---
 include/linux/semaphore.h |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux-2.6/include/linux/semaphore.h
===================================================================
--- linux-2.6.orig/include/linux/semaphore.h
+++ linux-2.6/include/linux/semaphore.h
@@ -41,7 +41,11 @@ struct semaphore {
 
 static inline void sema_init(struct semaphore *sem, int val)
 {
+	static struct lock_class_key __key;
+
 	*sem = (struct semaphore) __SEMAPHORE_INITIALIZER(*sem, val);
+
+	lockdep_init_map(&sem->lock.dep_map, "semaphore->lock", &__key, 0);
 }
 
 #define init_MUTEX(sem)		sema_init(sem, 1)