diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 9d7d8c6..fa2cb76 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -40,7 +40,7 @@
 
 	unsigned long rx_flags;
 	spinlock_t rx_lock;
-	struct mutex dev_lock;
+	struct semaphore dev_lock;
 	struct list_head rx_np; /* netpolls that registered an rx_hook */
 
 	struct sk_buff_head neigh_tx; /* list of neigh requests to reply to */