diff --git a/include/linux/atomic.h b/include/linux/atomic.h
index df4f369254c0..3d64c0852164 100644
--- a/include/linux/atomic.h
+++ b/include/linux/atomic.h
@@ -558,6 +558,27 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 }
 #endif
 
+/**
+ * atomic_fetch_or - perform *p |= mask and return old value of *p
+ * @p: pointer to atomic_t
+ * @mask: mask to OR on the atomic_t
+ */
+#ifndef atomic_fetch_or
+static inline int atomic_fetch_or(atomic_t *p, int mask)
+{
+	int old, val = atomic_read(p);
+
+	for (;;) {
+		old = atomic_cmpxchg(p, val, val | mask);
+		if (old == val)
+			break;
+		val = old;
+	}
+
+	return old;
+}
+#endif
+
 /**
  * fetch_or - perform *ptr |= mask and return old value of *ptr
  * @ptr: pointer to value