3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Hung <alex.h...@canonical.com>
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.h...@canonical.com>
Signed-off-by: Matthew Garrett <m...@redhat.com>
Cc: Andreas Sturmlechner <andreas.sturmlech...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
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");
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
