,
 					__func__, actual_length, data);
 
-		tty_buffer_request_room(tty, actual_length);
 		tty_insert_flip_string(tty, data, actual_length);
 		tty_flip_buffer_push(tty);
 	}

drivers/usb/serial/generic.c

···
 #include <linux/usb/serial.h>
 #include <linux/uaccess.h>
 #include <linux/kfifo.h>
+#include <linux/serial.h>
 
 static int debug;
 
···
 
 /* we want to look at all devices, as the vendor/product id can change
  * depending on the command line argument */
-static struct usb_device_id generic_serial_ids[] = {
+static const struct usb_device_id generic_serial_ids[] = {
 	{.driver_info = 42},
 	{}
 };
···
 		if (port->urbs_in_flight >
 		    port->serial->type->max_in_flight_urbs) {
 			spin_unlock_irqrestore(&port->lock, flags);
-			dbg("%s - write limit hit\n", __func__);
+			dbg("%s - write limit hit", __func__);
 			return bwrite;
 		}
 		port->tx_bytes_flight += towrite;
···
 
 	for (i = 0; i < serial->num_ports; i++) {
 		port = serial->port[i];
-		if (!port->port.count)
+		if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags))
 			continue;
 
 		if (port->read_urb) {

drivers/usb/serial/hp4x.c

···
 #define HP_VENDOR_ID 0x03f0
 #define HP49GP_PRODUCT_ID 0x0121
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(HP_VENDOR_ID, HP49GP_PRODUCT_ID) },
 	{ }					/* Terminating entry */
 };

drivers/usb/serial/io_edgeport.c

···
 	release_firmware(fw);
 }
 
-
-/************************************************************************
- *									*
- *  Get string descriptor from device					*
- *									*
- ************************************************************************/
-static int get_string(struct usb_device *dev, int Id, char *string, int buflen)
-{
-	struct usb_string_descriptor StringDesc;
-	struct usb_string_descriptor *pStringDesc;
-
-	dbg("%s - USB String ID = %d", __func__, Id);
-
-	if (!usb_get_descriptor(dev, USB_DT_STRING, Id,
-					&StringDesc, sizeof(StringDesc)))
-		return 0;
-
-	pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
-	if (!pStringDesc)
-		return 0;
-
-	if (!usb_get_descriptor(dev, USB_DT_STRING, Id,
-					pStringDesc, StringDesc.bLength)) {
-		kfree(pStringDesc);
-		return 0;
-	}
-
-	unicode_to_ascii(string, buflen,
-				pStringDesc->wData, pStringDesc->bLength/2);
-
-	kfree(pStringDesc);
-	dbg("%s - USB String %s", __func__, string);
-	return strlen(string);
-}
-
-
 #if 0
 /************************************************************************
  *
···
 			return;
 
 		case IOSP_EXT_STATUS_RX_CHECK_RSP:
-			dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __func__, edge_serial->rxPort, byte3);
+			dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============", __func__, edge_serial->rxPort, byte3);
 			/* Port->RxCheckRsp = true; */
 			return;
 		}
···
 		break;
 
 	default:
-		dbg("%s - Unrecognized IOSP status code %u\n", __func__, code);
+		dbg("%s - Unrecognized IOSP status code %u", __func__, code);
 		break;
 	}
 	return;
···
 {
 	int cnt;
 
-	do {
-		cnt = tty_buffer_request_room(tty, length);
-		if (cnt < length) {
-			dev_err(dev, "%s - dropping data, %d bytes lost\n",
-					__func__, length - cnt);
-			if (cnt == 0)
-				break;
-		}
-		tty_insert_flip_string(tty, data, cnt);
-		data += cnt;
-		length -= cnt;
-	} while (length > 0);
+	cnt = tty_insert_flip_string(tty, data, length);
+	if (cnt < length) {
+		dev_err(dev, "%s - dropping data, %d bytes lost\n",
+				__func__, length - cnt);
+	}
+	data += cnt;
+	length -= cnt;
 
 	tty_flip_buffer_push(tty);
 }
···
 
 		*divisor = custom;
 
-		dbg("%s - Baud %d = %d\n", __func__, baudrate, custom);
+		dbg("%s - Baud %d = %d", __func__, baudrate, custom);
 		return 0;
 	}
 
···
 			break;
 
 		case EDGE_DOWNLOAD_FILE_NONE:
-			dbg     ("No download file specified, skipping download\n");
+			dbg("No download file specified, skipping download");
 			return;
 
 		default:
···
 	usb_set_serial_data(serial, edge_serial);
 
 	/* get the name for the device from the device */
-	i = get_string(dev, dev->descriptor.iManufacturer,
+	i = usb_string(dev, dev->descriptor.iManufacturer,
 	    &edge_serial->name[0], MAX_NAME_LEN+1);
+	if (i < 0)
+		i = 0;
 	edge_serial->name[i++] = ' ';
-	get_string(dev, dev->descriptor.iProduct,
+	usb_string(dev, dev->descriptor.iProduct,
 	    &edge_serial->name[i], MAX_NAME_LEN+2 - i);
 
 	dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);

drivers/usb/serial/io_tables.h

···
 #ifndef IO_TABLES_H
 #define IO_TABLES_H
 
-static struct usb_device_id edgeport_2port_id_table [] = {
+static const struct usb_device_id edgeport_2port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
···
 	{ }
 };
 
-static struct usb_device_id edgeport_4port_id_table [] = {
+static const struct usb_device_id edgeport_4port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
···
 	{ }
 };
 
-static struct usb_device_id edgeport_8port_id_table [] = {
+static const struct usb_device_id edgeport_8port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
···
 	{ }
 };
 
-static struct usb_device_id Epic_port_id_table [] = {
+static const struct usb_device_id Epic_port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
 	{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
 	{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
···
 };
 
 /* Devices that this driver supports */
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION,	ION_DEVICE_ID_EDGEPORT_4) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION,	ION_DEVICE_ID_RAPIDPORT_4) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION,	ION_DEVICE_ID_EDGEPORT_4T) },

drivers/usb/serial/io_ti.c

···
 
 
 /* Devices that this driver supports */
-static struct usb_device_id edgeport_1port_id_table [] = {
+static const struct usb_device_id edgeport_1port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
···
 	{ }
 };
 
-static struct usb_device_id edgeport_2port_id_table [] = {
+static const struct usb_device_id edgeport_2port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
···
 };
 
 /* Devices that this driver supports */
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 	{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
···
 {
 	int status = 0;
 	int i;
-	__u8 temp;
+	u8 *temp;
 
 	/* Must do a read before write */
 	if (!serial->TiReadI2C) {
-		status = read_boot_mem(serial, 0, 1, &temp);
+		temp = kmalloc(1, GFP_KERNEL);
+		if (!temp) {
+			dev_err(&serial->serial->dev->dev,
+					"%s - out of memory\n", __func__);
+			return -ENOMEM;
+		}
+		status = read_boot_mem(serial, 0, 1, temp);
+		kfree(temp);
 		if (status)
 			return status;
 	}
···
 static int i2c_type_bootmode(struct edgeport_serial *serial)
 {
 	int status;
-	__u8 data;
+	u8 *data;
+
+	data = kmalloc(1, GFP_KERNEL);
+	if (!data) {
+		dev_err(&serial->serial->dev->dev,
+				"%s - out of memory\n", __func__);
+		return -ENOMEM;
+	}
 
 	/* Try to read type 2 */
 	status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
-				DTK_ADDR_SPACE_I2C_TYPE_II, 0, &data, 0x01);
+				DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 	if (status)
 		dbg("%s - read 2 status error = %d", __func__, status);
 	else
-		dbg("%s - read 2 data = 0x%x", __func__, data);
-	if ((!status) && (data == UMP5152 || data == UMP3410)) {
+		dbg("%s - read 2 data = 0x%x", __func__, *data);
+	if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 		dbg("%s - ROM_TYPE_II", __func__);
 		serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
-		return 0;
+		goto out;
 	}
 
 	/* Try to read type 3 */
 	status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
-				DTK_ADDR_SPACE_I2C_TYPE_III, 0,	&data, 0x01);
+				DTK_ADDR_SPACE_I2C_TYPE_III, 0,	data, 0x01);
 	if (status)
 		dbg("%s - read 3 status error = %d", __func__, status);
 	else
-		dbg("%s - read 2 data = 0x%x", __func__, data);
-	if ((!status) && (data == UMP5152 || data == UMP3410)) {
+		dbg("%s - read 2 data = 0x%x", __func__, *data);
+	if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 		dbg("%s - ROM_TYPE_III", __func__);
 		serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
-		return 0;
+		goto out;
 	}
 
 	dbg("%s - Unknown", __func__);
 	serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
-	return -ENODEV;
+	status = -ENODEV;
+out:
+	kfree(data);
+	return status;
 }
 
 static int bulk_xfer(struct usb_serial *serial, void *buffer,
···
 				I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
 		if (start_address != 0) {
 			struct ti_i2c_firmware_rec *firmware_version;
-			__u8 record;
+			u8 *record;
 
 			dbg("%s - Found Type FIRMWARE (Type 2) record",
 								__func__);
···
 				    OperationalMajorVersion,
 				    OperationalMinorVersion);
 
+				record = kmalloc(1, GFP_KERNEL);
+				if (!record) {
+					dev_err(dev, "%s - out of memory.\n",
+							__func__);
+					kfree(firmware_version);
+					kfree(rom_desc);
+					kfree(ti_manuf_desc);
+					return -ENOMEM;
+				}
 				/* In order to update the I2C firmware we must
 				 * change the type 2 record to type 0xF2. This
 				 * will force the UMP to come up in Boot Mode.
···
 				 * firmware will update the record type from
 				 * 0xf2 to 0x02.
 				 */
-				record = I2C_DESC_TYPE_FIRMWARE_BLANK;
+				*record = I2C_DESC_TYPE_FIRMWARE_BLANK;
 
 				/* Change the I2C Firmware record type to
 				   0xf2 to trigger an update */
 				status = write_rom(serial, start_address,
-						sizeof(record),	&record);
+						sizeof(*record), record);
 				if (status) {
+					kfree(record);
 					kfree(firmware_version);
 					kfree(rom_desc);
 					kfree(ti_manuf_desc);
···
 				 */
 				status = read_rom(serial,
 							start_address,
-							sizeof(record),
-							&record);
+							sizeof(*record),
+							record);
 				if (status) {
+					kfree(record);
 					kfree(firmware_version);
 					kfree(rom_desc);
 					kfree(ti_manuf_desc);
 					return status;
 				}
 
-				if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
+				if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
 					dev_err(dev,
 						"%s - error resetting device\n",
 						__func__);
+					kfree(record);
 					kfree(firmware_version);
 					kfree(rom_desc);
 					kfree(ti_manuf_desc);
···
 						__func__, status);
 
 				/* return an error on purpose. */
+				kfree(record);
 				kfree(firmware_version);
 				kfree(rom_desc);
 				kfree(ti_manuf_desc);
···
 	case TIUMP_INTERRUPT_CODE_MSR:	/* MSR */
 		/* Copy MSR from UMP */
 		msr = data[1];
-		dbg("%s - ===== Port %u MSR Status = %02x ======\n",
+		dbg("%s - ===== Port %u MSR Status = %02x ======",
 		     __func__, port_number, msr);
 		handle_new_msr(edge_port, msr);
 		break;
···
 {
 	int queued;
 
-	tty_buffer_request_room(tty, length);
 	queued = tty_insert_flip_string(tty, data, length);
 	if (queued < length)
 		dev_err(dev, "%s - dropping data, %d bytes lost\n",

drivers/usb/serial/ipaq.c

···
 
 	tty = tty_port_tty_get(&port->port);
 	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 		bytes_in += urb->actual_length;

drivers/usb/serial/ipw.c

···
 
 #define IPW_WANTS_TO_SEND	0x30
 
-static struct usb_device_id usb_ipw_ids[] = {
+static const struct usb_device_id usb_ipw_ids[] = {
 	{ USB_DEVICE(IPW_VID, IPW_PID) },
 	{ },
 };
···
 
 	tty = tty_port_tty_get(&port->port);
 	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 	}

drivers/usb/serial/ir-usb.c

···
 static u8 ir_xbof;
 static u8 ir_add_bof;
 
-static struct usb_device_id ir_id_table[] = {
+static const struct usb_device_id ir_id_table[] = {
 	{ USB_DEVICE(0x050f, 0x0180) },		/* KC Technology, KC-180 */
 	{ USB_DEVICE(0x08e9, 0x0100) },		/* XTNDAccess */
 	{ USB_DEVICE(0x09c4, 0x0011) },		/* ACTiSys ACT-IR2000U */
···
 
 	dbg("%s - port %d", __func__, port->number);
 
