From: Zhang Rui <rui.zhang@xxxxxxxxx>
always update props.brightness no matter the backlight is changed
via procfs, hotkeys or sysfs.
Sighed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Acked-by: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/video.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index baa4419..66a610d 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;
}
--
1.5.6.6
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