diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/video.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 3f685db1a76d..72e76b4b6538 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1981,6 +1981,10 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event) unsigned long long level_current, level_next; int result = -EINVAL; + /* no warning message if acpi_backlight=vendor is used */ + if (!acpi_video_backlight_support()) + return 0; + if (!device->brightness) goto out; |