-	if (!port->port.count) {
-		dbg("%s - port closed.", __func__);
-		return;
-	}
-
 	switch (status) {
 	case 0: /* Successful */
 		/*
···
 		usb_serial_debug_data(debug, &port->dev, __func__,
 						urb->actual_length, data);
 		tty = tty_port_tty_get(&port->port);
-		if (tty_buffer_request_room(tty, urb->actual_length - 1)) {
-			tty_insert_flip_string(tty, data+1, urb->actual_length - 1);
-			tty_flip_buffer_push(tty);
-		}
+		tty_insert_flip_string(tty, data+1, urb->actual_length - 1);
+		tty_flip_buffer_push(tty);
 		tty_kref_put(tty);
 
 		/*

drivers/usb/serial/iuu_phoenix.c

···
 #define DRIVER_VERSION "v0.11"
 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
 	{}			/* Terminating entry */
 };

drivers/usb/serial/keyspan.c

···
 
 	/* Resubmit urb so we continue receiving */
 	urb->dev = port->serial->dev;
-	if (port->port.count) {
-		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (err != 0)
-			dbg("%s - resubmit read urb failed. (%d)",
-					__func__, err);
-	}
-	return;
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err != 0)
+		dbg("%s - resubmit read urb failed. (%d)", __func__, err);
 }
 
 /* Outdat handling is common for all devices */
···
 	p_priv = usb_get_serial_port_data(port);
 	dbg("%s - urb %d", __func__, urb == p_priv->out_urbs[1]);
 
-	if (port->port.count)
-		usb_serial_port_softint(port);
+	usb_serial_port_softint(port);
 }
 
 static void	usa26_inack_callback(struct urb *urb)
···
 
 		/* Resubmit urb so we continue receiving */
 		urb->dev = port->serial->dev;
-		if (port->port.count) {
-			err = usb_submit_urb(urb, GFP_ATOMIC);
-			if (err != 0)
-				dbg("%s - resubmit read urb failed. (%d)",
-								__func__, err);
-		}
+		err = usb_submit_urb(urb, GFP_ATOMIC);
+		if (err != 0)
+			dbg("%s - resubmit read urb failed. (%d)",
+							__func__, err);
 		p_priv->in_flip ^= 1;
 
 		urb = p_priv->in_urbs[p_priv->in_flip];
···
 
 	/* Resubmit urb so we continue receiving */
 	urb->dev = port->serial->dev;
-	if (port->port.count) {
-		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (err != 0)
-			dbg("%s - resubmit read urb failed. (%d)",
-							__func__, err);
-	}
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err != 0)
+		dbg("%s - resubmit read urb failed. (%d)", __func__, err);
 }
 
 static void usa49wg_indat_callback(struct urb *urb)
···
 				/* no error on any byte */
 				i++;
 				for (x = 1; x < len ; ++x)
-					if (port->port.count)
-						tty_insert_flip_char(tty,
-								data[i++], 0);
-					else
-						i++;
+					tty_insert_flip_char(tty, data[i++], 0);
 			} else {
 				/*
 				 * some bytes had errors, every byte has status
···
 					if (stat & RXERROR_PARITY)
 						flag |= TTY_PARITY;
 					/* XXX should handle break (0x10) */
-					if (port->port.count)
-						tty_insert_flip_char(tty,
+					tty_insert_flip_char(tty,
 							data[i+1], flag);
 					i += 2;
 				}
 			}
-			if (port->port.count)
-				tty_flip_buffer_push(tty);
+			tty_flip_buffer_push(tty);
 			tty_kref_put(tty);
 		}
 	}
···
 
 	/* Resubmit urb so we continue receiving */
 	urb->dev = port->serial->dev;
-	if (port->port.count) {
-		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (err != 0)
-			dbg("%s - resubmit read urb failed. (%d)",
-							__func__, err);
-	}
-	return;
+	err = usb_submit_urb(urb, GFP_ATOMIC);
+	if (err != 0)
+		dbg("%s - resubmit read urb failed. (%d)", __func__, err);
 }
 
 
···
 		msg.portEnabled = 0;
 	/* Sending intermediate configs */
 	else {
-		if (port->port.count)
-			msg.portEnabled = 1;
+		msg.portEnabled = 1;
 		msg.txBreak = (p_priv->break_on);
 	}
 

drivers/usb/serial/keyspan.h

···
 	NULL,
 };
 
-static struct usb_device_id keyspan_ids_combined[] = {
+static const struct usb_device_id keyspan_ids_combined[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
···
 };
 
 /* usb_device_id table for the pre-firmware download keyspan devices */
-static struct usb_device_id keyspan_pre_ids[] = {
+static const struct usb_device_id keyspan_pre_ids[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
···
 	{ } /* Terminating entry */
 };
 
-static struct usb_device_id keyspan_1port_ids[] = {
+static const struct usb_device_id keyspan_1port_ids[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
···
 	{ } /* Terminating entry */
 };
 
-static struct usb_device_id keyspan_2port_ids[] = {
+static const struct usb_device_id keyspan_2port_ids[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
···
 	{ } /* Terminating entry */
 };
 
-static struct usb_device_id keyspan_4port_ids[] = {
+static const struct usb_device_id keyspan_4port_ids[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id) },
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},

drivers/usb/serial/keyspan_pda.c

···
 #define ENTREGRA_VENDOR_ID		0x1645
 #define ENTREGRA_FAKE_ID		0x8093
 
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 #ifdef KEYSPAN
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
 #endif
···
 	.no_dynamic_id = 	1,
 };
 
-static struct usb_device_id id_table_std [] = {
+static const struct usb_device_id id_table_std[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
 	{ }						/* Terminating entry */
 };
 
 #ifdef KEYSPAN
-static struct usb_device_id id_table_fake [] = {
+static const struct usb_device_id id_table_fake[] = {
 	{ USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
 	{ }						/* Terminating entry */
 };
 #endif
 
 #ifdef XIRCOM
-static struct usb_device_id id_table_fake_xircom [] = {
+static const struct usb_device_id id_table_fake_xircom[] = {
 	{ USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
 	{ USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
 	{ }
···
 				      unsigned char *value)
 {
 	int rc;
-	unsigned char data;
+	u8 *data;
+
+	data = kmalloc(1, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
 	rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 			     3, /* get pins */
 			     USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
-			     0, 0, &data, 1, 2000);
+			     0, 0, data, 1, 2000);
 	if (rc >= 0)
-		*value = data;
+		*value = *data;
+
+	kfree(data);
 	return rc;
 }
 
···
 	   device how much room it really has.  This is done only on
 	   scheduler time, since usb_control_msg() sleeps. */
 	if (count > priv->tx_room && !in_interrupt()) {
-		unsigned char room;
+		u8 *room;
+
+		room = kmalloc(1, GFP_KERNEL);
+		if (!room) {
+			rc = -ENOMEM;
+			goto exit;
+		}
+
 		rc = usb_control_msg(serial->dev,
 				     usb_rcvctrlpipe(serial->dev, 0),
 				     6, /* write_room */
···
 				     | USB_DIR_IN,
 				     0, /* value: 0 means "remaining room" */
 				     0, /* index */
-				     &room,
+				     room,
 				     1,
 				     2000);
+		if (rc > 0) {
+			dbg(" roomquery says %d", *room);
+			priv->tx_room = *room;
+		}
+		kfree(room);
 		if (rc < 0) {
 			dbg(" roomquery failed");
 			goto exit;
···
 			rc = -EIO; /* device didn't return any data */
 			goto exit;
 		}
-		dbg(" roomquery says %d", room);
-		priv->tx_room = room;
 	}
 	if (count > priv->tx_room) {
 		/* we're about to completely fill the Tx buffer, so
···
 					struct usb_serial_port *port)
 {
 	struct usb_serial *serial = port->serial;
-	unsigned char room;
+	u8 *room;
 	int rc = 0;
 	struct keyspan_pda_private *priv;
 
 	/* find out how much room is in the Tx ring */
+	room = kmalloc(1, GFP_KERNEL);
+	if (!room)
+		return -ENOMEM;
+
 	rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 			     6, /* write_room */
 			     USB_TYPE_VENDOR | USB_RECIP_INTERFACE
 			     | USB_DIR_IN,
 			     0, /* value */
 			     0, /* index */
-			     &room,
+			     room,
 			     1,
 			     2000);
 	if (rc < 0) {
···
 		goto error;
 	}
 	priv = usb_get_serial_port_data(port);
-	priv->tx_room = room;
-	priv->tx_throttled = room ? 0 : 1;
+	priv->tx_room = *room;
+	priv->tx_throttled = *room ? 0 : 1;
 
 	/*Start reading from the device*/
 	port->interrupt_in_urb->dev = serial->dev;
···
 		dbg("%s - usb_submit_urb(read int) failed", __func__);
 		goto error;
 	}
-
 error:
+	kfree(room);
 	return rc;
 }
 static void keyspan_pda_close(struct usb_serial_port *port)

drivers/usb/serial/kl5kusb105.c

···
 /*
  * All of the device info needed for the KLSI converters.
  */
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
 	{ USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
 	{ }		/* Terminating entry */
···
 				   unsigned long *line_state_p)
 {
 	int rc;
-	__u8 status_buf[KLSI_STATUSBUF_LEN] = { -1, -1};
+	u8 *status_buf;
 	__u16 status;
 
 	dev_info(&port->serial->dev->dev, "sending SIO Poll request\n");
+
+	status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL);
+	if (!status_buf) {
+		dev_err(&port->dev, "%s - out of memory for status buffer.\n",
+				__func__);
+		return -ENOMEM;
+	}
+	status_buf[0] = 0xff;
+	status_buf[1] = 0xff;
 	rc = usb_control_msg(port->serial->dev,
 			     usb_rcvctrlpipe(port->serial->dev, 0),
 			     KL5KUSB105A_SIO_POLL,
···
 
 		*line_state_p = klsi_105_status2linestate(status);
 	}
+
+	kfree(status_buf);
 	return rc;
 }
 
···
 	int rc;
 	int i;
 	unsigned long line_state;
-	struct klsi_105_port_settings cfg;
+	struct klsi_105_port_settings *cfg;
 	unsigned long flags;
 
 	dbg("%s port %d", __func__, port->number);
···
 	 * Then read the modem line control and store values in
 	 * priv->line_state.
 	 */
-	cfg.pktlen   = 5;
-	cfg.baudrate = kl5kusb105a_sio_b9600;
-	cfg.databits = kl5kusb105a_dtb_8;
-	cfg.unknown1 = 0;
-	cfg.unknown2 = 1;
-	klsi_105_chg_port_settings(port, &cfg);
+	cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
+	if (!cfg) {
+		dev_err(&port->dev, "%s - out of memory for config buffer.\n",
+				__func__);
+		return -ENOMEM;
+	}
+	cfg->pktlen   = 5;
+	cfg->baudrate = kl5kusb105a_sio_b9600;
+	cfg->databits = kl5kusb105a_dtb_8;
+	cfg->unknown1 = 0;
+	cfg->unknown2 = 1;
+	klsi_105_chg_port_settings(port, cfg);
 
 	/* set up termios structure */
 	spin_lock_irqsave(&priv->lock, flags);
···
 	priv->termios.c_lflag = tty->termios->c_lflag;
 	for (i = 0; i < NCCS; i++)
 		priv->termios.c_cc[i] = tty->termios->c_cc[i];
-	priv->cfg.pktlen   = cfg.pktlen;
-	priv->cfg.baudrate = cfg.baudrate;
-	priv->cfg.databits = cfg.databits;
-	priv->cfg.unknown1 = cfg.unknown1;
-	priv->cfg.unknown2 = cfg.unknown2;
+	priv->cfg.pktlen   = cfg->pktlen;
+	priv->cfg.baudrate = cfg->baudrate;
+	priv->cfg.databits = cfg->databits;
+	priv->cfg.unknown1 = cfg->unknown1;
+	priv->cfg.unknown2 = cfg->unknown2;
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	/* READ_ON and urb submission */
···
 		retval = rc;
 
 exit:
+	kfree(cfg);
 	return retval;
 } /* klsi_105_open */
 
···
 			bytes_sent = urb->actual_length - 2;
 		}
 
-		tty_buffer_request_room(tty, bytes_sent);
 		tty_insert_flip_string(tty, data + 2, bytes_sent);
 		tty_flip_buffer_push(tty);
 		tty_kref_put(tty);
···
 	unsigned int old_iflag = old_termios->c_iflag;
 	unsigned int cflag = tty->termios->c_cflag;
 	unsigned int old_cflag = old_termios->c_cflag;
-	struct klsi_105_port_settings cfg;
+	struct klsi_105_port_settings *cfg;
 	unsigned long flags;
 	speed_t baud;
+
+	cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
+	if (!cfg) {
+		dev_err(&port->dev, "%s - out of memory for config buffer.\n",
+				__func__);
+		return;
+	}
 
 	/* lock while we are modifying the settings */
 	spin_lock_irqsave(&priv->lock, flags);
···
 		case CS5:
 			dbg("%s - 5 bits/byte not supported", __func__);
 			spin_unlock_irqrestore(&priv->lock, flags);
-			return ;
+			goto err;
 		case CS6:
 			dbg("%s - 6 bits/byte not supported", __func__);
 			spin_unlock_irqrestore(&priv->lock, flags);
-			return ;
+			goto err;
 		case CS7:
 			priv->cfg.databits = kl5kusb105a_dtb_7;
 			break;
···
 #endif
 		;
 	}
-	memcpy(&cfg, &priv->cfg, sizeof(cfg));
+	memcpy(cfg, &priv->cfg, sizeof(*cfg));
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	/* now commit changes to device */
-	klsi_105_chg_port_settings(port, &cfg);
+	klsi_105_chg_port_settings(port, cfg);
+err:
+	kfree(cfg);
 } /* klsi_105_set_termios */
 
 

drivers/usb/serial/kobil_sct.c

···
 			struct usb_serial_port *port, struct ktermios *old);
 static void kobil_init_termios(struct tty_struct *tty);
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
 	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
 	{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
···
 		*/
 		/* END DEBUG */
 
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 	}
···
 	unsigned short urb_val = 0;
 	int c_cflag = tty->termios->c_cflag;
 	speed_t speed;
-	void *settings;
 
 	priv = usb_get_serial_port_data(port);
 	if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
···
 	}
 	urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 							SUSBCR_SPASB_1StopBit;
-
-	settings = kzalloc(50, GFP_KERNEL);
-	if (!settings)
-		return;
-
-	sprintf(settings, "%d ", speed);
-
 	if (c_cflag & PARENB) {
-		if  (c_cflag & PARODD) {
+		if  (c_cflag & PARODD)
 			urb_val |= SUSBCR_SPASB_OddParity;
-			strcat(settings, "Odd Parity");
-		} else {
+		else
 			urb_val |= SUSBCR_SPASB_EvenParity;
-			strcat(settings, "Even Parity");
-		}
-	} else {
+	} else
 		urb_val |= SUSBCR_SPASB_NoParity;
-		strcat(settings, "No Parity");
-	}
 	tty->termios->c_cflag &= ~CMSPAR;
 	tty_encode_baud_rate(tty, speed, speed);
 
···
 		  USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 		  urb_val,
 		  0,
-		  settings,
+		  NULL,
 		  0,
 		  KOBIL_TIMEOUT
 		);
-	kfree(settings);
 }
 
 static int kobil_ioctl(struct tty_struct *tty, struct file *file,

drivers/usb/serial/mct_u232.c

···
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/uaccess.h>
+#include <asm/unaligned.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
 #include "mct_u232.h"
···
 /*
  * All of the device info needed for the MCT USB-RS232 converter.
  */
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(MCT_U232_VID, MCT_U232_PID) },
 	{ USB_DEVICE(MCT_U232_VID, MCT_U232_SITECOM_PID) },
 	{ USB_DEVICE(MCT_U232_VID, MCT_U232_DU_H3SP_PID) },
···
 static int mct_u232_set_baud_rate(struct tty_struct *tty,
 	struct usb_serial *serial, struct usb_serial_port *port, speed_t value)
 {
-	__le32 divisor;
+	unsigned int divisor;
 	int rc;
-	unsigned char zero_byte = 0;
+	unsigned char *buf;
 	unsigned char cts_enable_byte = 0;
 	speed_t speed;
 
-	divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value,
-								&speed));
+	buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
 
+	divisor = mct_u232_calculate_baud_rate(serial, value, &speed);
+	put_unaligned_le32(cpu_to_le32(divisor), buf);
 	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 				MCT_U232_SET_BAUD_RATE_REQUEST,
 				MCT_U232_SET_REQUEST_TYPE,
-				0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE,
+				0, 0, buf, MCT_U232_SET_BAUD_RATE_SIZE,
 				WDR_TIMEOUT);
 	if (rc < 0)	/*FIXME: What value speed results */
 		dev_err(&port->dev, "Set BAUD RATE %d failed (error = %d)\n",
···
 	   a device which is not asserting 'CTS'.
 	*/
 
+	buf[0] = 0;
 	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 				MCT_U232_SET_UNKNOWN1_REQUEST,
 				MCT_U232_SET_REQUEST_TYPE,
-				0, 0, &zero_byte, MCT_U232_SET_UNKNOWN1_SIZE,
+				0, 0, buf, MCT_U232_SET_UNKNOWN1_SIZE,
 				WDR_TIMEOUT);
 	if (rc < 0)
 		dev_err(&port->dev, "Sending USB device request code %d "
···
 
 	dbg("set_baud_rate: send second control message, data = %02X",
 							cts_enable_byte);
+	buf[0] = cts_enable_byte;
 	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 			MCT_U232_SET_CTS_REQUEST,
 			MCT_U232_SET_REQUEST_TYPE,
-			0, 0, &cts_enable_byte, MCT_U232_SET_CTS_SIZE,
+			0, 0, buf, MCT_U232_SET_CTS_SIZE,
 			WDR_TIMEOUT);
 	if (rc < 0)
 		dev_err(&port->dev, "Sending USB device request code %d "
 			"failed (error = %d)\n", MCT_U232_SET_CTS_REQUEST, rc);
 
+	kfree(buf);
 	return rc;
 } /* mct_u232_set_baud_rate */
 
 static int mct_u232_set_line_ctrl(struct usb_serial *serial, unsigned char lcr)
 {
 	int rc;
+	unsigned char *buf;
+
+	buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+	buf[0] = lcr;
 	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 			MCT_U232_SET_LINE_CTRL_REQUEST,
 			MCT_U232_SET_REQUEST_TYPE,
-			0, 0, &lcr, MCT_U232_SET_LINE_CTRL_SIZE,
+			0, 0, buf, MCT_U232_SET_LINE_CTRL_SIZE,
 			WDR_TIMEOUT);
 	if (rc < 0)
 		dev_err(&serial->dev->dev,
 			"Set LINE CTRL 0x%x failed (error = %d)\n", lcr, rc);
 	dbg("set_line_ctrl: 0x%x", lcr);
+	kfree(buf);
 	return rc;
 } /* mct_u232_set_line_ctrl */
 
···
 				   unsigned int control_state)
 {
 	int rc;
-	unsigned char mcr = MCT_U232_MCR_NONE;
+	unsigned char mcr;
+	unsigned char *buf;
 
+	buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+	mcr = MCT_U232_MCR_NONE;
 	if (control_state & TIOCM_DTR)
 		mcr |= MCT_U232_MCR_DTR;
 	if (control_state & TIOCM_RTS)
 		mcr |= MCT_U232_MCR_RTS;
 
+	buf[0] = mcr;
 	rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
 			MCT_U232_SET_MODEM_CTRL_REQUEST,
 			MCT_U232_SET_REQUEST_TYPE,
-			0, 0, &mcr, MCT_U232_SET_MODEM_CTRL_SIZE,
+			0, 0, buf, MCT_U232_SET_MODEM_CTRL_SIZE,
 			WDR_TIMEOUT);
 	if (rc < 0)
 		dev_err(&serial->dev->dev,
 			"Set MODEM CTRL 0x%x failed (error = %d)\n", mcr, rc);
 	dbg("set_modem_ctrl: state=0x%x ==> mcr=0x%x", control_state, mcr);
 
+	kfree(buf);
 	return rc;
 } /* mct_u232_set_modem_ctrl */
 
···
 						unsigned char *msr)
 {
 	int rc;
+	unsigned char *buf;
+
+	buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+	if (buf == NULL) {
+		*msr = 0;
+		return -ENOMEM;
+	}
 	rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 			MCT_U232_GET_MODEM_STAT_REQUEST,
 			MCT_U232_GET_REQUEST_TYPE,
-			0, 0, msr, MCT_U232_GET_MODEM_STAT_SIZE,
+			0, 0, buf, MCT_U232_GET_MODEM_STAT_SIZE,
 			WDR_TIMEOUT);
 	if (rc < 0) {
 		dev_err(&serial->dev->dev,
 			"Get MODEM STATus failed (error = %d)\n", rc);
 		*msr = 0;
+	} else {
+		*msr = buf[0];
 	}
 	dbg("get_modem_stat: 0x%x", *msr);
+	kfree(buf);
 	return rc;
 } /* mct_u232_get_modem_stat */
 

drivers/usb/serial/mct_u232.h

···
 #define MCT_U232_SET_CTS_REQUEST   12
 #define MCT_U232_SET_CTS_SIZE       1
 
+#define MCT_U232_MAX_SIZE		4	/* of MCT_XXX_SIZE */
+
 /*
  * Baud rate (divisor)
  * Actually, there are two of them, MCT website calls them "Philips solution"

drivers/usb/serial/mos7720.c

···
 
 static int debug;
 
+static struct usb_serial_driver moschip7720_2port_driver;
+
 #define USB_VENDOR_ID_MOSCHIP		0x9710
 #define MOSCHIP_DEVICE_ID_7720		0x7720
 #define MOSCHIP_DEVICE_ID_7715		0x7715
 
-static struct usb_device_id moschip_port_id_table[] = {
+static const struct usb_device_id moschip_port_id_table[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7720) },
+	{ USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7715) },
 	{ } /* terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, moschip_port_id_table);
···
 	__u8 sp1;
 	__u8 sp2;
 
-	dbg("%s", " : Entering\n");
+	dbg(" : Entering");
 
 	switch (status) {
 	case 0:
···
 }
 
 /*
+ * mos7715_interrupt_callback
+ *	this is the 7715's callback function for when we have received data on
+ *	the interrupt endpoint.
+ */
+static void mos7715_interrupt_callback(struct urb *urb)
+{
+	int result;
+	int length;
+	int status = urb->status;
+	__u8 *data;
+	__u8 iir;
+
+	switch (status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dbg("%s - urb shutting down with status: %d", __func__,
+		    status);
+		return;
+	default:
+		dbg("%s - nonzero urb status received: %d", __func__,
+		    status);
+		goto exit;
+	}
+
+	length = urb->actual_length;
+	data = urb->transfer_buffer;
+
+	/* Structure of data from 7715 device:
+	 * Byte 1: IIR serial Port
+	 * Byte 2: unused
+	 * Byte 2: DSR parallel port
+	 * Byte 4: FIFO status for both */
+
+	if (unlikely(length != 4)) {
+		dbg("Wrong data !!!");
+		return;
+	}
+
+	iir = data[0];
+	if (!(iir & 0x01)) {	/* serial port interrupt pending */
+		switch (iir & 0x0f) {
+		case SERIAL_IIR_RLS:
+			dbg("Serial Port: Receiver status error or address "
+			    "bit detected in 9-bit mode\n");
+			break;
+		case SERIAL_IIR_CTI:
+			dbg("Serial Port: Receiver time out");
+			break;
+		case SERIAL_IIR_MS:
+			dbg("Serial Port: Modem status change");
+			break;
+		}
+	}
+
+exit:
+	result = usb_submit_urb(urb, GFP_ATOMIC);
+	if (result)
+		dev_err(&urb->dev->dev,
+			"%s - Error %d submitting control urb\n",
+			__func__, result);
+	return;
+}
+
+/*
  * mos7720_bulk_in_callback
  *	this is the callback function for when we have received data on the
  *	bulk in endpoint.
···
 
 	mos7720_port = urb->context;
 	if (!mos7720_port) {
-		dbg("%s", "NULL mos7720_port pointer \n");
+		dbg("NULL mos7720_port pointer");
 		return ;
 	}
 
