diff options
Diffstat (limited to 'drivers/acpi/acpi_video.c')
| -rw-r--r-- | drivers/acpi/acpi_video.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index 3405f7a41e25..2a649f3edefb 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -2072,6 +2072,18 @@ void acpi_video_unregister_backlight(void) mutex_unlock(®ister_count_mutex); } +bool acpi_video_handles_brightness_key_presses(void) +{ + bool have_video_busses; + + mutex_lock(&video_list_lock); + have_video_busses = !list_empty(&video_bus_head); + mutex_unlock(&video_list_lock); + + return have_video_busses; +} +EXPORT_SYMBOL(acpi_video_handles_brightness_key_presses); + /* * This is kind of nasty. Hardware using Intel chipsets may require * the video opregion code to be run first in order to initialise |