diff mbox

[2/3] ACPI: Update the backlight state when we change brightness

Message ID 1247587564-27737-2-git-send-email-mjg@redhat.com (mailing list archive)
State Accepted
Headers show

Commit Message

Matthew Garrett July 14, 2009, 4:06 p.m. UTC
Trigger a status update when we change the brightness in the driver, thus
allowing userspace to present appropriate UI.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
---
 drivers/acpi/video.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 8851315..2c906c7 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1960,6 +1960,10 @@  acpi_video_switch_brightness(struct acpi_video_device *device, int event)
 
 	result = acpi_video_device_lcd_set_level(device, level_next);
 
+	if (!result)
+		backlight_force_update(device->backlight,
+				       BACKLIGHT_UPDATE_HOTKEY);
+
 out:
 	if (result)
 		printk(KERN_ERR PREFIX "Failed to switch the brightness\n");