linux-kernel - [regression] Resume broken on T14s Gen1 (AMD) due to "Input: psmouse - add delay when deactivating for SMBus mode"

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Message-ID: <ca0109fa-c64b-43c1-a651-75b294d750a1@leemhuis.info>
Date:   Wed, 27 Sep 2023 10:54:17 +0200
From:   Thorsten Leemhuis <linux@...mhuis.info>
To:     Jeffery Miller <jefferymiller@...gle.com>
Cc:     Andrew Duggan <aduggan@...aptics.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linux kernel regressions list <regressions@...ts.linux.dev>
Subject: [regression] Resume broken on T14s Gen1 (AMD) due to "Input: psmouse
 - add delay when deactivating for SMBus mode"

Hi Jeffery! Your change 92e24e0e57f72e ("Input: psmouse - add delay when
deactivating for SMBus mode") [merged for v6.6-rc1] broke resume on my
T14s Gen1 (AMD): the system didn't really resume again at all (the
display almost always didn't re-initialize) and there was nothing in the
logs. I found your commit to be the culprit using a bisection and
confirmed that reverting it on top of Linux 6.6-rc3 makes thing work
again for me.

My dmesg from a kernel with the revert:
https://www.leemhuis.info/files/misc/dmesg

My config:
https://www.leemhuis.info/files/misc/config

Funny detail: this is the full-blown Fedora rawhide config, apart from
disabling UCSI (it caused another problem that was fixed after -rc1); I
first had tried to use localmodconfig to strip down the config, but then
the problem did not happen for some reason (or I did something stupid).

Ciao, Thorsten

#regzbot introduced 92e24e0e57f72e
#regzbot title Input: psmouse - Resume broken on T14s Gen1 (AMD) due to
a new delay when deactivating for SMBus mode