Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
code
Clone this repository
https://tangled.org/tjh.dev/kernel
git@gordian.tjh.dev:tjh.dev/kernel
For self-hosted knots, clone URLs may differ based on your setup.
Pull staging and IIO fixes from Greg KH:
"Here are a small number of patches to resolve some reported IIO and a
staging driver problem. Nothing major here, full details are in the
shortlog below.
All have been in linux-next with no reported issues"
* tag 'staging-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: bcm2835-audio: Fix memory corruption
iio: adc: at91-sama5d2_adc: fix probe error on missing trigger property
iio: adc: dln2-adc: fix build error
iio: dummy: events: Add missing break
staging: iio: ade7759: fix signed extension bug on shift of a u8
iio: pressure: zpa2326: Remove always-true check which confuses gcc
iio: proximity: as3935: noise detection + threshold changes
Pull char/misc driver fixes from Greg KH:
"Here are four small fixes for 4.14-rc6.
Three of them are binder driver fixes for reported issues, and the
last one is a hyperv driver bugfix. Nothing major, but good fixes to
get into 4.14-final.
All of these have been in linux-next with no reported issues"
* tag 'char-misc-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
android: binder: Fix null ptr dereference in debug msg
android: binder: Don't get mm from task
vmbus: hvsock: add proper sync for vmbus_hvsock_device_unregister()
binder: call poll_wait() unconditionally.
The previous commit (0adbfd46) fixed a memory leak but also freed a
block in the success case, causing a stale pointer to be used with
potentially fatal results. Only free the vchi_instance block in the
case that vchi_connect fails; once connected, the instance is
retained for subsequent connections.
Simplifying the code by removing a bunch of gotos and returning errors
directly.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Fixes: 0adbfd4694c2 ("staging: bcm2835-audio: fix memory leak in bcm2835_audio_open_connection()")
Cc: stable <stable@vger.kernel.org> # 4.12+
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull USB/PHY fixes from Greg KH:
"Here are a small number of USB and PHY driver fixes for 4.14-rc6
There is the usual musb and xhci fixes in here, as well as some needed
phy patches. Also is a nasty regression fix for usbfs that has started
to hit a lot of people using virtual machines.
All of these have been in linux-next with no reported problems"
* tag 'usb-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
usb: hub: Allow reset retry for USB2 devices on connect bounce
USB: core: fix out-of-bounds access bug in usb_get_bos_descriptor()
MAINTAINERS: fix git tree url for musb module
usb: quirks: add quirk for WORLDE MINI MIDI keyboard
usb: musb: sunxi: Explicitly release USB PHY on exit
usb: musb: Check for host-mode using is_host_active() on reset interrupt
usb: musb: musb_cppi41: Configure the number of channels for DA8xx
usb: musb: musb_cppi41: Fix cppi41_set_dma_mode() for DA8xx
usb: musb: musb_cppi41: Fix the address of teardown and autoreq registers
USB: musb: fix late external abort on suspend
USB: musb: fix session-bit runtime-PM quirk
usb: cdc_acm: Add quirk for Elatec TWN3
USB: devio: Revert "USB: devio: Don't corrupt user memory"
usb: xhci: Handle error condition in xhci_stop_device()
usb: xhci: Reset halted endpoint if trb is noop
xhci: Cleanup current_cmd in xhci_cleanup_command_queue()
xhci: Identify USB 3.1 capable hosts by their port protocol capability
USB: serial: metro-usb: add MS7820 device id
phy: rockchip-typec: Check for errors from tcphy_phy_init()
phy: rockchip-typec: Don't set the aux voltage swing to 400 mV
...
Don't access next->data in kernel debug message when the
next buffer is null.
Acked-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jonathan writes:
Second set of IIO fixes for the 4.14 cycle.
* ade7759
- Fix a signed extension bug.
* as3935
- The default noise and watch dog settings were such that the device
was unusuable in most applications. Add device tree parameters to
allow it to be configured to something that will actually work.
* at91-sama5d2 adc
- Fix handling of legacy device trees that don't provide the new
trigger edge property.
* dln2-adc
- Fix a missing Kconfig dependency on IIO_TRIGGERED_BUFFER.
* dummy driver
- Add a missing break so that writing in_voltage0_thresh_rising_en
doesn't always result in an error.
* zpa2326
- Drop a test for an always true condition so that gcc won't spit out
and unused variable warning.
Pull input fix from Dmitry Torokhov:
"A fix for a broken commit in the previous pull breaking automatic
module loading of input handlers, such ad evdev"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: do not use property bits when generating module alias
If the connect status change is set during reset signaling, but
the status remains connected just retry port reset.
This solves an issue with connecting a 90W HP Thunderbolt 3 dock
with a Lenovo Carbon x1 (5th generation) which causes a 30min loop
of a high speed device being re-discovererd before usb ports starts
working.
[...]
[ 389.023845] usb 3-1: new high-speed USB device number 55 using xhci_hcd
[ 389.491841] usb 3-1: new high-speed USB device number 56 using xhci_hcd
[ 389.959928] usb 3-1: new high-speed USB device number 57 using xhci_hcd
[...]
This is caused by a high speed device that doesn't successfully go to the
enabled state after the second port reset. Instead the connection bounces
(connected, with connect status change), bailing out completely from
enumeration just to restart from scratch.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1716332
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use binder_alloc struct's mm_struct rather than getting
a reference to the mm struct through get_task_mm to
avoid a potential deadlock between lru lock, task lock and
dentry lock, since a thread can be holding the task lock
and the dentry lock while trying to acquire the lru lock.
Acked-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This fix allows platforms to probe correctly even if the
trigger edge property is missing. The hardware trigger
will no longer be registered in the sybsystem
Preserves backwards compatibility with the support that
was in the driver before the hardware trigger.
https://storage.kernelci.org/mainline/master/v4.14-rc2-255-g74d83ec2b734/arm/sama5_defconfig/lab-free-electrons/boot-at91-sama5d2_xplained.txt
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Fixes: 5e1a1da0f ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Pull x86 fixes from Thomas Gleixner:
"A couple of fixes addressing the following issues:
- The last polishing for the TLB code, removing the last BUG_ON() and
the debug file along with tidying up the lazy TLB code.
- Prevent triple fault on 1st Gen. 486 caused by stupidly calling the
early IDT setup after the first function which causes a fault which
should be caught by the exception table.
- Limit the mmap of /dev/mem to valid addresses
- Prevent late microcode loading on Broadwell X
- Remove a redundant assignment in the cache info code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Limit mmap() of /dev/mem to valid physical addresses
x86/mm: Remove debug/x86/tlb_defer_switch_to_init_mm
x86/mm: Tidy up "x86/mm: Flush more aggressively in lazy TLB mode"
x86/mm/64: Remove the last VM_BUG_ON() from the TLB code
x86/microcode/intel: Disable late loading on model 79
x86/idt: Initialize early IDT before cr4_init_shadow()
x86/cpu/intel_cacheinfo: Remove redundant assignment to 'this_leaf'
The commit 8724ecb07229 ("Input: allow matching device IDs on property
bits") started using property bits when generating module aliases for input
handlers, but did not adjust the generation of MODALIAS attribute on input
device uevents, breaking automatic module loading. Given that no handler
currently uses property bits in their module tables, let's revert this part
of the commit for now.
Reported-by: Damien Wyart <damien.wyart@gmail.com>
Tested-by: Damien Wyart <damien.wyart@gmail.com>
Fixes: 8724ecb07229 ("Input: allow matching device IDs on property bits")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>