APPLIED(B,D)/cmt: [SRU][B/OEM-B/D/OEM-OSP1-B/E][PATCH v2 0/2] input/mouse: alps trackpoint-only device doesn't work

[Khaled Elmously]

Applied to Disco only, after updating the SHA references as Stefan said. Bug wasn't targeted for D so I targeted it.

Both patches were already present in Bionic via stable-updates, so marking the thread as applied to B as well.



On 2019-07-19 22:39:15 , Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1836752
> 
> In the V2:
> I added one more patch (0002) to fix the problem of condition checking
> of 0x20~0x2f (apw found this problem in the v1)
> 
> Since the OEM-OSP1-B already merged 0001, it only needs to merge 0002
> this time, for the rest of kernel version, need to merge 0001 and 0002.
> 
> [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.
> 
> [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. and I have tested the patch on two
> lenovo machines with alsp touchpad+trackpoint device, they worked
> well.
> 
> 
> Hui Wang (2):
>   Input: alps - don't handle ALPS cs19 trackpoint-only device
>   Input: alps - fix a mismatch between a condition check and its comment
> 
>  drivers/input/mouse/alps.c | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> -- 
> 2.17.1
> 
> 
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