Always update the props.brightness
whenever the ACPI video backlight is changed.
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
---
drivers/acpi/video.c | 5 +++++
1 file changed, 5 insertions(+)
Index: linux-2.6/drivers/acpi/video.c
===================================================================
--- linux-2.6.orig/drivers/acpi/video.c
+++ linux-2.6/drivers/acpi/video.c
@@ -481,6 +481,7 @@ acpi_video_device_lcd_set_level(struct a
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 a
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;
}
--
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