···
 
 	tty = tty_port_tty_get(&port->port);
 	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 	}
···
  *	this function will be used for sending command to device
  */
 static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value,
-			__u16 index, void *data)
+			__u16 index, u8 *data)
 {
 	int status;
-	unsigned int pipe;
+	u8 *buf;
 	u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
-	__u8 requesttype;
-	__u16 size = 0x0000;
 
 	if (value < MOS_MAX_PORT) {
 		if (product == MOSCHIP_DEVICE_ID_7715)
-			value = value*0x100+0x100;
+			value = 0x0200; /* identifies the 7715's serial port */
 		else
 			value = value*0x100+0x200;
 	} else {
···
 	}
 
 	if (request == MOS_WRITE) {
-		request = (__u8)MOS_WRITE;
-		requesttype = (__u8)0x40;
-		value  = value + (__u16)*((unsigned char *)data);
-		data = NULL;
-		pipe = usb_sndctrlpipe(serial->dev, 0);
+		value = value + *data;
+		status = usb_control_msg(serial->dev,
+				usb_sndctrlpipe(serial->dev, 0), MOS_WRITE,
+				0x40, value, index, NULL, 0, MOS_WDR_TIMEOUT);
 	} else {
-		request = (__u8)MOS_READ;
-		requesttype = (__u8)0xC0;
-		size = 0x01;
-		pipe = usb_rcvctrlpipe(serial->dev, 0);
+		buf = kmalloc(1, GFP_KERNEL);
+		if (!buf) {
+			status = -ENOMEM;
+			goto out;
+		}
+		status = usb_control_msg(serial->dev,
+				usb_rcvctrlpipe(serial->dev, 0), MOS_READ,
+				0xc0, value, index, buf, 1, MOS_WDR_TIMEOUT);
+		*data = *buf;
+		kfree(buf);
 	}
-
-	status = usb_control_msg(serial->dev, pipe, request, requesttype,
-				 value, index, data, size, MOS_WDR_TIMEOUT);
-
+out:
 	if (status < 0)
-		dbg("Command Write failed Value %x index %x\n", value, index);
+		dbg("Command Write failed Value %x index %x", value, index);
 
 	return status;
+}
+
+
+/*
+ * mos77xx_probe
+ *	this function installs the appropriate read interrupt endpoint callback
+ *	depending on whether the device is a 7720 or 7715, thus avoiding costly
+ *	run-time checks in the high-frequency callback routine itself.
+ */
+static int mos77xx_probe(struct usb_serial *serial,
+			 const struct usb_device_id *id)
+{
+	if (id->idProduct == MOSCHIP_DEVICE_ID_7715)
+		moschip7720_2port_driver.read_int_callback =
+			mos7715_interrupt_callback;
+	else
+		moschip7720_2port_driver.read_int_callback =
+			mos7720_interrupt_callback;
+
+	return 0;
+}
+
+static int mos77xx_calc_num_ports(struct usb_serial *serial)
+{
+	u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
+	if (product == MOSCHIP_DEVICE_ID_7715)
+		return 1;
+
+	return 2;
 }
 
 static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port)
···
 	  */
 	port_number = port->number - port->serial->minor;
 	send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data);
-	dbg("SS::%p LSR:%x\n", mos7720_port, data);
+	dbg("SS::%p LSR:%x", mos7720_port, data);
 
 	dbg("Check:Sending Command ..........");
 
···
 	struct moschip_port *mos7720_port;
 	int status;
 
-	dbg("%s- port %d\n", __func__, port->number);
+	dbg("%s- port %d", __func__, port->number);
 
 	mos7720_port = usb_get_serial_port_data(port);
 
···
 		return;
 	}
 
-	dbg("%s\n", "setting termios - ASPIRE");
+	dbg("setting termios - ASPIRE");
 
 	cflag = tty->termios->c_cflag;
 
···
 	change_port_settings(tty, mos7720_port, old_termios);
 
 	if (!port->read_urb) {
-		dbg("%s", "URB KILLED !!!!!\n");
+		dbg("URB KILLED !!!!!");
 		return;
 	}
 
···
 	struct usb_device *dev;
 	int i;
 	char data;
+	u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
 
 	dbg("%s: Entering ..........", __func__);
 
···
 
 	usb_set_serial_data(serial, mos7720_serial);
 
+	/*
+	 * The 7715 uses the first bulk in/out endpoint pair for the parallel
+	 * port, and the second for the serial port.  Because the usbserial core
+	 * assumes both pairs are serial ports, we must engage in a bit of
+	 * subterfuge and swap the pointers for ports 0 and 1 in order to make
+	 * port 0 point to the serial port.  However, both moschip devices use a
+	 * single interrupt-in endpoint for both ports (as mentioned a little
+	 * further down), and this endpoint was assigned to port 0.  So after
+	 * the swap, we must copy the interrupt endpoint elements from port 1
+	 * (as newly assigned) to port 0, and null out port 1 pointers.
+	 */
+	if (product == MOSCHIP_DEVICE_ID_7715) {
+		struct usb_serial_port *tmp = serial->port[0];
+		serial->port[0] = serial->port[1];
+		serial->port[1] = tmp;
+		serial->port[0]->interrupt_in_urb = tmp->interrupt_in_urb;
+		serial->port[0]->interrupt_in_buffer = tmp->interrupt_in_buffer;
+		serial->port[0]->interrupt_in_endpointAddress =
+			tmp->interrupt_in_endpointAddress;
+		serial->port[1]->interrupt_in_urb = NULL;
+		serial->port[1]->interrupt_in_buffer = NULL;
+	}
+
 	/* we set up the pointers to the endpoints in the mos7720_open *
 	 * function, as the structures aren't created yet.             */
 
···
 
 		/* Initialize all port interrupt end point to port 0 int
 		 * endpoint.  Our device has only one interrupt endpoint
-		 * comman to all ports */
+		 * common to all ports */
 		serial->port[i]->interrupt_in_endpointAddress =
 				serial->port[0]->interrupt_in_endpointAddress;
 
···
 	.description		= "Moschip 2 port adapter",
 	.usb_driver		= &usb_driver,
 	.id_table		= moschip_port_id_table,
-	.num_ports		= 2,
+	.calc_num_ports		= mos77xx_calc_num_ports,
 	.open			= mos7720_open,
 	.close			= mos7720_close,
 	.throttle		= mos7720_throttle,
 	.unthrottle		= mos7720_unthrottle,
+	.probe			= mos77xx_probe,
 	.attach			= mos7720_startup,
 	.release		= mos7720_release,
 	.ioctl			= mos7720_ioctl,
···
 	.chars_in_buffer	= mos7720_chars_in_buffer,
 	.break_ctl		= mos7720_break,
 	.read_bulk_callback	= mos7720_bulk_in_callback,
-	.read_int_callback	= mos7720_interrupt_callback,
+	.read_int_callback	= NULL  /* dynamically assigned in probe() */
 };
 
 static int __init moschip7720_init(void)

drivers/usb/serial/mos7840.c

···
 #define URB_TRANSFER_BUFFER_SIZE        32	/* URB Size  */
 
 
-static struct usb_device_id moschip_port_id_table[] = {
+static const struct usb_device_id moschip_port_id_table[] = {
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)},
···
 	{}			/* terminating entry */
 };
 
-static __devinitdata struct usb_device_id moschip_id_table_combined[] = {
+static const struct usb_device_id moschip_id_table_combined[] __devinitconst = {
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)},
···
 {
 	struct usb_device *dev = port->serial->dev;
 	int ret = 0;
+	u8 *buf;
+
+	buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
 
 	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
-			      MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH,
+			      MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH,
 			      MOS_WDR_TIMEOUT);
+	*val = buf[0];
 	dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val);
-	*val = (*val) & 0x00ff;
+
+	kfree(buf);
 	return ret;
 }
 
···
 	struct usb_device *dev = port->serial->dev;
 	int ret = 0;
 	__u16 Wval;
+	u8 *buf;
+
+	buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
 
 	/* dbg("application number is %4x",
 	    (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */
···
 		}
 	}
 	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
-			      MCS_RD_RTYPE, Wval, reg, val, VENDOR_READ_LENGTH,
+			      MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH,
 			      MOS_WDR_TIMEOUT);
-	*val = (*val) & 0x00ff;
+	*val = buf[0];
+
+	kfree(buf);
 	return ret;
 }
 
···
 	if (urb->actual_length) {
 		tty = tty_port_tty_get(&mos7840_port->port->port);
 		if (tty) {
-			tty_buffer_request_room(tty, urb->actual_length);
 			tty_insert_flip_string(tty, data, urb->actual_length);
 			dbg(" %s ", data);
 			tty_flip_buffer_push(tty);

drivers/usb/serial/moto_modem.c

···
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x05c6, 0x3197) },	/* unknown Motorola phone */
 	{ USB_DEVICE(0x0c44, 0x0022) },	/* unknown Mororola phone */
 	{ USB_DEVICE(0x22b8, 0x2a64) },	/* Motorola KRZR K1m */

drivers/usb/serial/navman.c

···
 
 static int debug;
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x0a99, 0x0001) },	/* Talon Technology device */
 	{ },
 };
···
 
 	tty = tty_port_tty_get(&port->port);
 	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length);
 		tty_insert_flip_string(tty, data, urb->actual_length);
 		tty_flip_buffer_push(tty);
 	}

drivers/usb/serial/omninet.c

···
 static void omninet_release(struct usb_serial *serial);
 static int omninet_attach(struct usb_serial *serial);
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
 	{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
 	{ }						/* Terminating entry */
···
 
 	if (debug && header->oh_xxx != 0x30) {
 		if (urb->actual_length) {
-			printk(KERN_DEBUG __FILE__
-					": omninet_read %d: ", header->oh_len);
+			printk(KERN_DEBUG "%s: omninet_read %d: ",
+			       __FILE__, header->oh_len);
 			for (i = 0; i < (header->oh_len +
 						OMNINET_HEADERLEN); i++)
 				printk("%.2x ", data[i]);
···
 	struct usb_serial_port 	*port   =  urb->context;
 	int status = urb->status;
 
-	dbg("%s - port %0x\n", __func__, port->number);
+	dbg("%s - port %0x", __func__, port->number);
 
 	port->write_urb_busy = 0;
 	if (status) {

drivers/usb/serial/opticon.c

···
 
 static int debug;
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x065a, 0x0009) },
 	{ },
 };
···
 	int status = urb->status;
 	struct tty_struct *tty;
 	int result;
-	int available_room = 0;
 	int data_length;
 
 	dbg("%s - port %d", __func__, port->number);
···
 			/* real data, send it to the tty layer */
 			tty = tty_port_tty_get(&port->port);
 			if (tty) {
-				available_room = tty_buffer_request_room(tty,
-								data_length);
-				if (available_room) {
-					tty_insert_flip_string(tty, data,
-							       available_room);
-					tty_flip_buffer_push(tty);
-				}
+				tty_insert_flip_string(tty, data,
+							       data_length);
+				tty_flip_buffer_push(tty);
 				tty_kref_put(tty);
 			}
 		} else {
···
 	spin_lock_irqsave(&priv->lock, flags);
 	if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
 		spin_unlock_irqrestore(&priv->lock, flags);
-		dbg("%s - write limit hit\n", __func__);
+		dbg("%s - write limit hit", __func__);
 		return 0;
 	}
 	priv->outstanding_urbs++;
···
 	spin_lock_irqsave(&priv->lock, flags);
 	if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
 		spin_unlock_irqrestore(&priv->lock, flags);
-		dbg("%s - write limit hit\n", __func__);
+		dbg("%s - write limit hit", __func__);
 		return 0;
 	}
 	spin_unlock_irqrestore(&priv->lock, flags);

drivers/usb/serial/option.c

···
 #define AIRPLUS_VENDOR_ID			0x1011
 #define AIRPLUS_PRODUCT_MCD650			0x3198
 
+/* Longcheer/Longsung vendor ID; makes whitelabel devices that
+ * many other vendors like 4G Systems, Alcatel, ChinaBird,
+ * Mobidata, etc sell under their own brand names.
+ */
+#define LONGCHEER_VENDOR_ID			0x1c9e
+
 /* 4G Systems products */
-#define FOUR_G_SYSTEMS_VENDOR_ID		0x1c9e
+/* This is the 4G XS Stick W14 a.k.a. Mobilcom Debitel Surf-Stick *
+ * It seems to contain a Qualcomm QSC6240/6290 chipset            */
 #define FOUR_G_SYSTEMS_PRODUCT_W14		0x9603
 
 /* Haier products */
 #define HAIER_VENDOR_ID				0x201e
 #define HAIER_PRODUCT_CE100			0x2009
 
