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Input: i8042 - add ThinkPad S230u to i8042 reset list

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On the Lenovo ThinkPad Twist S230u (3347-4HU) with BIOS version
"GDETC1WW (1.81 ) 06/27/2019", the keyboard, Synaptics TouchPad, and
TrackPoint either do not function or stop functioning a few minutes
after boot.  This problem has been noted before, perhaps only occurring
with BIOS 1.57 and later.[1][2][3][4][5]

Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
and although the [BIOS changelog] notes "Fixed an issue of UEFI
touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
insufficient.

Setting i8042.reset=1 or adding 33474HU to the reset list avoids the
issue on my system from either warm or cold boot.

[1]: https://bugs.launchpad.net/bugs/1210748
[2]: https://bbs.archlinux.org/viewtopic.php?pid=1360425
[3]: https://forums.linuxmint.com/viewtopic.php?f=46&t=41200
[4]: https://forums.linuxmint.com/viewtopic.php?f=49&t=157115
[5]: https://forums.lenovo.com/topic/findpost/27/1337119
[BIOS changelog]: https://download.lenovo.com/pccbbs/mobiles/gduj33uc.txt

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/94f384b0f75f90f71425d7dce7ac82c59ddb87a8.1587702636.git.kevin@kevinlocke.name
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Kevin Locke 2020-04-27 18:07:20 -07:00 committed by Dmitry Torokhov
parent f4dec2d616
commit 2712c91a54
1 changed files with 7 additions and 0 deletions
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7
drivers/input/serio/i8042-x86ia64io.h
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@ -662,6 +662,13 @@ static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
},
},
{
/* Lenovo ThinkPad Twist S230u */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "33474HU"),
},
},
{ }
};