From: Chris Snook <[email protected]>
Use volatile consistently in atomic.h on alpha.
Leave sparc-internal atomic24_t type alone.
Signed-off-by: Chris Snook <[email protected]>
--- 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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