From 930e19248e9b61da36c967687ca79c4d5f977919 Mon Sep 17 00:00:00 2001 From: Marcos Paulo de Souza Date: Sat, 1 Oct 2016 12:07:35 -0700 Subject: 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 Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/serio/i8042-ip22io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/input/serio/i8042-ip22io.h') diff --git a/drivers/input/serio/i8042-ip22io.h b/drivers/input/serio/i8042-ip22io.h index ee1ad27d6ed0..08a1c10a1448 100644 --- a/drivers/input/serio/i8042-ip22io.h +++ b/drivers/input/serio/i8042-ip22io.h @@ -61,7 +61,7 @@ static inline int i8042_platform_init(void) return -EBUSY; #endif - i8042_reset = 1; + i8042_reset = I8042_RESET_ALWAYS; return 0; } -- cgit v1.2.3