[PATCH 18/23] make atomic_read() and atomic_set() behavior consistent on sh

From: Chris Snook <[email protected]>

Use volatile consistently in atomic.h on sh.

Signed-off-by: Chris Snook <[email protected]>

--- linux-2.6.23-rc3-orig/include/asm-sh/atomic.h	2007-07-08 19:32:17.000000000 -0400
+++ linux-2.6.23-rc3/include/asm-sh/atomic.h	2007-08-13 06:07:16.000000000 -0400
@@ -7,12 +7,19 @@
  *
  */
 
-typedef struct { volatile int counter; } atomic_t;
+typedef struct { int counter; } atomic_t;
 
 #define ATOMIC_INIT(i)	( (atomic_t) { (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;
+}
 
 #include <linux/compiler.h>
 #include <asm/system.h>
-
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    • From: Chris Snook <[email protected]>

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