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backlight/acpi: Update the backlight state when we change brightness

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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>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Matthew Garrett 2009-07-14 17:06:03 +01:00 committed by Richard Purdie
parent 325253a6b2
commit 36342742a3
1 changed files with 4 additions and 0 deletions
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drivers/acpi/video.c
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@ -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");