--- zzzz-none-000/linux-3.10.107/drivers/hid/hid-picolcd_backlight.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/hid/hid-picolcd_backlight.c	2021-02-04 17:41:59.000000000 +0000
@@ -94,8 +94,7 @@
 	struct backlight_device *bdev = data->backlight;
 
 	data->backlight = NULL;
-	if (bdev)
-		backlight_device_unregister(bdev);
+	backlight_device_unregister(bdev);
 }
 
 int picolcd_resume_backlight(struct picolcd_data *data)