From: Chris Snook <[EMAIL PROTECTED]>
Purify volatile use for atomic[64]_t on mips.
Signed-off-by: Chris Snook <[EMAIL PROTECTED]>
--- linux-2.6.23-rc2-orig/include/asm-mips/atomic.h 2007-08-08
17:48:53.000000000 -0400
+++ linux-2.6.23-rc2/include/asm-mips/atomic.h 2007-08-09 07:02:50.000000000
-0400
@@ -20,7 +20,7 @@
#include <asm/war.h>
#include <asm/system.h>
-typedef struct { volatile int counter; } atomic_t;
+typedef struct { int counter; } atomic_t;
#define ATOMIC_INIT(i) { (i) }
@@ -30,7 +30,7 @@ typedef struct { volatile int counter; }
*
* Atomically reads the value of @v.
*/
-#define atomic_read(v) ((v)->counter)
+#define atomic_read(v) (*(volatile int *)&(v)->counter)
/*
* atomic_set - set atomic variable
@@ -404,7 +404,7 @@ static __inline__ int atomic_add_unless(
#ifdef CONFIG_64BIT
-typedef struct { volatile long counter; } atomic64_t;
+typedef struct { long counter; } atomic64_t;
#define ATOMIC64_INIT(i) { (i) }
@@ -413,7 +413,7 @@ typedef struct { volatile long counter;
* @v: pointer of type atomic64_t
*
*/
-#define atomic64_read(v) ((v)->counter)
+#define atomic64_read(v) (*(volatile long *)&(v)->counter)
/*
* atomic64_set - set atomic variable
-
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