diff --git a/[refs] b/[refs]
index 0796bd64b8c1..212bb6bf08d7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 49bca4c2815feafd5f999bf43baf87e0dd8d1d08
+refs/heads/master: 5964eae835c3b98c69d338950651f7f414f96477
diff --git a/trunk/arch/arm/kernel/entry-armv.S b/trunk/arch/arm/kernel/entry-armv.S
index f248bbfe745f..964cd717506b 100644
--- a/trunk/arch/arm/kernel/entry-armv.S
+++ b/trunk/arch/arm/kernel/entry-armv.S
@@ -709,7 +709,12 @@ __kuser_memory_barrier:				@ 0xffff0fa0
  * The C flag is also set if *ptr was changed to allow for assembly
  * optimization in the calling code.
  *
- * Note: this routine already includes memory barriers as needed.
+ * Notes:
+ *
+ *    - This routine already includes memory barriers as needed.
+ *
+ *    - A failure might be transient, i.e. it is possible, although unlikely,
+ *      that "failure" be returned even if *ptr == oldval.
  *
  * For example, a user space atomic_add implementation could look like this:
  *