1 files changed, 6 insertions, 5 deletions

diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index afbb0d4cc305..b08d56b117f8 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -5,6 +5,7 @@
 
 #include <linux/skbuff.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -26,19 +27,19 @@ static int ipip_xfrm_rcv(struct xfrm_state *x, struct xfrm_decap_state *decap, s
 }
 
 static struct xfrm_tunnel *ipip_handler;
-static DECLARE_MUTEX(xfrm4_tunnel_sem);
+static DEFINE_MUTEX(xfrm4_tunnel_mutex);
 
 int xfrm4_tunnel_register(struct xfrm_tunnel *handler)
 {
         int ret;
 
-        down(&xfrm4_tunnel_sem);
+        mutex_lock(&xfrm4_tunnel_mutex);
         ret = 0;
         if (ipip_handler != NULL)
                 ret = -EINVAL;
         if (!ret)
                 ipip_handler = handler;
-        up(&xfrm4_tunnel_sem);
+        mutex_unlock(&xfrm4_tunnel_mutex);
 
         return ret;
 }
@@ -49,13 +50,13 @@ int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler)
 {
         int ret;
 
-        down(&xfrm4_tunnel_sem);
+        mutex_lock(&xfrm4_tunnel_mutex);
         ret = 0;
         if (ipip_handler != handler)
                 ret = -EINVAL;
         if (!ret)
                 ipip_handler = NULL;
-        up(&xfrm4_tunnel_sem);
+        mutex_unlock(&xfrm4_tunnel_mutex);
 
         synchronize_net();