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| author | Marcos Paulo de Souza <marcos.souza.org@gmail.com> | 2016-10-01 21:07:35 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-10-12 01:58:25 +0200 |
| commit | 930e19248e9b61da36c967687ca79c4d5f977919 (patch) | |
| tree | 40a11f8280090ffe6e5cc97b8283f6458d48874d /Documentation/x86 | |
| parent | Input: melfas_mip4 - add ic_name sysfs attribute (diff) | |
| download | linux-930e19248e9b61da36c967687ca79c4d5f977919.tar.xz linux-930e19248e9b61da36c967687ca79c4d5f977919.zip | |
Input: i8042 - skip selftest on ASUS laptops
On suspend/resume cycle, selftest is executed to reset i8042 controller.
But when this is done in Asus devices, subsequent calls to detect/init
functions to elantech driver fails. Skipping selftest fixes this problem.
An easier step to reproduce this problem is adding i8042.reset=1 as a
kernel parameter. On Asus laptops, it'll make the system to start with the
touchpad already stuck, since psmouse_probe forcibly calls the selftest
function.
This patch was inspired by John Hiesey's change[1], but, since this problem
affects a lot of models of Asus, let's avoid running selftests on them.
All models affected by this problem:
A455LD
K401LB
K501LB
K501LX
R409L
V502LX
X302LA
X450LCP
X450LD
X455LAB
X455LDB
X455LF
Z450LA
[1]: https://marc.info/?l=linux-input&m=144312209020616&w=2
Fixes: "ETPS/2 Elantech Touchpad dies after resume from suspend"
(https://bugzilla.kernel.org/show_bug.cgi?id=107971)
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/x86')
0 files changed, 0 insertions, 0 deletions