Re: [PATCH 7.1 00/21] 7.1.2-rc1 review

["Barry K. Nathan" <barryn@pobox.com>]

(cc Dmitry Torokhov because this is related to two of your commits)

On 6/25/26 6:03 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 7.1.2 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sat, 27 Jun 2026 12:54:50 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v7.x/stable-review/patch-7.1.2-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-7.1.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

Unfortunately, 7.1.2-rc1 breaks the Synaptics touchpad on my Lenovo
ThinkPad T14 Gen 1 -- the pointer no longer moves when I touch the
touchpad. Potentially relevant line from dmesg:

rmi4_f01 rmi4-00.fn01: found RMI device, manufacturer: Synaptics, product: TM3471-020, fw id: 3972349

> Dmitry Torokhov<dmitry.torokhov@gmail.com>
>      Input: rmi4 - refactor register descriptor parsing
> 
> Dmitry Torokhov<dmitry.torokhov@gmail.com>
>      Input: rmi4 - fix register descriptor address calculation

Both of these patches seem bad in my testing. Either one, individually,
causes the pointer to no longer move when I touch the touchpad. If I
revert both of them, then my touchpad works again.

I have not yet tested 7.0.14-rc1 or 6.18.37-rc1. However, the problem
also reproduces on current mainline as of this writing (commit
51cb1aa1250c36269474b8b6ca6b6319e170f5a5).

-- 
-Barry K. Nathan  <barryn@pobox.com>