linux-kernel - Re: [PATCH 5.10 127/238] HID: lenovo: Add middleclick

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Date: Thu, 28 Mar 2024 13:14:13 +0200
From: Mikhail Khvoinitsky <me@...oinitsky.org>
To: Pavel Machek <pavel@...x.de>
Cc: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org, stable@...r.kernel.org, 
	Jiri Kosina <jkosina@...e.com>
Subject: Re: [PATCH 5.10 127/238] HID: lenovo: Add middleclick_workaround
 sysfs knob for cptkbd

Hi,
This patch is already on upstream. Unfortunately, previous backports
of related commits caused some issues so just skipping this one isn't
a good option.

For module parameters, while it's quite unrealistic for users to have
more than one identical keyboard but with different firmware, this is
possible and having a module option would prevent tuning only specific
keyboard.

For the documentation, makes sense. Sorry, I should have done it
together with the change, I'll fix it, thanks for pointing it out.

On Thu, 28 Mar 2024 at 12:40, Pavel Machek <pavel@...x.de> wrote:
>
> Hi!
>
> > From: Mikhail Khvainitski <me@...oinitsky.org>
> >
> > [ Upstream commit 2814646f76f8518326964f12ff20aaee70ba154d ]
> >
> > Previous attempt to autodetect well-behaving patched firmware
> > introduced in commit 46a0a2c96f0f ("HID: lenovo: Detect quirk-free fw
> > on cptkbd and stop applying workaround") has shown that there are
> > false-positives on original firmware (on both 1st gen and 2nd gen
> > keyboards) which causes the middle button click workaround to be
> > mistakenly disabled.
> >
> > This commit adds explicit parameter to sysfs to control this
> > workaround.
>
> Should this go to stable? We have stream of lenovo workarounds, maybe
> -stable should wait for upstream to solve this.
>
> Plus it should really have documentation.
>
> Oh and we normally solve this stuff with module parameters, so that it
> can be fixed during bootup.
>
> Best regards,
>                                                         Pavel
>
> > Fixes: 46a0a2c96f0f ("HID: lenovo: Detect quirk-free fw on cptkbd and stop applying workaround")
> > Fixes: 43527a0094c1 ("HID: lenovo: Restrict detection of patched firmware only to USB cptkbd")
> > Signed-off-by: Mikhail Khvainitski <me@...oinitsky.org>
> > Signed-off-by: Jiri Kosina <jkosina@...e.com>
> > Signed-off-by: Sasha Levin <sashal@...nel.org>
>
> --
> DENX Software Engineering GmbH,        Managing Director: Erika Unter
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany