linux-stable.git/drivers/input/mouse, branch linux-4.17.y

Input: elan_i2c - add another ACPI ID for Lenovo Ideapad 330-15AST

2018-08-03T05:47:31+00:00

commit 6f88a6439da5d94de334a341503bc2c7f4a7ea7f upstream.

Add ELAN0622 to ACPI mapping table to support Elan touchpad found in
Ideapad 330-15AST.

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

Input: elan_i2c - add ACPI ID for lenovo ideapad 330

2018-08-03T05:47:31+00:00

commit 938f45008d8bc391593c97508bc798cc95a52b9b upstream.

This allows Elan driver to bind to the touchpad found in Lenovo Ideapad 330
series laptops.

Signed-off-by: Donald Shanty III 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elantech - fix V4 report decoding for module with middle key

2018-07-03T09:27:10+00:00

commit e0ae2519ca004a628fa55aeef969c37edce522d3 upstream.

Some touchpad has middle key and it will be indicated in bit 2 of packet[0].
We need to fix V4 formation's byte mask to prevent error decoding.

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

Input: elantech - enable middle button of touchpads on ThinkPad P52

2018-07-03T09:27:10+00:00

commit 24bb555e6e46d96e2a954aa0295029a81cc9bbaa upstream.

PNPID is better way to identify the type of touchpads.
Enable middle button support on 2 types of touchpads on Lenovo P52.

Cc: stable@vger.kernel.org
Signed-off-by: Aaron Ma 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c_smbus - fix more potential stack buffer overflows

2018-07-03T09:27:10+00:00

commit 50fc7b61959af4b95fafce7fe5dd565199e0b61a upstream.

Commit 40f7090bb1b4 ("Input: elan_i2c_smbus - fix corrupted stack")
fixed most of the functions using i2c_smbus_read_block_data() to
allocate a buffer with the maximum block size.  However three
functions were left unchanged:

* In elan_smbus_initialize(), increase the buffer size in the same
  way.
* In elan_smbus_calibrate_result(), the buffer is provided by the
  caller (calibrate_store()), so introduce a bounce buffer.  Also
  name the result buffer size.
* In elan_smbus_get_report(), the buffer is provided by the caller
  but happens to be the right length.  Add a compile-time assertion
  to ensure this remains the case.

Cc:  # 3.19+
Signed-off-by: Ben Hutchings 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: psmouse - fix button reporting for basic protocols

2018-07-03T09:27:09+00:00

commit 03ae3a9caf4a59edd32b65c89c375a98ce3ea1ef upstream.

The commit ba667650c568 ("Input: psmouse - clean up code") was pretty
brain-dead and broke extra buttons reporting for variety of PS/2 mice:
Genius, Thinkmouse and Intellimouse Explorer. We need to actually inspect
the data coming from the device when reporting events.

Fixes: ba667650c568 ("Input: psmouse - clean up code")
Reported-by: Jiri Slaby 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c - add ELAN0618 (Lenovo v330 15IKB) ACPI ID

2018-07-03T09:27:08+00:00

commit 8938fc7b8fe9ccfa11751ead502a8d385b607967 upstream.

Add ELAN0618 to the list of supported touchpads; this ID is used in
Lenovo v330 15IKB devices.

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

Input: elan_i2c - add ELAN0612 (Lenovo v330 14IKB) ACPI ID

2018-06-16T07:18:23+00:00

commit e6e7e9cd8eed0e18217c899843bffbe8c7dae564 upstream.

Add ELAN0612 to the list of supported touchpads; this ID is used in Lenovo
v330 14IKB devices.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199253
Signed-off-by: Johannes Wienke 
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c_smbus - fix corrupted stack

2018-05-23T18:48:59+00:00

New ICs (like the one on the Lenovo T480s) answer to
ETP_SMBUS_IAP_VERSION_CMD 4 bytes instead of 3. This corrupts the stack
as i2c_smbus_read_block_data() uses the values returned by the i2c
device to know how many data it need to return.

i2c_smbus_read_block_data() can read up to 32 bytes (I2C_SMBUS_BLOCK_MAX)
and there is no safeguard on how many bytes are provided in the return
value. Ensure we always have enough space for any future firmware.
Also 0-initialize the values to prevent any access to uninitialized memory.

Cc:  # v4.4.x, v4.9.x, v4.14.x, v4.15.x, v4.16.x
Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov

Input: synaptics - add Lenovo 80 series ids to SMBus

2018-05-23T18:47:04+00:00

This time, Lenovo decided to go with different pieces in its latest
series of Thinkpads.

For those we have been able to test:
- the T480 is using Synaptics with an IBM trackpoint
   -> it behaves properly with or without intertouch, there is no point
      not using RMI4
- the X1 Carbon 6th gen is using Synaptics with an IBM trackpoint
   -> the touchpad doesn't behave properly under PS/2 so we have to
      switch it to RMI4 if we do not want to have disappointed users
- the X280 is using Synaptics with an ALPS trackpoint
   -> the recent fixes in the trackpoint handling fixed it so upstream
      now works fine with or without RMI4, and there is no point not
      using RMI4
- the T480s is using an Elan touchpad, so that's a different story

Cc:  # v4.14.x, v4.15.x, v4.16.x
Signed-off-by: Benjamin Tissoires 
Acked-by: KT Liao 
Signed-off-by: Dmitry Torokhov