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thinkpad-acpi: fix issuing duplicated key events for brightness up/down 

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@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
hifive-unleashed-5.1
Alex Hung 2012-04-24 16:40:52 +08:00 committed by Matthew Garrett
parent 96960880c3
commit ff413195e8
1 changed files with 1 additions and 1 deletions
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2
drivers/platform/x86/thinkpad_acpi.c
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@ -3402,7 +3402,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
/* 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");