From b5643539b82559b858b8efe3fc8343f66cf9a0b5 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Mon, 12 Sep 2016 17:48:17 +0200 Subject: platform/x86: asus-wmi: Filter buggy scan codes on ASUS Q500A Some revisions of the ASUS Q500A series have a keyboard related issue which is reproducible only after Windows with installed ASUS tools is started. In this case the Linux side will have a blocked keyboard or report incorrect or incomplete hotkey events. To make Linux work properly again, a complete power down (unplug power supply and remove battery) is needed. Linux/atkbd after a clean start will get the following code on VOLUME_UP key: {0xe0, 0x30, 0xe0, 0xb0}. After Windows, the same key will generate this codes: {0xe1, 0x23, 0xe0, 0x30, 0xe0, 0xb0}. As result atkdb will be confused by buggy codes. This patch is filtering this buggy code out. https://bugzilla.kernel.org/show_bug.cgi?id=119391 Signed-off-by: Oleksij Rempel Cc: Alex Henrie Cc: Dmitry Torokhov Cc: Corentin Chary Cc: acpi4asus-user@lists.sourceforge.net Cc: platform-driver-x86@vger.kernel.org Cc: linux-kernel@vger.kernel.org [dvhart: Add return after pr_warn to avoid false confirmation of filter] Signed-off-by: Darren Hart --- drivers/platform/x86/asus-wmi.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/platform/x86/asus-wmi.h') diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h index 5e220411056d..0e19014e9f54 100644 --- a/drivers/platform/x86/asus-wmi.h +++ b/drivers/platform/x86/asus-wmi.h @@ -28,6 +28,7 @@ #define _ASUS_WMI_H_ #include +#include #define ASUS_WMI_KEY_IGNORE (-1) #define ASUS_WMI_BRN_DOWN 0x20 @@ -52,6 +53,9 @@ struct quirk_entry { * and let the ACPI interrupt to send out the key event. */ int no_display_toggle; + + bool (*i8042_filter)(unsigned char data, unsigned char str, + struct serio *serio); }; struct asus_wmi_driver { -- cgit v1.2.3