if (ctrls[LED_MODE]->val != V4L2_FLASH_LED_MODE_TORCH)
                        return;
 
-               led_set_brightness(&v4l2_flash->fled_cdev->led_cdev,
+               led_set_brightness_sync(&v4l2_flash->fled_cdev->led_cdev,
                                        brightness);
        } else {
-               led_set_brightness(&v4l2_flash->iled_cdev->led_cdev,
+               led_set_brightness_sync(&v4l2_flash->iled_cdev->led_cdev,
                                        brightness);
        }
 }
        case V4L2_CID_FLASH_LED_MODE:
                switch (c->val) {
                case V4L2_FLASH_LED_MODE_NONE:
-                       led_set_brightness(led_cdev, LED_OFF);
+                       led_set_brightness_sync(led_cdev, LED_OFF);
                        return led_set_flash_strobe(fled_cdev, false);
                case V4L2_FLASH_LED_MODE_FLASH:
                        /* Turn the torch LED off */
-                       led_set_brightness(led_cdev, LED_OFF);
+                       led_set_brightness_sync(led_cdev, LED_OFF);
                        if (ctrls[STROBE_SOURCE]) {
                                external_strobe = (ctrls[STROBE_SOURCE]->val ==
                                        V4L2_FLASH_STROBE_SOURCE_EXTERNAL);