linux.git/drivers/hid/hid-core.c, branch v5.16

bus: Make remove callback return void

2021-07-21T09:53:42+00:00

The driver core ignores the return value of this callback because there
is only little it can do when a device disappears.

This is the final bit of a long lasting cleanup quest where several
buses were converted to also return void from their remove callback.
Additionally some resource leaks were fixed that were caused by drivers
returning an error code in the expectation that the driver won't go
away.

With struct bus_type::remove returning void it's prevented that newly
implemented buses return an ignored error code and so don't anticipate
wrong expectations for driver authors.

Reviewed-by: Tom Rix  (For fpga)
Reviewed-by: Mathieu Poirier 
Reviewed-by: Cornelia Huck  (For drivers/s390 and drivers/vfio)
Acked-by: Russell King (Oracle)  (For ARM, Amba and related parts)
Acked-by: Mark Brown 
Acked-by: Chen-Yu Tsai  (for sunxi-rsb)
Acked-by: Pali Rohár 
Acked-by: Mauro Carvalho Chehab  (for media)
Acked-by: Hans de Goede  (For drivers/platform)
Acked-by: Alexandre Belloni 
Acked-By: Vinod Koul 
Acked-by: Juergen Gross  (For xen)
Acked-by: Lee Jones  (For mfd)
Acked-by: Johannes Thumshirn  (For mcb)
Acked-by: Johan Hovold 
Acked-by: Srinivas Kandagatla  (For slimbus)
Acked-by: Kirti Wankhede  (For vfio)
Acked-by: Maximilian Luz 
Acked-by: Heikki Krogerus  (For ulpi and typec)
Acked-by: Samuel Iglesias Gonsálvez  (For ipack)
Acked-by: Geoff Levand  (For ps3)
Acked-by: Yehezkel Bernat  (For thunderbolt)
Acked-by: Alexander Shishkin  (For intel_th)
Acked-by: Dominik Brodowski  (For pcmcia)
Acked-by: Rafael J. Wysocki  (For ACPI)
Acked-by: Bjorn Andersson  (rpmsg and apr)
Acked-by: Srinivas Pandruvada  (For intel-ish-hid)
Acked-by: Dan Williams  (For CXL, DAX, and NVDIMM)
Acked-by: William Breathitt Gray  (For isa)
Acked-by: Stefan Richter  (For firewire)
Acked-by: Benjamin Tissoires  (For hid)
Acked-by: Thorsten Scherer  (For siox)
Acked-by: Sven Van Asbroeck  (For anybuss)
Acked-by: Ulf Hansson  (For MMC)
Acked-by: Wolfram Sang  # for I2C
Acked-by: Sudeep Holla 
Acked-by: Geert Uytterhoeven 
Acked-by: Dmitry Torokhov 
Acked-by: Finn Thain 
Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-5.14/core' into for-linus

2021-06-30T07:03:51+00:00

- device unbinding locking fix from Dmitry Torokhov
- support for programmable buttons (mapping to KEY_MACRO# event codes)
  from Thomas Weißschuh
- various other small fixes and code style improvements

HID: core: Remove extraneous empty line before EXPORT_SYMBOL_GPL(hid_check_keys_pressed)

2021-05-27T13:40:34+00:00

Normally the EXPORT_SYMBOL of a function immediately follows the
declaration of the function and all the other functions in hid-core.c
follow this pattern, drop the extraneous empty line before the
EXPORT_SYMBOL_GPL(hid_check_keys_pressed); line.

Signed-off-by: Hans de Goede 
Signed-off-by: Jiri Kosina

HID: Add BUS_VIRTUAL to hid_connect logging

2021-05-05T13:09:09+00:00

Add BUS_VIRTUAL to hid_connect logging since it's a valid hid bus type and it
should not print 

Signed-off-by: Mark Bolhuis 
Signed-off-by: Jiri Kosina

HID: do not use down_interruptible() when unbinding devices

2021-05-05T12:24:56+00:00

Action of unbinding driver from a device is not cancellable and should not
fail, and driver core does not pay attention to the result of "remove"
method, therefore using down_interruptible() in hid_device_remove() does
not make sense.

Signed-off-by: Dmitry Torokhov 
Signed-off-by: Jiri Kosina

HID: hid-core: Fix incorrect function name in header

2021-04-07T16:46:20+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/hid/hid-core.c:2142: warning: expecting prototype for store_new_id(). Prototype was for new_id_store() instead

Cc: Jiri Kosina 
Cc: Benjamin Tissoires 
Cc: Vojtech Pavlik 
Cc: Michael Haboustak 
Cc: linux-input@vger.kernel.org
Signed-off-by: Lee Jones 
Signed-off-by: Benjamin Tissoires

HID: make arrays usage and value to be the same

2021-01-18T08:09:57+00:00

The HID subsystem allows an "HID report field" to have a different
number of "values" and "usages" when it is allocated. When a field
struct is created, the size of the usage array is guaranteed to be at
least as large as the values array, but it may be larger. This leads to
a potential out-of-bounds write in
__hidinput_change_resolution_multipliers() and an out-of-bounds read in
hidinput_count_leds().

To fix this, let's make sure that both the usage and value arrays are
the same size.

Cc: stable@vger.kernel.org
Signed-off-by: Will McVicker 
Signed-off-by: Jiri Kosina

HID: core: detect and skip invalid inputs to snto32()

2021-01-08T13:50:40+00:00

Prevent invalid (0, 0) inputs to hid-core's snto32() function.

Maybe it is just the dummy device here that is causing this, but
there are hundreds of calls to snto32(0, 0). Having n (bits count)
of 0 is causing the current UBSAN trap with a shift value of
0xffffffff (-1, or n - 1 in this function).

Either of the value to shift being 0 or the bits count being 0 can be
handled by just returning 0 to the caller, avoiding the following
complex shift + OR operations:

	return value & (1 << (n - 1)) ? value | (~0U << n) : value;

Fixes: dde5845a529f ("[PATCH] Generic HID layer - code split")
Signed-off-by: Randy Dunlap 
Reported-by: syzbot+1e911ad71dd4ea72e04a@syzkaller.appspotmail.com
Cc: Jiri Kosina 
Cc: Benjamin Tissoires 
Cc: linux-input@vger.kernel.org
Signed-off-by: Jiri Kosina

Merge branch 'for-5.9/upstream-fixes' into for-linus

2020-10-15T18:41:43+00:00

- "heartbeat" report fix for several Wacom devices
- Lenovo X1 Tablet support improvements
- new device IDs
- bounds checking fix in hid-roccat
- stylus battery reporting fix

HID: add vivaldi HID driver

2020-09-30T20:44:26+00:00

Add vivaldi HID driver. This driver allows us to read and report the top
row layout of keyboards which provide a vendor-defined (Google) HID
usage.

Signed-off-by: Sean O'Brien 
Signed-off-by: Jiri Kosina