-static struct usb_device_id option_ids[] = {
+/* some devices interfaces need special handling due to a number of reasons */
+enum option_blacklist_reason {
+		OPTION_BLACKLIST_NONE = 0,
+		OPTION_BLACKLIST_SENDSETUP = 1,
+		OPTION_BLACKLIST_RESERVED_IF = 2
+};
+
+struct option_blacklist_info {
+	const u32 infolen;	/* number of interface numbers on blacklist */
+	const u8  *ifaceinfo;	/* pointer to the array holding the numbers */
+	enum option_blacklist_reason reason;
+};
+
+static const u8 four_g_w14_no_sendsetup[] = { 0, 1 };
+static const struct option_blacklist_info four_g_w14_blacklist = {
+	.infolen = ARRAY_SIZE(four_g_w14_no_sendsetup),
+	.ifaceinfo = four_g_w14_no_sendsetup,
+	.reason = OPTION_BLACKLIST_SENDSETUP
+};
+
+static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
···
 	{ USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S) },
 	{ USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) },
 	{ USB_DEVICE(TLAYTECH_VENDOR_ID, TLAYTECH_PRODUCT_TEU800) },
-	{ USB_DEVICE(FOUR_G_SYSTEMS_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14) },
+	{ USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14),
+  	  .driver_info = (kernel_ulong_t)&four_g_w14_blacklist
+  	},
 	{ USB_DEVICE(HAIER_VENDOR_ID, HAIER_PRODUCT_CE100) },
 	{ } /* Terminating entry */
 };
···
 	spinlock_t susp_lock;
 	unsigned int suspended:1;
 	int in_flight;
+	struct option_blacklist_info *blacklist_info;
 };
 
 struct option_port_private {
···
 	if (!data)
 		return -ENOMEM;
 	spin_lock_init(&data->susp_lock);
+	data->blacklist_info = (struct option_blacklist_info*) id->driver_info;
 	return 0;
+}
+
+static enum option_blacklist_reason is_blacklisted(const u8 ifnum,
+				const struct option_blacklist_info *blacklist)
+{
+	const u8  *info;
+	int i;
+
+	if (blacklist) {
+		info = blacklist->ifaceinfo;
+
+		for (i = 0; i < blacklist->infolen; i++) {
+			if (info[i] == ifnum)
+				return blacklist->reason;
+		}
+	}
+	return OPTION_BLACKLIST_NONE;
 }
 
 static void option_set_termios(struct tty_struct *tty,
···
 	} else {
 		tty = tty_port_tty_get(&port->port);
 		if (urb->actual_length) {
-			tty_buffer_request_room(tty, urb->actual_length);
 			tty_insert_flip_string(tty, data, urb->actual_length);
 			tty_flip_buffer_push(tty);
 		} else 
···
 		tty_kref_put(tty);
 
 		/* Resubmit urb so we continue receiving */
-		if (port->port.count && status != -ESHUTDOWN) {
+		if (status != -ESHUTDOWN) {
 			err = usb_submit_urb(urb, GFP_ATOMIC);
-			if (err)
+			if (err && err != -EPERM)
 				printk(KERN_ERR "%s: resubmit read urb failed. "
 					"(%d)", __func__, err);
 			else
···
 				(struct usb_ctrlrequest *)urb->transfer_buffer;
 
 		if (!req_pkt) {
-			dbg("%s: NULL req_pkt\n", __func__);
+			dbg("%s: NULL req_pkt", __func__);
 			return;
 		}
 		if ((req_pkt->bRequestType == 0xA1) &&
···
 static int option_send_setup(struct usb_serial_port *port)
 {
 	struct usb_serial *serial = port->serial;
+	struct option_intf_private *intfdata =
+		(struct option_intf_private *) serial->private;
 	struct option_port_private *portdata;
 	int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
 	int val = 0;
 	dbg("%s", __func__);
+
+	if (is_blacklisted(ifNum, intfdata->blacklist_info) ==
+						OPTION_BLACKLIST_SENDSETUP) {
+		dbg("No send_setup on blacklisted interface #%d\n", ifNum);
+		return -EIO;
+	}
 
 	portdata = usb_get_serial_port_data(port);
 
···
 	for (i = 0; i < serial->num_ports; i++) {
 		port = serial->port[i];
 		if (!port->interrupt_in_urb) {
-			dbg("%s: No interrupt URB for port %d\n", __func__, i);
+			dbg("%s: No interrupt URB for port %d", __func__, i);
 			continue;
 		}
 		err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);

drivers/usb/serial/oti6858.c

···
 #define OTI6858_AUTHOR "Tomasz Michal Lukaszewski <FIXME@FIXME>"
 #define OTI6858_VERSION "0.1"
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(OTI6858_VENDOR_ID, OTI6858_PRODUCT_ID) },
 	{ }
 };
···
 	struct usb_serial_port *port = priv->port;
 	int count = 0, result;
 	unsigned long flags;
-	unsigned char allow;
+	u8 *allow;
 
 	dbg("%s(port = %d)", __func__, port->number);
 
···
 		count = port->bulk_out_size;
 
 	if (count != 0) {
+		allow = kmalloc(1, GFP_KERNEL);
+		if (!allow) {
+			dev_err(&port->dev, "%s(): kmalloc failed\n",
+					__func__);
+			return;
+		}
 		result = usb_control_msg(port->serial->dev,
 				usb_rcvctrlpipe(port->serial->dev, 0),
 				OTI6858_REQ_T_CHECK_TXBUFF,
 				OTI6858_REQ_CHECK_TXBUFF,
-				count, 0, &allow, 1, 100);
-		if (result != 1 || allow != 0)
+				count, 0, allow, 1, 100);
+		if (result != 1 || *allow != 0)
 			count = 0;
+		kfree(allow);
 	}
 
 	if (count == 0) {
···
 
 	usb_clear_halt(serial->dev, port->write_urb->pipe);
 	usb_clear_halt(serial->dev, port->read_urb->pipe);
-
-	if (port->port.count != 1)
-		return 0;
 
 	buf = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL);
 	if (buf == NULL) {
···
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	if (status != 0) {
-		if (!port->port.count) {
-			dbg("%s(): port is closed, exiting", __func__);
-			return;
-		}
 		/*
 		if (status == -EPROTO) {
 			* PL2303 mysteriously fails with -EPROTO reschedule
···
 	}
 	tty_kref_put(tty);
 
-	/* schedule the interrupt urb if we are still open */
-	if (port->port.count != 0) {
-		port->interrupt_in_urb->dev = port->serial->dev;
-		result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
-		if (result != 0) {
-			dev_err(&port->dev, "%s(): usb_submit_urb() failed,"
-					" error %d\n", __func__, result);
-		}
+	/* schedule the interrupt urb */
+	port->interrupt_in_urb->dev = port->serial->dev;
+	result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
+	if (result != 0 && result != -EPERM) {
+		dev_err(&port->dev, "%s(): usb_submit_urb() failed,"
+				" error %d\n", __func__, result);
 	}
 }
 

drivers/usb/serial/pl2303.c

···
 	char		*buf_put;
 };
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) },
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) },
···
 			      port->write_urb->transfer_buffer);
 
 	port->write_urb->transfer_buffer_length = count;
-	port->write_urb->dev = port->serial->dev;
 	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 	if (result) {
 		dev_err(&port->dev, "%s - failed submitting write urb,"
···
 		pl2303_set_termios(tty, port, &tmp_termios);
 
 	dbg("%s - submitting read urb", __func__);
-	port->read_urb->dev = serial->dev;
 	result = usb_submit_urb(port->read_urb, GFP_KERNEL);
 	if (result) {
 		dev_err(&port->dev, "%s - failed submitting read urb,"
···
 	}
 
 	dbg("%s - submitting interrupt urb", __func__);
-	port->interrupt_in_urb->dev = serial->dev;
 	result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 	if (result) {
 		dev_err(&port->dev, "%s - failed submitting interrupt urb,"
···
 static int pl2303_ioctl(struct tty_struct *tty, struct file *file,
 			unsigned int cmd, unsigned long arg)
 {
+	struct serial_struct ser;
 	struct usb_serial_port *port = tty->driver_data;
 	dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
 
 	switch (cmd) {
+	case TIOCGSERIAL:
+		memset(&ser, 0, sizeof ser);
+		ser.type = PORT_16654;
+		ser.line = port->serial->minor;
+		ser.port = port->number;
+		ser.baud_base = 460800;
+
+		if (copy_to_user((void __user *)arg, &ser, sizeof ser))
+			return -EFAULT;
+
+		return 0;
+
 	case TIOCMIWAIT:
 		dbg("%s (%d) TIOCMIWAIT", __func__,  port->number);
 		return wait_modem_info(port, arg);
···
 		tty_flag = TTY_FRAME;
 	dbg("%s - tty_flag = %d", __func__, tty_flag);
 
-	tty_buffer_request_room(tty, urb->actual_length + 1);
 	/* overrun is special, not associated with a char */
 	if (line_status & UART_OVERRUN_ERROR)
 		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
···
 
 	if (status) {
 		dbg("%s - urb status = %d", __func__, status);
-		if (!port->port.count) {
-			dbg("%s - port is closed, exiting.", __func__);
-			return;
-		}
 		if (status == -EPROTO) {
 			/* PL2303 mysteriously fails with -EPROTO reschedule
 			 * the read */
 			dbg("%s - caught -EPROTO, resubmitting the urb",
 			    __func__);
-			urb->dev = port->serial->dev;
 			result = usb_submit_urb(urb, GFP_ATOMIC);
 			if (result)
 				dev_err(&urb->dev->dev, "%s - failed"
···
 	}
 	tty_kref_put(tty);
 	/* Schedule the next read _if_ we are still open */
-	if (port->port.count) {
-		urb->dev = port->serial->dev;
-		result = usb_submit_urb(urb, GFP_ATOMIC);
-		if (result)
-			dev_err(&urb->dev->dev, "%s - failed resubmitting"
-				" read urb, error %d\n", __func__, result);
-	}
-
-	return;
+	result = usb_submit_urb(urb, GFP_ATOMIC);
+	if (result && result != -EPERM)
+		dev_err(&urb->dev->dev, "%s - failed resubmitting"
+			" read urb, error %d\n", __func__, result);
 }
 
 static void pl2303_write_bulk_callback(struct urb *urb)
···
 		dbg("%s - nonzero write bulk status received: %d", __func__,
 		    status);
 		port->write_urb->transfer_buffer_length = 1;
-		port->write_urb->dev = port->serial->dev;
 		result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
 		if (result)
 			dev_err(&urb->dev->dev, "%s - failed resubmitting write"

drivers/usb/serial/qcaux.c

···
+/*
+ * Qualcomm USB Auxiliary Serial Port driver
+ *
+ * Copyright (C) 2008 Greg Kroah-Hartman <[e-mail]>
+ * Copyright (C) 2010 Dan Williams <[e-mail]>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ * Devices listed here usually provide a CDC ACM port on which normal modem
+ * AT commands and PPP can be used.  But when that port is in-use by PPP it
+ * cannot be used simultaneously for status or signal strength.  Instead, the
+ * ports here can be queried for that information using the Qualcomm DM
+ * protocol.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+/* NOTE: for now, only use this driver for devices that provide a CDC-ACM port
+ * for normal AT commands, but also provide secondary USB interfaces for the
+ * QCDM-capable ports.  Devices that do not provide a CDC-ACM port should
+ * probably be driven by option.ko.
+ */
+
+/* UTStarcom/Pantech/Curitel devices */
+#define UTSTARCOM_VENDOR_ID			0x106c
+#define UTSTARCOM_PRODUCT_PC5740		0x3701
+#define UTSTARCOM_PRODUCT_PC5750		0x3702 /* aka Pantech PX-500 */
+#define UTSTARCOM_PRODUCT_UM150			0x3711
+#define UTSTARCOM_PRODUCT_UM175_V1		0x3712
+#define UTSTARCOM_PRODUCT_UM175_V2		0x3714
+#define UTSTARCOM_PRODUCT_UM175_ALLTEL		0x3715
+
+/* CMOTECH devices */
+#define CMOTECH_VENDOR_ID			0x16d8
+#define CMOTECH_PRODUCT_CDU550			0x5553
+#define CMOTECH_PRODUCT_CDX650			0x6512
+
+static struct usb_device_id id_table[] = {
+	{ USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_PC5740, 0xff, 0x00, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_PC5750, 0xff, 0x00, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_UM150, 0xff, 0x00, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_UM175_V1, 0xff, 0x00, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_UM175_V2, 0xff, 0x00, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, UTSTARCOM_PRODUCT_UM175_ALLTEL, 0xff, 0x00, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDU550, 0xff, 0xff, 0x00) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDX650, 0xff, 0xff, 0x00) },
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver qcaux_driver = {
+	.name =		"qcaux",
+	.probe =	usb_serial_probe,
+	.disconnect =	usb_serial_disconnect,
+	.id_table =	id_table,
+	.no_dynamic_id = 	1,
+};
+
+static struct usb_serial_driver qcaux_device = {
+	.driver = {
+		.owner =	THIS_MODULE,
+		.name =		"qcaux",
+	},
+	.id_table =		id_table,
+	.num_ports =		1,
+};
+
+static int __init qcaux_init(void)
+{
+	int retval;
+
+	retval = usb_serial_register(&qcaux_device);
+	if (retval)
+		return retval;
+	retval = usb_register(&qcaux_driver);
+	if (retval)
+		usb_serial_deregister(&qcaux_device);
+	return retval;
+}
+
+static void __exit qcaux_exit(void)
+{
+	usb_deregister(&qcaux_driver);
+	usb_serial_deregister(&qcaux_device);
+}
+
+module_init(qcaux_init);
+module_exit(qcaux_exit);
+MODULE_LICENSE("GPL");

drivers/usb/serial/qcserial.c

···
 
 static int debug;
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{USB_DEVICE(0x05c6, 0x9211)},	/* Acer Gobi QDL device */
 	{USB_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
 	{USB_DEVICE(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */

drivers/usb/serial/siemens_mpi.c

···
 #define DRIVER_DESC "Driver for Siemens USB/MPI adapter"
 
