PCI: layerscape: Add support for LS1043a and LS2080a

[karo-tx-linux.git] / Documentation / memory-barriers.txt

diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index eafa6a53f72cb142ffcec8f42ae604ff459786bc..2ba8461b0631de759fefd2a12918a6c4f4ee7562 100644 (file)
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -2327,9 +2327,7 @@ about the state (old or new) implies an SMP-conditional general memory barrier
 explicit lock operations, described later).  These include:
 
        xchg();
-       cmpxchg();
        atomic_xchg();                  atomic_long_xchg();
-       atomic_cmpxchg();               atomic_long_cmpxchg();
        atomic_inc_return();            atomic_long_inc_return();
        atomic_dec_return();            atomic_long_dec_return();
        atomic_add_return();            atomic_long_add_return();
@@ -2342,7 +2340,9 @@ explicit lock operations, described later).  These include:
        test_and_clear_bit();
        test_and_change_bit();
 
-       /* when succeeds (returns 1) */
+       /* when succeeds */
+       cmpxchg();
+       atomic_cmpxchg();               atomic_long_cmpxchg();
        atomic_add_unless();            atomic_long_add_unless();
 
 These are used for such things as implementing ACQUIRE-class and RELEASE-class