** Description changed:

- Expected result:
- Trackpoint and keys should work.
+ [Impact]
+ On one of the latest Lenovo laptops, the trackpoint doesn't work, we
+ consulted apls guys, they said this trackpoint is different from others,
+ it is a trackpoint-only device, so the current alps.c doesn't support it
+ well, while the trackpoint.c can drive it well.
  
- Actual result:
- Trackpoint and keys should doesn't work.
+ [Fix]
+ Check if it is trakcpoint-only device, if it yes, let trackpoint.c
+ handle it.
+ 
+ [Test Case]
+ apply this patch and boot with the kernel, the trackpoint can work
+ well.
+ 
+ [Regression Risk]
+ Low. the way of detect trackpoint-only alps device is provided by
+ alps. so it is pretty safe.

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https://bugs.launchpad.net/bugs/1836752

Title:
  input/mouse: alps trackpoint-only device doesn't work

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