@@ -290,24 +290,26 @@ static int taal_bl_update_status(struct backlight_device *dev)
dev_dbg(&dssdev->dev, "update brightness to %d\n", level);
+ mutex_lock(&td->lock);
+
if (td->use_dsi_bl) {
if (td->enabled) {
dsi_bus_lock();
r = taal_dcs_write_1(DCS_BRIGHTNESS, level);
dsi_bus_unlock();
- if (r)
- return r;
+ } else {
+ r = 0;
}
} else {
if (!dssdev->set_backlight)
- return -EINVAL;
-
- r = dssdev->set_backlight(dssdev, level);
- if (r)
- return r;
+ r = -EINVAL;
+ else
+ r = dssdev->set_backlight(dssdev, level);
}
- return 0;
+ mutex_unlock(&td->lock);
+
+ return r;
}
static int taal_bl_get_intensity(struct backlight_device *dev)