linux-stable.git/drivers/input, branch linux-5.0.y

Input: synaptics-rmi4 - fix possible double free

2019-05-16T17:40:26+00:00

[ Upstream commit bce1a78423961fce676ac65540a31b6ffd179e6d ]

The RMI4 function structure has been released in rmi_register_function
if error occurs. However, it will be released again in the function
rmi_create_function, which may result in a double-free bug.

Signed-off-by: Pan Bian 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: snvs_pwrkey - make it depend on ARCH_MXC

2019-05-16T17:40:26+00:00

[ Upstream commit f06eba72274788db6a43012a05a99915c0283aef ]

The SNVS power key is not only used on i.MX6SX and i.MX7D, it is also
used by i.MX6UL and NXP's latest ARMv8 based i.MX8M series SOC. So
update the config dependency to use ARCH_MXC, and add the COMPILE_TEST
too.

Signed-off-by: Jacky Bai 
Reviewed-by: Dong Aisheng 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: stmfts - acknowledge that setting brightness is a blocking call

2019-05-08T05:22:58+00:00

commit 937c4e552fd1174784045684740edfcea536159d upstream.

We need to turn regulators on and off when switching brightness, and
that may block, therefore we have to set stmfts_brightness_set() as
LED's brightness_set_blocking() method.

Fixes: 78bcac7b2ae1 ("Input: add support for the STMicroelectronics FingerTip touchscreen")
Acked-by: Andi Shyti 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ

2019-05-08T05:22:58+00:00

commit bf2a7ca39fd3ab47ef71c621a7ee69d1813b1f97 upstream.

SNVS IRQ is requested before necessary driver data initialized,
if there is a pending IRQ during driver probe phase, kernel
NULL pointer panic will occur in IRQ handler. To avoid such
scenario, just initialize necessary driver data before enabling
IRQ. This patch is inspired by NXP's internal kernel tree.

Fixes: d3dc6e232215 ("input: keyboard: imx: add snvs power key driver")
Signed-off-by: Anson Huang 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: synaptics-rmi4 - write config register values to the right offset

2019-05-02T08:02:46+00:00

commit 3a349763cf11e63534b8f2d302f2d0c790566497 upstream.

Currently any changed config register values don't take effect, as the
function to write them back is called with the wrong register offset.

Fixes: ff8f83708b3e (Input: synaptics-rmi4 - add support for 2D
                     sensors and F11)
Signed-off-by: Lucas Stach 
Reviewed-by: Philipp Zabel 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c - add hardware ID for multiple Lenovo laptops

2019-04-27T07:37:40+00:00

commit 738c06d0e4562e0acf9f2c7438a22b2d5afc67aa upstream.

There are many Lenovo laptops which need elan_i2c support, this patch adds
relevant IDs to the Elan driver so that touchpads are recognized.

Signed-off-by: KT Liao 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: soc_button_array - fix mapping of the 5th GPIO in a PNP0C40 device

2019-04-05T20:34:53+00:00

[ Upstream commit e9eb788f9442d1b5d93efdb30c3be071ce8a22b1 ]

The Microsoft documenation for the PNP0C40 device aka the
"Windows-compatible button array" describes the 5th GpioInt listed in
the resources as: '5. Interrupt corresponding to the "Rotation Lock"
button, if supported'.

Notice this describes the 5th entry as a button while we sofar have been
mapping it to EV_SW, SW_ROTATE_LOCK. On my Point of View TAB P1006W-232
which actually comes with a rotation-lock button, the button indeed is a
button and not a slider/switch. An image search for other Windows tablets
has found 2 more models with a rotation-lock button and on both of those
it too is a push-button and not a slider/switch.

Further evidence can be found in the HUT extension HUTRR52 from Microsoft
which adds rotation lock support to the HUT, which describes 2 different
usages: "0xC9 System Display Rotation Lock Button" and
"0xCA System Display Rotation Lock Slider Switch" note that switch is seen
as a separate thing here and the non switch wording is an exact match for
the "Windows-compatible button array" spec wording.

TL;DR: our current mapping of the 5th GPIO to SW_ROTATE_LOCK is wrong
because the 5th GPIO is for a push-button not a switch.

This commit fixes this by maping the 5th GPIO to KEY_ROTATE_LOCK_TOGGLE.

Signed-off-by: Hans de Goede 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: elan_i2c - add id for touchpad found in Lenovo s21e-20

2019-03-13T21:01:29+00:00

commit e154ab69321ce2c54f19863d75c77b4e2dc9d365 upstream.

Lenovo s21e-20 uses ELAN0601 in its ACPI tables for the Elan touchpad.

Signed-off-by: Vincent Batts 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: wacom_serial4 - add support for Wacom ArtPad II tablet

2019-03-13T21:01:29+00:00

commit 44fc95e218a09d7966a9d448941fdb003f6bb69f upstream.

Tablet initially begins communicating at 9600 baud, so this command
should be used to connect to the device:

    $ inputattach --daemon --baud 9600 --wacom_iv /dev/ttyS0

https://github.com/linuxwacom/xf86-input-wacom/issues/40

Signed-off-by: Jason Gerecke 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2019-02-17T16:30:35+00:00

Pull input fixes from Dmitry Torokhov:

 - tweaks to Elan drivers (both PS/2 and I2C) to support new devices.
   Also revert of one of IDs as that device should really be driven by
   i2c-hid + hid-multitouch

 - a few drivers have been switched to set_brightness_blocking() call
   because they either were sleeping the their set_brightness()
   implementation or used workqueue but were not canceling it on unbind.

 - ps2-gpio and matrix_keypad needed to [properly] flush their works to
   avoid potential use-after-free on unbind.

 - other miscellaneous fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK
  Input: st-keyscan - fix potential zalloc NULL dereference
  Input: apanel - switch to using brightness_set_blocking()
  Revert "Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G"
  Input: qt2160 - switch to using brightness_set_blocking()
  Input: matrix_keypad - use flush_delayed_work()
  Input: ps2-gpio - flush TX work when closing port
  Input: cap11xx - switch to using set_brightness_blocking()
  Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780
  Input: bma150 - register input device after setting private data
  Input: pwm-vibra - stop regulator after disabling pwm, not before
  Input: pwm-vibra - prevent unbalanced regulator
  Input: snvs_pwrkey - allow selecting driver for i.MX 7D