arch: Cleanup read_barrier_depends() and comments

[deliverable/linux.git] / arch / ia64 / include / asm / barrier.h

diff --git a/arch/ia64/include/asm/barrier.h b/arch/ia64/include/asm/barrier.h
index a48957c7b445a2ad08a22d6bc7911b5d2d6049f0..e8fffb03963c7f7aebc69b5dfb9dae7ea75191d1 100644 (file)
--- a/arch/ia64/include/asm/barrier.h
+++ b/arch/ia64/include/asm/barrier.h
@@ -35,26 +35,22 @@
  * it's (presumably) much slower than mf and (b) mf.a is supported for
  * sequential memory pages only.
  */
-#define mb()   ia64_mf()
-#define rmb()  mb()
-#define wmb()  mb()
-#define read_barrier_depends() do { } while(0)
+#define mb()           ia64_mf()
+#define rmb()          mb()
+#define wmb()          mb()
 
 #ifdef CONFIG_SMP
 # define smp_mb()      mb()
-# define smp_rmb()     rmb()
-# define smp_wmb()     wmb()
-# define smp_read_barrier_depends()    read_barrier_depends()
-
 #else
-
 # define smp_mb()      barrier()
-# define smp_rmb()     barrier()
-# define smp_wmb()     barrier()
-# define smp_read_barrier_depends()    do { } while(0)
-
 #endif
 
+#define smp_rmb()      smp_mb()
+#define smp_wmb()      smp_mb()
+
+#define read_barrier_depends()         do { } while (0)
+#define smp_read_barrier_depends()     do { } while (0)
+
 #define smp_mb__before_atomic()        barrier()
 #define smp_mb__after_atomic() barrier()