--- /dev/null
+--- 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,
+ };