[PATCH 0/1] [A/OEM] TrackPoint: enable middle button on compatible sticks

[Aaron Ma]

BugLink: https://bugs.launchpad.net/bugs/1746002

[Impact]
Middle button on some TrackPoints with ThinkPad can't work on Ubuntu
16.04. 
Lenovo introduced 4 new TrackPoint compatible sticks those only support
minimum commands, Sticks with ID 01/02 reported the external button 0,
TrackPoint always have 3 buttons.

[Fix]
Set 3 buttons when 0 button is reported via PS/2 commands.

[Test Case]
Tested on Finn and E470, middle button works with this patch.

[Regression Potential]
No regression is expected.

This patch had been send to stable kernel, so Bionic should have it
with stable updates.

Aaron Ma (1):
  Input: trackpoint - force 3 buttons if 0 button is reported

 drivers/input/mouse/trackpoint.c | 3 +++
 1 file changed, 3 insertions(+)

-- 
2.14.3