--- a/drivers/watchdog/ar2315-wtd.c
+++ b/drivers/watchdog/ar2315-wtd.c
@@ -132,7 +132,7 @@ static struct file_operations ar2315_wdt
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= ar2315_wdt_write,
-	.ioctl		= ar2315_wdt_ioctl,
+	.unlocked_ioctl	= ar2315_wdt_ioctl,
 	.open		= ar2315_wdt_open,
 	.release	= ar2315_wdt_release,
 };