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	/* Vendor and product id for 6ES7-972-0CB20-0XA0 */
 	{ USB_DEVICE(0x908, 0x0004) },
 	{ },

drivers/usb/serial/sierra.c

···
 	.ifaceinfo = direct_ip_non_serial_ifaces,
 };
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
 	{ USB_DEVICE(0x03F0, 0x1B1D) },	/* HP ev2200 a.k.a MC5720 */
 	{ USB_DEVICE(0x03F0, 0x1E1D) },	/* HP hs2300 a.k.a MC8775 */
···
 };
 MODULE_DEVICE_TABLE(usb, id_table);
 
-static struct usb_driver sierra_driver = {
-	.name       = "sierra",
-	.probe      = usb_serial_probe,
-	.disconnect = usb_serial_disconnect,
-	.suspend    = usb_serial_suspend,
-	.resume     = usb_serial_resume,
-	.id_table   = id_table,
-	.no_dynamic_id = 	1,
-	.supports_autosuspend =	1,
-};
 
 struct sierra_port_private {
 	spinlock_t lock;	/* lock the structure */
···
 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
 					const unsigned char *buf, int count)
 {
-	struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+	struct sierra_port_private *portdata;
 	struct sierra_intf_private *intfdata;
 	struct usb_serial *serial = port->serial;
 	unsigned long flags;
···
 	} else {
 		if (urb->actual_length) {
 			tty = tty_port_tty_get(&port->port);
+			if (tty) {
+				tty_insert_flip_string(tty, data,
+					urb->actual_length);
+				tty_flip_buffer_push(tty);
 
-			tty_buffer_request_room(tty, urb->actual_length);
-			tty_insert_flip_string(tty, data, urb->actual_length);
-			tty_flip_buffer_push(tty);
-
-			tty_kref_put(tty);
-			usb_serial_debug_data(debug, &port->dev, __func__,
-				urb->actual_length, data);
+				tty_kref_put(tty);
+				usb_serial_debug_data(debug, &port->dev,
+					__func__, urb->actual_length, data);
+			}
 		} else {
 			dev_dbg(&port->dev, "%s: empty read urb"
 				" received\n", __func__);
···
 	}
 
 	/* Resubmit urb so we continue receiving */
-	if (port->port.count && status != -ESHUTDOWN && status != -EPERM) {
+	if (status != -ESHUTDOWN && status != -EPERM) {
 		usb_mark_last_busy(port->serial->dev);
 		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (err)
+		if (err && err != -EPERM)
 			dev_err(&port->dev, "resubmit read urb failed."
 				"(%d)\n", err);
 	}
···
 		dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
 
 	/* Resubmit urb so we continue receiving IRQ data */
-	if (port->port.count && status != -ESHUTDOWN && status != -ENOENT) {
+	if (status != -ESHUTDOWN && status != -ENOENT) {
 		usb_mark_last_busy(serial->dev);
 		urb->dev = serial->dev;
 		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (err)
+		if (err && err != -EPERM)
 			dev_err(&port->dev, "%s: resubmit intr urb "
 				"failed. (%d)\n", __func__, err);
 	}
···
 
 	return ec ? -EIO : 0;
 }
+
+static int sierra_reset_resume(struct usb_interface *intf)
+{
+	struct usb_serial *serial = usb_get_intfdata(intf);
+	dev_err(&serial->dev->dev, "%s\n", __func__);
+	return usb_serial_resume(intf);
+}
 #else
 #define sierra_suspend NULL
 #define sierra_resume NULL
+#define sierra_reset_resume NULL
 #endif
+
+static struct usb_driver sierra_driver = {
+	.name       = "sierra",
+	.probe      = usb_serial_probe,
+	.disconnect = usb_serial_disconnect,
+	.suspend    = usb_serial_suspend,
+	.resume     = usb_serial_resume,
+	.reset_resume = sierra_reset_resume,
+	.id_table   = id_table,
+	.no_dynamic_id = 	1,
+	.supports_autosuspend =	1,
+};
 
 static struct usb_serial_driver sierra_device = {
 	.driver = {

drivers/usb/serial/spcp8x5.c

···
 #define SPCP8x5_835_VID		0x04fc
 #define SPCP8x5_835_PID		0x0231
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
 	{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
 	{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
···
 	if (i < 0)
 		dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
 			uartdata, i);
-	dbg("0x21:0x40:0:0  %d\n", i);
+	dbg("0x21:0x40:0:0  %d", i);
 
 	if (cflag & CRTSCTS) {
 		/* enable hardware flow control */
···
 	struct tty_struct *tty;
 	unsigned char *data = urb->transfer_buffer;
 	unsigned long flags;
-	int i;
 	int result = urb->status;
 	u8 status;
 	char tty_flag;
···
 
 	/* check the urb status */
 	if (result) {
-		if (!port->port.count)
-			return;
 		if (result == -EPROTO) {
 			/* spcp8x5 mysteriously fails with -EPROTO */
 			/* reschedule the read */
···
 
 	tty = tty_port_tty_get(&port->port);
 	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length + 1);
 		/* overrun is special, not associated with a char */
 		if (status & UART_OVERRUN_ERROR)
 			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		for (i = 0; i < urb->actual_length; ++i)
-			tty_insert_flip_char(tty, data[i], tty_flag);
+		tty_insert_flip_string_fixed_flag(tty, data,
+						urb->actual_length, tty_flag);
 		tty_flip_buffer_push(tty);
 	}
 	tty_kref_put(tty);
 
-	/* Schedule the next read _if_ we are still open */
-	if (port->port.count) {
-		urb->dev = port->serial->dev;
-		result = usb_submit_urb(urb , GFP_ATOMIC);
-		if (result)
-			dev_dbg(&port->dev, "failed submitting read urb %d\n",
-				result);
-	}
-
-	return;
+	/* Schedule the next read */
+	urb->dev = port->serial->dev;
+	result = usb_submit_urb(urb , GFP_ATOMIC);
+	if (result)
+		dev_dbg(&port->dev, "failed submitting read urb %d\n", result);
 }
 
 /* get data from ring buffer and then write to usb bus */

drivers/usb/serial/symbolserial.c

···
 
 static int debug;
 
-static struct usb_device_id id_table[] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x05e0, 0x0600) },
 	{ },
 };
···
 	int status = urb->status;
 	struct tty_struct *tty;
 	int result;
-	int available_room = 0;
 	int data_length;
 
 	dbg("%s - port %d", __func__, port->number);
···
 		 */
 		tty = tty_port_tty_get(&port->port);
 		if (tty) {
-			available_room = tty_buffer_request_room(tty,
-							data_length);
-			if (available_room) {
-				tty_insert_flip_string(tty, &data[1],
-						       available_room);
-				tty_flip_buffer_push(tty);
-			}
+			tty_insert_flip_string(tty, &data[1], data_length);
+			tty_flip_buffer_push(tty);
 			tty_kref_put(tty);
 		}
 	} else {

drivers/usb/serial/ti_usb_3410_5052.c

···
 	int cnt;
 
 	do {
-		cnt = tty_buffer_request_room(tty, length);
+		cnt = tty_insert_flip_string(tty, data, length);
 		if (cnt < length) {
 			dev_err(dev, "%s - dropping data, %d bytes lost\n",
 						__func__, length - cnt);
 			if (cnt == 0)
 				break;
 		}
-		tty_insert_flip_string(tty, data, cnt);
 		tty_flip_buffer_push(tty);
 		data += cnt;
 		length -= cnt;

drivers/usb/serial/usb-serial.c

···
 
 	dbg("%s - port %d, %d byte(s)", __func__, port->number, count);
 
-	/* count is managed under the mutex lock for the tty so cannot
-	   drop to zero until after the last close completes */
-	WARN_ON(!port->port.count);
-
 	/* pass on to the driver specific version of this function */
 	retval = port->serial->type->write(tty, port, buf, count);
 
···
 {
 	struct usb_serial_port *port = tty->driver_data;
 	dbg("%s - port %d", __func__, port->number);
-	WARN_ON(!port->port.count);
 	/* pass on to the driver specific version of this function */
 	return port->serial->type->write_room(tty);
 }
···
 static int serial_chars_in_buffer(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	dbg("%s = port %d", __func__, port->number);
+	dbg("%s - port %d", __func__, port->number);
 
 	/* if the device was unplugged then any remaining characters
 	   fell out of the connector ;) */
···
 	struct usb_serial_port *port = tty->driver_data;
 	dbg("%s - port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	/* pass on to the driver specific version of this function */
 	if (port->serial->type->throttle)
 		port->serial->type->throttle(tty);
···
 	struct usb_serial_port *port = tty->driver_data;
 	dbg("%s - port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	/* pass on to the driver specific version of this function */
 	if (port->serial->type->unthrottle)
 		port->serial->type->unthrottle(tty);
···
 	int retval = -ENODEV;
 
 	dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd);
-
-	WARN_ON(!port->port.count);
 
 	/* pass on to the driver specific version of this function
 	   if it is available */
···
 	struct usb_serial_port *port = tty->driver_data;
 	dbg("%s - port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	/* pass on to the driver specific version of this function
 	   if it is available */
 	if (port->serial->type->set_termios)
···
 
 	dbg("%s - port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	/* pass on to the driver specific version of this function
 	   if it is available */
 	if (port->serial->type->break_ctl)
···
 
 	dbg("%s - port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	if (port->serial->type->tiocmget)
 		return port->serial->type->tiocmget(tty, file);
 	return -EINVAL;
···
 
 	dbg("%s - port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	if (port->serial->type->tiocmset)
 		return port->serial->type->tiocmset(tty, file, set, clear);
 	return -EINVAL;

drivers/usb/serial/usb_debug.c

···
 	0xff,
 };
 
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x0525, 0x127a) },
 	{ },
 };

drivers/usb/serial/visor.c

···
 	spin_lock_irqsave(&priv->lock, flags);
 	if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
 		spin_unlock_irqrestore(&priv->lock, flags);
-		dbg("%s - write limit hit\n", __func__);
+		dbg("%s - write limit hit", __func__);
 		return 0;
 	}
 	priv->outstanding_urbs++;
···
 	spin_lock_irqsave(&priv->lock, flags);
 	if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
 		spin_unlock_irqrestore(&priv->lock, flags);
-		dbg("%s - write limit hit\n", __func__);
+		dbg("%s - write limit hit", __func__);
 		return 0;
 	}
 	spin_unlock_irqrestore(&priv->lock, flags);
···
 	if (urb->actual_length) {
 		tty = tty_port_tty_get(&port->port);
 		if (tty) {
-			available_room = tty_buffer_request_room(tty,
-							urb->actual_length);
-			if (available_room) {
-				tty_insert_flip_string(tty, data,
-							available_room);
-				tty_flip_buffer_push(tty);
-			}
+			tty_insert_flip_string(tty, data,
+						urb->actual_length);
+			tty_flip_buffer_push(tty);
 			tty_kref_put(tty);
 		}
 		spin_lock(&priv->lock);
···
 {
 	struct device *dev = &serial->dev->dev;
 	int result;
-	u8 data;
+	u8 *data;
 
 	dbg("%s", __func__);
+
+	data = kmalloc(1, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
 
 	/*
 	 * Note that PEG-300 series devices expect the following two calls.
···
 	/* get the config number */
 	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 				  USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
-				  0, 0, &data, 1, 3000);
+				  0, 0, data, 1, 3000);
 	if (result < 0) {
 		dev_err(dev, "%s: get config number failed: %d\n",
 							__func__, result);
-		return result;
+		goto out;
 	}
 	if (result != 1) {
 		dev_err(dev, "%s: get config number bad return length: %d\n",
 							__func__, result);
-		return -EIO;
+		result = -EIO;
+		goto out;
 	}
 
 	/* get the interface number */
 	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 				  USB_REQ_GET_INTERFACE,
 				  USB_DIR_IN | USB_RECIP_INTERFACE,
-				  0, 0, &data, 1, 3000);
+				  0, 0, data, 1, 3000);
 	if (result < 0) {
 		dev_err(dev, "%s: get interface number failed: %d\n",
 							__func__, result);
-		return result;
+		goto out;
 	}
 	if (result != 1) {
 		dev_err(dev,
 			"%s: get interface number bad return length: %d\n",
 							__func__, result);
-		return -EIO;
+		result = -EIO;
+		goto out;
 	}
 
