ps3: gelic: updown_lock semaphore to mutex

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Acked-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/ps3_gelic_net.h b/drivers/net/ps3_gelic_net.h
index 520f143..8b41386 100644
--- a/drivers/net/ps3_gelic_net.h
+++ b/drivers/net/ps3_gelic_net.h
@@ -298,7 +298,7 @@
 	wait_queue_head_t waitq;
 
 	/* only first user should up the card */
-	struct semaphore updown_lock;
+	struct mutex updown_lock;
 	atomic_t users;
 
 	u64 ether_port_status;