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authorZhang Rui <rui.zhang@intel.com>2008-12-31 10:58:48 +0800
committerLen Brown <len.brown@intel.com>2008-12-30 23:39:43 -0500
commit9e6dada9d255497127251c03aaa59296d186f959 (patch)
treeed1cb1773685211758ae88d41f80f8df9146afaf
parent11e93130c7ce5228d484fd5e86f3984835d4256b (diff)
video: always update the brightness when poking "brightness"
always update props.brightness no matter the backlight is changed via procfs, hotkeys or sysfs. Sighed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/video.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index baa44192972..66a610d0e2f 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -481,6 +481,7 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
int status = AE_OK;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
+ int state;
arg0.integer.value = level;
@@ -489,6 +490,10 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
status = acpi_evaluate_object(device->dev->handle, "_BCM",
&args, NULL);
device->brightness->curr = level;
+ for (state = 2; state < device->brightness->count; state++)
+ if (level == device->brightness->levels[state])
+ device->backlight->props.brightness = state - 2;
+
return status;
}