-	return generic_startup(serial);
+	result = generic_startup(serial);
+out:
+	kfree(data);
+
+	return result;
 }
 
 static int treo_attach(struct usb_serial *serial)

drivers/usb/serial/vivopay-serial.c

···
+/*
+ * Copyright (C) 2001-2005 Greg Kroah-Hartman ([e-mail])
+ * Copyright (C) 2009 Outpost Embedded, LLC
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+
+#define DRIVER_VERSION "v1.0"
+#define DRIVER_DESC "ViVOpay USB Serial Driver"
+
+#define VIVOPAY_VENDOR_ID 0x1d5f
+
+
+static struct usb_device_id id_table [] = {
+	/* ViVOpay 8800 */
+	{ USB_DEVICE(VIVOPAY_VENDOR_ID, 0x1004) },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver vivopay_serial_driver = {
+	.name =			"vivopay-serial",
+	.probe =		usb_serial_probe,
+	.disconnect =		usb_serial_disconnect,
+	.id_table =		id_table,
+	.no_dynamic_id =	1,
+};
+
+static struct usb_serial_driver vivopay_serial_device = {
+	.driver = {
+		.owner =	THIS_MODULE,
+		.name =		"vivopay-serial",
+	},
+	.id_table =		id_table,
+	.usb_driver =		&vivopay_serial_driver,
+	.num_ports =		1,
+};
+
+static int __init vivopay_serial_init(void)
+{
+	int retval;
+	retval = usb_serial_register(&vivopay_serial_device);
+	if (retval)
+		goto failed_usb_serial_register;
+	retval = usb_register(&vivopay_serial_driver);
+	if (retval)
+		goto failed_usb_register;
+	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+	    DRIVER_DESC "\n");
+	return 0;
+failed_usb_register:
+	usb_serial_deregister(&vivopay_serial_device);
+failed_usb_serial_register:
+	return retval;
+}
+
+static void __exit vivopay_serial_exit(void)
+{
+	usb_deregister(&vivopay_serial_driver);
+	usb_serial_deregister(&vivopay_serial_device);
+}
+
+module_init(vivopay_serial_init);
+module_exit(vivopay_serial_exit);
+
+MODULE_AUTHOR("Forest Bond <[e-mail]>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");

drivers/usb/serial/whiteheat.c

···
    separate ID tables, and then a third table that combines them
    just for the purpose of exporting the autoloading information.
 */
-static struct usb_device_id id_table_std [] = {
+static const struct usb_device_id id_table_std[] = {
 	{ USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_prerenumeration [] = {
+static const struct usb_device_id id_table_prerenumeration[] = {
 	{ USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
 	{ }						/* Terminating entry */
 };
 
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
 	{ USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
 	{ }						/* Terminating entry */
···
 		wrap = list_entry(tmp, struct whiteheat_urb_wrap, list);
 		urb = wrap->urb;
 
-		if (tty && urb->actual_length) {
-			int len = tty_buffer_request_room(tty,
-							urb->actual_length);
-			/* This stuff can go away now I suspect */
-			if (unlikely(len < urb->actual_length)) {
-				spin_lock_irqsave(&info->lock, flags);
-				list_add(tmp, &info->rx_urb_q);
-				spin_unlock_irqrestore(&info->lock, flags);
-				tty_flip_buffer_push(tty);
-				schedule_work(&info->rx_work);
-				goto out;
-			}
-			tty_insert_flip_string(tty, urb->transfer_buffer, len);
-			sent += len;
-		}
+		if (tty && urb->actual_length)
+			sent += tty_insert_flip_string(tty,
+				urb->transfer_buffer, urb->actual_length);
 
 		urb->dev = port->serial->dev;
 		result = usb_submit_urb(urb, GFP_ATOMIC);

drivers/usb/storage/onetouch.c

···
 		goto fail1;
 
 	onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN,
-					  GFP_ATOMIC, &onetouch->data_dma);
+					  GFP_KERNEL, &onetouch->data_dma);
 	if (!onetouch->data)
 		goto fail1;
 

drivers/usb/storage/scsiglue.c

···
 
 		if (us->fflags & US_FL_MAX_SECTORS_MIN)
 			max_sectors = PAGE_CACHE_SIZE >> 9;
-		if (queue_max_sectors(sdev->request_queue) > max_sectors)
+		if (queue_max_hw_sectors(sdev->request_queue) > max_sectors)
 			blk_queue_max_hw_sectors(sdev->request_queue,
 					      max_sectors);
 	} else if (sdev->type == TYPE_TAPE) {
···
 {
 	struct scsi_device *sdev = to_scsi_device(dev);
 
-	return sprintf(buf, "%u\n", queue_max_sectors(sdev->request_queue));
+	return sprintf(buf, "%u\n", queue_max_hw_sectors(sdev->request_queue));
 }
 
 /* Input routine for the sysfs max_sectors file */
···
 	struct scsi_device *sdev = to_scsi_device(dev);
 	unsigned short ms;
 
-	if (sscanf(buf, "%hu", &ms) > 0 && ms <= SCSI_DEFAULT_MAX_SECTORS) {
+	if (sscanf(buf, "%hu", &ms) > 0) {
 		blk_queue_max_hw_sectors(sdev->request_queue, ms);
-		return strlen(buf);
+		return count;
 	}
 	return -EINVAL;	
 }
···
 	.slave_configure =		slave_configure,
 
 	/* lots of sg segments can be handled */
-	.sg_tablesize =			SG_ALL,
+	.sg_tablesize =			SCSI_MAX_SG_CHAIN_SEGMENTS,
 
 	/* limit the total size of a transfer to 120 KB */
 	.max_sectors =                  240,

drivers/usb/storage/shuttle_usbat.c

···
 		return USB_STOR_TRANSPORT_ERROR;
 	}
 
-	if ( (result = usbat_multiple_write(us, 
-			registers, data, 7)) != USB_STOR_TRANSPORT_GOOD) {
+	result = usbat_multiple_write(us, registers, data, 7);
+
+	if (result != USB_STOR_TRANSPORT_GOOD)
 		return result;
-	}
 
 	/*
 	 * Write the 12-byte command header.
···
 	 * AT SPEED 4 IS UNRELIABLE!!!
 	 */
 
-	if ((result = usbat_write_block(us,
-			USBAT_ATA, srb->cmnd, 12,
-				(srb->cmnd[0]==GPCMD_BLANK ? 75 : 10), 0) !=
-			     USB_STOR_TRANSPORT_GOOD)) {
+	result = usbat_write_block(us, USBAT_ATA, srb->cmnd, 12,
+				   srb->cmnd[0] == GPCMD_BLANK ? 75 : 10, 0);
+
+	if (result != USB_STOR_TRANSPORT_GOOD)
 		return result;
-	}
 
 	/* If there is response data to be read in then do it here. */
 

drivers/usb/storage/transport.c

···
 #include <linux/errno.h>
 #include <linux/slab.h>
 
+#include <linux/usb/quirks.h>
+
 #include <scsi/scsi.h>
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_device.h>
···
 int usb_stor_port_reset(struct us_data *us)
 {
 	int result;
+
+	/*for these devices we must use the class specific method */
+	if (us->pusb_dev->quirks & USB_QUIRK_RESET_MORPHS)
+		return -EPERM;
 
 	result = usb_lock_device_for_reset(us->pusb_dev, us->pusb_intf);
 	if (result < 0)

drivers/usb/storage/unusual_devs.h

···
 		0 ),
 
 /* Reported by Jan Dumon <[e-mail]>
- * This device (wrongly) has a vendor-specific device descriptor.
- * The entry is needed so usb-storage can bind to it's mass-storage
+ * These devices (wrongly) have a vendor-specific device descriptor.
+ * These entries are needed so usb-storage can bind to their mass-storage
  * interface as an interface driver */
 UNUSUAL_DEV( 0x0af0, 0x7501, 0x0000, 0x0000,
 		"Option",
 		"GI 0431 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x7701, 0x0000, 0x0000,
+		"Option",
+		"GI 0451 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x7706, 0x0000, 0x0000,
+		"Option",
+		"GI 0451 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x7901, 0x0000, 0x0000,
+		"Option",
+		"GI 0452 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x7A01, 0x0000, 0x0000,
+		"Option",
+		"GI 0461 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x7A05, 0x0000, 0x0000,
+		"Option",
+		"GI 0461 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x8300, 0x0000, 0x0000,
+		"Option",
+		"GI 033x SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x8302, 0x0000, 0x0000,
+		"Option",
+		"GI 033x SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0x8304, 0x0000, 0x0000,
+		"Option",
+		"GI 033x SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0xc100, 0x0000, 0x0000,
+		"Option",
+		"GI 070x SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0xd057, 0x0000, 0x0000,
+		"Option",
+		"GI 1505 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0xd058, 0x0000, 0x0000,
+		"Option",
+		"GI 1509 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0xd157, 0x0000, 0x0000,
+		"Option",
+		"GI 1515 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0xd257, 0x0000, 0x0000,
+		"Option",
+		"GI 1215 SD-Card",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		0 ),
+
+UNUSUAL_DEV( 0x0af0, 0xd357, 0x0000, 0x0000,
+		"Option",
+		"GI 1505 SD-Card",
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
 		0 ),
 

drivers/usb/usb-skeleton.c

···
 #define USB_SKEL_PRODUCT_ID	0xfff0
 
 /* table of devices that work with this driver */
-static struct usb_device_id skel_table[] = {
+static const struct usb_device_id skel_table[] = {
 	{ USB_DEVICE(USB_SKEL_VENDOR_ID, USB_SKEL_PRODUCT_ID) },
 	{ }					/* Terminating entry */
 };

drivers/usb/wusbcore/cbaf.c

···
 	kzfree(cbaf);
 }
 
-static struct usb_device_id cbaf_id_table[] = {
+static const struct usb_device_id cbaf_id_table[] = {
 	{ USB_INTERFACE_INFO(0xef, 0x03, 0x01), },
 	{ },
 };

drivers/usb/wusbcore/devconnect.c

···
  * reference that we'll drop.
  *
  * First we need to determine if the device is a WUSB device (else we
- * ignore it). For that we use the speed setting (USB_SPEED_VARIABLE)
+ * ignore it). For that we use the speed setting (USB_SPEED_WIRELESS)
  * [FIXME: maybe we'd need something more definitive]. If so, we track
  * it's usb_busd and from there, the WUSB HC.
  *

drivers/usb/wusbcore/mmc.c

···
 {
 	int result = 0;
 
-	if (memcmp(chid, &wusb_ckhdid_zero, sizeof(chid)) == 0)
+	if (memcmp(chid, &wusb_ckhdid_zero, sizeof(*chid)) == 0)
 		chid = NULL;
 
 	mutex_lock(&wusbhc->mutex);

include/linux/tty_flip.h

···
 #define _LINUX_TTY_FLIP_H
 
 extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
-extern int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size);
 extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
+extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size);
 extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
 extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
 void tty_schedule_flip(struct tty_struct *tty);
···
 		return 1;
 	}
 	return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
+}
+
+static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
+{
+	return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size);
 }
 
 #endif /* _LINUX_TTY_FLIP_H */

include/linux/usb.h

···
  *	number from the USB core by calling usb_register_dev().
  * @condition: binding state of the interface: not bound, binding
  *	(in probe()), bound to a driver, or unbinding (in disconnect())
- * @is_active: flag set when the interface is bound and not suspended.
  * @sysfs_files_created: sysfs attributes exist
  * @ep_devs_created: endpoint child pseudo-devices exist
  * @unregistering: flag set when the interface is being unregistered
···
  * @dev: driver model's view of this device
  * @usb_dev: if an interface is bound to the USB major, this will point
  *	to the sysfs representation for that device.
- * @pm_usage_cnt: PM usage counter for this interface; autosuspend is not
- *	allowed unless the counter is 0.
+ * @pm_usage_cnt: PM usage counter for this interface
  * @reset_ws: Used for scheduling resets from atomic context.
  * @reset_running: set to 1 if the interface is currently running a
  *      queued reset so that usb_cancel_queued_reset() doesn't try to
···
 	int minor;			/* minor number this interface is
 					 * bound to */
 	enum usb_interface_condition condition;		/* state of binding */
-	unsigned is_active:1;		/* the interface is not suspended */
 	unsigned sysfs_files_created:1;	/* the sysfs attributes exist */
 	unsigned ep_devs_created:1;	/* endpoint "devices" exist */
 	unsigned unregistering:1;	/* unregistration is in progress */
···
  * @portnum: parent port number (origin 1)
  * @level: number of USB hub ancestors
  * @can_submit: URBs may be submitted
- * @discon_suspended: disconnected while suspended
  * @persist_enabled:  USB_PERSIST enabled for this device
  * @have_langid: whether string_langid is valid
  * @authorized: policy has said we can use it;
···
  * @usbfs_dentry: usbfs dentry entry for the device
  * @maxchild: number of ports if hub
  * @children: child devices - USB devices that are attached to this hub
- * @pm_usage_cnt: usage counter for autosuspend
  * @quirks: quirks of the whole device
  * @urbnum: number of URBs submitted for the whole device
  * @active_duration: total time device is not suspended
- * @autosuspend: for delayed autosuspends
- * @autoresume: for autoresumes requested while in_interrupt
- * @pm_mutex: protects PM operations
  * @last_busy: time of last use
  * @autosuspend_delay: in jiffies
  * @connect_time: time device was first connected
  * @do_remote_wakeup:  remote wakeup should be enabled
  * @reset_resume: needs reset instead of resume
  * @autosuspend_disabled: autosuspend disabled by the user
- * @skip_sys_resume: skip the next system resume
  * @wusb_dev: if this is a Wireless USB device, link to the WUSB
  *	specific data for the device.
  * @slot_id: Slot ID assigned by xHCI
···
 	u8 level;
 
 	unsigned can_submit:1;
-	unsigned discon_suspended:1;
 	unsigned persist_enabled:1;
 	unsigned have_langid:1;
 	unsigned authorized:1;
···
 	int maxchild;
 	struct usb_device *children[USB_MAXCHILDREN];
 
