diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index d7a3d13..b85983e 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -173,6 +173,7 @@
 		data->max_brightness--;
 	}
 
+	data->enable_gpio = -EINVAL;
 	return 0;
 }