tjh.dev
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
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https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Pull USB fixes from Greg KH:
"The USB sub-maintainers woke up this past week and sent a bunch of
tiny fixes. Here are a lot of small patches that that resolve a bunch
of reported issues in the USB core, drivers, serial drivers, gadget
drivers, and of course, xhci :)
All of these have been in linux-next with no reported issues"
* tag 'usb-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (31 commits)
usb: dwc3: gadget: fix race when disabling ep with cancelled xfers
usb: cdns3: gadget: Fix g_audio use case when connected to Super-Speed host
usb: cdns3: gadget: reset EP_CLAIMED flag while unloading
USB: serial: whiteheat: fix line-speed endianness
USB: serial: whiteheat: fix potential slab corruption
USB: gadget: Reject endpoints with 0 maxpacket value
UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments")
usb-storage: Revert commit 747668dbc061 ("usb-storage: Set virt_boundary_mask to avoid SG overflows")
usbip: Fix free of unallocated memory in vhci tx
usbip: tools: Fix read_usb_vudc_device() error path handling
usb: xhci: fix __le32/__le64 accessors in debugfs code
usb: xhci: fix Immediate Data Transfer endianness
xhci: Fix use-after-free regression in xhci clear hub TT implementation
USB: ldusb: fix control-message timeout
USB: ldusb: use unsigned size format specifiers
USB: ldusb: fix ring-buffer locking
USB: Skip endpoints with 0 maxpacket length
usb: cdns3: gadget: Don't manage pullups
usb: dwc3: remove the call trace of USBx_GFLADJ
usb: gadget: configfs: fix concurrent issue between composite APIs
...
Pull cifs fix from Steve French:
"A small smb3 memleak fix"
* tag '5.4-rc6-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6:
fix memory leak in large read decrypt offload
When disabling an endpoint which has cancelled requests, we should
make sure to giveback requests that are currently pending in the
cancelled list, otherwise we may fall into a situation where command
completion interrupt fires after endpoint has been disabled, therefore
causing a splat.
Fixes: fec9095bdef4 "usb: dwc3: gadget: remove wait_end_transfer"
Reported-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Link: https://lore.kernel.org/r/20191031090713.1452818-1-felipe.balbi@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'hwmon-for-v5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Fix read timeout problem in ina3221 driver
- Fix wrong bitmask in nct7904 driver
* tag 'hwmon-for-v5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (ina3221) Fix read timeout issue
hwmon: (nct7904) Fix the incorrect value of vsen_mask & tcpu_mask & temp_mode in nct7904_data struct.
Spotted by Ronnie.
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Take into account gadget driver's speed limit when programming
controller speed.
Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20191030121607.21739-1-rogerq@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull pwm fixes from Thierry Reding:
"It turned out that relying solely on drivers storing all the PWM state
in hardware was a little premature and causes a number of subtle (and
some not so subtle) regressions. Revert the offending patch for now"
* tag 'pwm/for-5.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
Revert "pwm: Let pwm_get_state() return the last implemented state"
After introducing "samples" to the calculation of wait time, the
driver might timeout at the regmap_field_read_poll_timeout call,
because the wait time could be longer than the 100000 usec limit
due to a large "samples" number.
So this patch sets the timeout limit to 2 times of the wait time
in order to fix this issue.
Fixes: 5c090abf945b ("hwmon: (ina3221) Add averaging mode support")
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/20191022005922.30239-1-nicoleotsuka@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
EP_CLAIMED flag is used to track the claimed endpoints. While unloading the
module, Reset EP_CLAIMED flag for all enabled endpoints. So that it can be
reused.
Signed-off-by: Sanket Parmar <sparmar@cadence.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Acked-by: Felipe Balbi <balbi@kernel.org>
Link: https://lore.kernel.org/r/20191029122441.5816-1-sparmar@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull SCSI fixes from James Bottomley:
"Nine changes, eight in drivers [ufs, target, lpfc x 2, qla2xxx x 4]
and one core change in sd that fixes an I/O failure on DIF type 3
devices"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: stop timer in shutdown path
scsi: sd: define variable dif as unsigned int instead of bool
scsi: target: cxgbit: Fix cxgbit_fw4_ack()
scsi: qla2xxx: Fix partial flash write of MBI
scsi: qla2xxx: Initialized mailbox to prevent driver load failure
scsi: lpfc: Honor module parameter lpfc_use_adisc
scsi: ufs-bsg: Wake the device before sending raw upiu commands
scsi: lpfc: Check queue pointer before use
scsi: qla2xxx: fixup incorrect usage of host_byte
It turns out that commit 01ccf903edd6 ("pwm: Let pwm_get_state() return
the last implemented state") causes backlight failures on a number of
boards. The reason is that some of the drivers do not write the full
state through to the hardware registers, which means that ->get_state()
subsequently does not return the correct state. Consumers which rely on
pwm_get_state() returning the current state will therefore get confused
and subsequently try to program a bad state.
Before this change can be made, existing drivers need to be more
carefully audited and fixed to behave as the framework expects. Until
then, keep the original behaviour of returning the software state that
was applied rather than reading the state back from hardware.
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Voltage sensors overlap with external temperature sensors. Detect
the multi-function of voltage, thermal diode, thermistor and
reserved from register VT_ADC_MD_REG to set value of vsen_mask &
tcpu_mask & temp_mode in nct7904_data struct. If the value is
reserved, needs to disable the vsen_mask & tcpu_mask.
Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
Link: https://lore.kernel.org/r/20191014082451.2895-1-Amy.Shih@advantech.com.tw
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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