-	int pm_usage_cnt;
 	u32 quirks;
 	atomic_t urbnum;
 
 	unsigned long active_duration;
 
 #ifdef CONFIG_PM
-	struct delayed_work autosuspend;
-	struct work_struct autoresume;
-	struct mutex pm_mutex;
-
 	unsigned long last_busy;
 	int autosuspend_delay;
 	unsigned long connect_time;
···
 	unsigned do_remote_wakeup:1;
 	unsigned reset_resume:1;
 	unsigned autosuspend_disabled:1;
-	unsigned skip_sys_resume:1;
 #endif
 	struct wusb_dev *wusb_dev;
 	int slot_id;
···
 
 /* USB autosuspend and autoresume */
 #ifdef CONFIG_USB_SUSPEND
+extern int usb_enable_autosuspend(struct usb_device *udev);
+extern int usb_disable_autosuspend(struct usb_device *udev);
+
 extern int usb_autopm_get_interface(struct usb_interface *intf);
 extern void usb_autopm_put_interface(struct usb_interface *intf);
 extern int usb_autopm_get_interface_async(struct usb_interface *intf);
 extern void usb_autopm_put_interface_async(struct usb_interface *intf);
-
-static inline void usb_autopm_get_interface_no_resume(
-		struct usb_interface *intf)
-{
-	atomic_inc(&intf->pm_usage_cnt);
-}
-static inline void usb_autopm_put_interface_no_suspend(
-		struct usb_interface *intf)
-{
-	atomic_dec(&intf->pm_usage_cnt);
-}
+extern void usb_autopm_get_interface_no_resume(struct usb_interface *intf);
+extern void usb_autopm_put_interface_no_suspend(struct usb_interface *intf);
 
 static inline void usb_mark_last_busy(struct usb_device *udev)
 {
···
 }
 
 #else
+
+static inline int usb_enable_autosuspend(struct usb_device *udev)
+{ return 0; }
+static inline int usb_disable_autosuspend(struct usb_device *udev)
+{ return 0; }
 
 static inline int usb_autopm_get_interface(struct usb_interface *intf)
 { return 0; }
···
 extern void usb_unregister_notify(struct notifier_block *nb);
 
 #ifdef DEBUG
-#define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \
-	__FILE__ , ## arg)
+#define dbg(format, arg...)						\
+	printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg)
 #else
-#define dbg(format, arg...) do {} while (0)
+#define dbg(format, arg...)						\
+do {									\
+	if (0)								\
+		printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg); \
+} while (0)
 #endif
 
-#define err(format, arg...) printk(KERN_ERR KBUILD_MODNAME ": " \
-	format "\n" , ## arg)
+#define err(format, arg...)					\
+	printk(KERN_ERR KBUILD_MODNAME ": " format "\n", ##arg)
 
 /* debugfs stuff */
 extern struct dentry *usb_debug_root;

include/linux/usb/Kbuild

···
 header-y += midi.h
 header-y += g_printer.h
 header-y += tmc.h
-header-y += vstusb.h

include/linux/usb/atmel_usba_udc.h

···
 
 struct usba_platform_data {
 	int			vbus_pin;
+	int		 	vbus_pin_inverted;
 	int			num_ep;
 	struct usba_ep_data	ep[0];
 };

include/linux/usb/ch9.h

···
 	USB_SPEED_UNKNOWN = 0,			/* enumerating */
 	USB_SPEED_LOW, USB_SPEED_FULL,		/* usb 1.1 */
 	USB_SPEED_HIGH,				/* usb 2.0 */
-	USB_SPEED_VARIABLE,			/* wireless (usb 2.5) */
+	USB_SPEED_WIRELESS,			/* wireless (usb 2.5) */
 	USB_SPEED_SUPER,			/* usb 3.0 */
 };
 

include/linux/usb/musb.h

···
 struct musb_hdrc_config {
 	/* MUSB configuration-specific details */
 	unsigned	multipoint:1;	/* multipoint device */
-	unsigned	dyn_fifo:1;	/* supports dynamic fifo sizing */
-	unsigned	soft_con:1;	/* soft connect required */
-	unsigned	utm_16:1;	/* utm data witdh is 16 bits */
+	unsigned	dyn_fifo:1 __deprecated; /* supports dynamic fifo sizing */
+	unsigned	soft_con:1 __deprecated; /* soft connect required */
+	unsigned	utm_16:1 __deprecated; /* utm data witdh is 16 bits */
 	unsigned	big_endian:1;	/* true if CPU uses big-endian */
 	unsigned	mult_bulk_tx:1;	/* Tx ep required for multbulk pkts */
 	unsigned	mult_bulk_rx:1;	/* Rx ep required for multbulk pkts */
 	unsigned	high_iso_tx:1;	/* Tx ep required for HB iso */
 	unsigned	high_iso_rx:1;	/* Rx ep required for HD iso */
-	unsigned	dma:1;		/* supports DMA */
-	unsigned	vendor_req:1;	/* vendor registers required */
+	unsigned	dma:1 __deprecated; /* supports DMA */
+	unsigned	vendor_req:1 __deprecated; /* vendor registers required */
 
 	u8		num_eps;	/* number of endpoints _with_ ep0 */
-	u8		dma_channels;	/* number of dma channels */
+	u8		dma_channels __deprecated; /* number of dma channels */
 	u8		dyn_fifo_size;	/* dynamic size in bytes */
-	u8		vendor_ctrl;	/* vendor control reg width */
-	u8		vendor_stat;	/* vendor status reg witdh */
-	u8		dma_req_chan;	/* bitmask for required dma channels */
+	u8		vendor_ctrl __deprecated; /* vendor control reg width */
+	u8		vendor_stat __deprecated; /* vendor status reg witdh */
+	u8		dma_req_chan __deprecated; /* bitmask for required dma channels */
 	u8		ram_bits;	/* ram address size */
 
-	struct musb_hdrc_eps_bits *eps_bits;
+	struct musb_hdrc_eps_bits *eps_bits __deprecated;
 #ifdef CONFIG_BLACKFIN
         /* A GPIO controlling VRSEL in Blackfin */
         unsigned int    gpio_vrsel;
···
 
 	/* (HOST or OTG) msec/2 after VBUS on till power good */
 	u8		potpgt;
+
+	/* (HOST or OTG) program PHY for external Vbus */
+	unsigned	extvbus:1;
 
 	/* Power the device on or off */
 	int		(*set_power)(int state);

include/linux/usb/otg.h

···
 #ifndef __LINUX_USB_OTG_H
 #define __LINUX_USB_OTG_H
 
+#include <linux/notifier.h>
+
 /* OTG defines lots of enumeration states before device reset */
 enum usb_otg_state {
 	OTG_STATE_UNDEFINED = 0,
···
 	OTG_STATE_A_PERIPHERAL,
 	OTG_STATE_A_WAIT_VFALL,
 	OTG_STATE_A_VBUS_ERR,
+};
+
+enum usb_xceiv_events {
+	USB_EVENT_NONE,         /* no events or cable disconnected */
+	USB_EVENT_VBUS,         /* vbus valid event */
+	USB_EVENT_ID,           /* id was grounded */
+	USB_EVENT_CHARGER,      /* usb dedicated charger */
+	USB_EVENT_ENUMERATED,   /* gadget driver enumerated */
 };
 
 #define USB_OTG_PULLUP_ID		(1 << 0)
···
 
 	struct otg_io_access_ops	*io_ops;
 	void __iomem			*io_priv;
+
+	/* for notification of usb_xceiv_events */
+	struct blocking_notifier_head	notifier;
 
 	/* to pass extra port status to the root hub */
 	u16			port_status;
···
 	return otg->start_srp(otg);
 }
 
+/* notifiers */
+static inline int
+otg_register_notifier(struct otg_transceiver *otg, struct notifier_block *nb)
+{
+	return blocking_notifier_chain_register(&otg->notifier, nb);
+}
+
+static inline void
+otg_unregister_notifier(struct otg_transceiver *otg, struct notifier_block *nb)
+{
+	blocking_notifier_chain_unregister(&otg->notifier, nb);
+}
 
 /* for OTG controller drivers (and maybe other stuff) */
 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);

include/linux/usb/quirks.h

···
 /* device can't handle its Configuration or Interface strings */
 #define USB_QUIRK_CONFIG_INTF_STRINGS	0x00000008
 
+/*device will morph if reset, don't use reset for handling errors */
+#define USB_QUIRK_RESET_MORPHS		0x00000010
+
 #endif /* __LINUX_USB_QUIRKS_H */

include/linux/usb/serial.h

···
 
 /* Use our own dbg macro */
 #undef dbg
-#define dbg(format, arg...) \
-	do { \
-		if (debug) \
-			printk(KERN_DEBUG "%s: " format "\n" , __FILE__ , \
-				## arg); \
-	} while (0)
-
-
+#define dbg(format, arg...)						\
+do {									\
+	if (debug)							\
+		printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg);	\
+} while (0)
 
 #endif /* __LINUX_USB_SERIAL_H */
 

include/linux/usb/vstusb.h

···
-/*****************************************************************************
- *  File: drivers/usb/misc/vstusb.h
- *
- *  Purpose: Support for the bulk USB Vernier Spectrophotometers
- *
- *  Author:     EQware Engineering, Inc.
- *              Oregon City, OR, USA 97045
- *
- *  Copyright:  2007, 2008
- *              Vernier Software & Technology
- *              Beaverton, OR, USA 97005
- *
- *  Web:        www.vernier.com
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  published by the Free Software Foundation.
- *
- *****************************************************************************/
-/*****************************************************************************
- *
- *  The vstusb module is a standard usb 'client' driver running on top of the
- *  standard usb host controller stack.
- *
- *  In general, vstusb supports standard bulk usb pipes.  It supports multiple
- *  devices and multiple pipes per device.
- *
- *  The vstusb driver supports two interfaces:
- *  1 - ioctl SEND_PIPE/RECV_PIPE - a general bulk write/read msg
- *  	interface to any pipe with timeout support;
- *  2 - standard read/write with ioctl config - offers standard read/write
- *  	interface with ioctl configured pipes and timeouts.
- *
- *  Both interfaces can be signal from other process and will abort its i/o
- *  operation.
- *
- *  A timeout of 0 means NO timeout.  The user can still terminate the read via
- *  signal.
- *
- *  If using multiple threads with this driver, the user should ensure that
- *  any reads, writes, or ioctls are complete before closing the device.
- *  Changing read/write timeouts or pipes takes effect on next read/write.
- *
- *****************************************************************************/
-
-struct vstusb_args {
-	union {
-		/* this struct is used for IOCTL_VSTUSB_SEND_PIPE,	*
-		 * IOCTL_VSTUSB_RECV_PIPE, and read()/write() fops	*/
-		struct {
-			void __user	*buffer;
-			size_t          count;
-			unsigned int    timeout_ms;
-			int             pipe;
-		};
-
-		/* this one is used for IOCTL_VSTUSB_CONFIG_RW  	*/
-		struct {
-			int rd_pipe;
-			int rd_timeout_ms;
-			int wr_pipe;
-			int wr_timeout_ms;
-		};
-	};
-};
-
-#define VST_IOC_MAGIC 'L'
-#define VST_IOC_FIRST 0x20
-#define IOCTL_VSTUSB_SEND_PIPE	_IO(VST_IOC_MAGIC, VST_IOC_FIRST)
-#define IOCTL_VSTUSB_RECV_PIPE	_IO(VST_IOC_MAGIC, VST_IOC_FIRST + 1)
-#define IOCTL_VSTUSB_CONFIG_RW	_IO(VST_IOC_MAGIC, VST_IOC_FIRST + 2)