diff --git a/[refs] b/[refs]
index cf85f07e44ae..5a821a975e17 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 29f742f88a32c9ab8cf6d9ba69e1ea918be5aa58
+refs/heads/master: 55c2945aa9d4d907ec5ca4f6a4e30ae908d8d30d
diff --git a/trunk/include/linux/atomic.h b/trunk/include/linux/atomic.h
index 96c038e43d66..ee456c79b0e6 100644
--- a/trunk/include/linux/atomic.h
+++ b/trunk/include/linux/atomic.h
@@ -34,4 +34,17 @@ static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint)
 }
 #endif
 
+#ifndef CONFIG_ARCH_HAS_ATOMIC_OR
+static inline void atomic_or(int i, atomic_t *v)
+{
+	int old;
+	int new;
+
+	do {
+		old = atomic_read(v);
+		new = old | i;
+	} while (atomic_cmpxchg(v, old, new) != old);
+}
+#endif /* #ifndef CONFIG_ARCH_HAS_ATOMIC_OR */
+
 #endif /* _LINUX_ATOMIC_H */