diff --git a/target/linux/ar71xx/patches-2.6.36/209_watchdog_fix.patch b/target/linux/ar71xx/patches-2.6.36/209_watchdog_fix.patch
new file mode 100644
index 0000000000..f0f37f41ea
--- /dev/null
+++ b/target/linux/ar71xx/patches-2.6.36/209_watchdog_fix.patch
@@ -0,0 +1,11 @@
+--- a/drivers/watchdog/ar71xx_wdt.c
++++ b/drivers/watchdog/ar71xx_wdt.c
+@@ -197,7 +197,7 @@ static int ar71xx_wdt_ioctl(struct inode
+ static const struct file_operations ar71xx_wdt_fops = {
+ 	.owner		= THIS_MODULE,
+ 	.write		= ar71xx_wdt_write,
+-	.ioctl		= ar71xx_wdt_ioctl,
++	.unlocked_ioctl	= ar71xx_wdt_ioctl,
+ 	.open		= ar71xx_wdt_open,
+ 	.release	= ar71xx_wdt_release,
+ };