[PATCH 5/23] make atomic_read() and atomic_set() behavior consistent on blackfin

From: Chris Snook
Date: Mon Aug 13 2007 - 10:12:30 EST


From: Chris Snook <csnook@xxxxxxxxxx>

Use volatile consistently in atomic.h on blackfin.

Signed-off-by: Chris Snook <csnook@xxxxxxxxxx>

--- linux-2.6.23-rc3-orig/include/asm-blackfin/atomic.h 2007-07-08 19:32:17.000000000 -0400
+++ linux-2.6.23-rc3/include/asm-blackfin/atomic.h 2007-08-13 05:21:07.000000000 -0400
@@ -18,8 +18,15 @@ typedef struct {
} atomic_t;
#define ATOMIC_INIT(i) { (i) }

-#define atomic_read(v) ((v)->counter)
-#define atomic_set(v, i) (((v)->counter) = i)
+static inline int atomic_read(atomic_t *v)
+{
+ return *(volatile int *)&v->counter;
+}
+
+static inline void atomic_set(atomic_t *v, int i)
+{
+ *(volatile int *)&v->counter = i;
+}

static __inline__ void atomic_add(int i, atomic_t * v)
{
-
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