1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-ia64/sn/xp.h b/include/asm-ia64/sn/xp.h
index 203945ae034e..9bd2f9bf329b 100644
--- a/include/asm-ia64/sn/xp.h
+++ b/include/asm-ia64/sn/xp.h
@@ -18,6 +18,7 @@
 
 #include <linux/cache.h>
 #include <linux/hardirq.h>
+#include <linux/mutex.h>
 #include <asm/sn/types.h>
 #include <asm/sn/bte.h>
 
@@ -359,7 +360,7 @@ typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
  * the channel.
  */
 struct xpc_registration {
-        struct semaphore sema;
+        struct mutex mutex;
         xpc_channel_func func;          /* function to call */
         void *key;                      /* pointer to user's key */
         u16 nentries;                   /* #of msg entries in local msg queue */