[PATCH 20/23] make atomic_read() and atomic_set() behavior consistent on sparc

[Chris Snook]

From: Chris Snook <csnook@xxxxxxxxxx>

Use volatile consistently in atomic.h on alpha.
Leave sparc-internal atomic24_t type alone.

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

--- linux-2.6.23-rc3-orig/include/asm-sparc/atomic.h	2007-07-08 19:32:17.000000000 -0400
+++ linux-2.6.23-rc3/include/asm-sparc/atomic.h	2007-08-13 06:12:49.000000000 -0400
@@ -13,7 +13,7 @@
 
 #include <linux/types.h>
 
-typedef struct { volatile int counter; } atomic_t;
+typedef struct { int counter; } atomic_t;
 
 #ifdef __KERNEL__
 
@@ -61,7 +61,10 @@ extern int atomic_cmpxchg(atomic_t *, in
 extern int atomic_add_unless(atomic_t *, int, int);
 extern void atomic_set(atomic_t *, int);
 
-#define atomic_read(v)          ((v)->counter)
+static inline int atomic_read(atomic_t *v)
+{
+        return *(volatile int *)&v->counter;
+}
 
 #define atomic_add(i, v)	((void)__atomic_add_return( (int)(i), (v)))
 #define atomic_sub(i, v)	((void)__atomic_add_return(-(int)(i), (v)))
-
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