This is a note to let you know that I've just added the patch titled
thinkpad-acpi: fix issuing duplicated key events for brightness up/down
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
thinkpad-acpi-fix-issuing-duplicated-key-events-for-brightness-up-down.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ff413195e830541afeae469fc866ecd0319abd7e Mon Sep 17 00:00:00 2001
From: Alex Hung <alex.hung@xxxxxxxxxxxxx>
Date: Tue, 24 Apr 2012 16:40:52 +0800
Subject: thinkpad-acpi: fix issuing duplicated key events for brightness up/down
From: Alex Hung <alex.hung@xxxxxxxxxxxxx>
commit ff413195e830541afeae469fc866ecd0319abd7e upstream.
The tp_features.bright_acpimode will not be set correctly for brightness
control because ACPI_VIDEO_HID will not be located in ACPI. As a result,
a duplicated key event will always be sent. acpi_video_backlight_support()
is sufficient to detect standard ACPI brightness control.
Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx>
Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx>
Cc: Andreas Sturmlechner <andreas.sturmlechner@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -3402,7 +3402,7 @@ static int __init hotkey_init(struct ibm
/* Do not issue duplicate brightness change events to
* userspace. tpacpi_detect_brightness_capabilities() must have
* been called before this point */
- if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
+ if (acpi_video_backlight_support()) {
pr_info("This ThinkPad has standard ACPI backlight "
"brightness control, supported by the ACPI "
"video driver\n");
Patches currently in stable-queue which might be from alex.hung@xxxxxxxxxxxxx are
queue-3.4/thinkpad-acpi-fix-issuing-duplicated-key-events-for-brightness-up-down.patch
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