From: Chris Snook <[email protected]>
Purify volatile use for atomic_t on xtensa.
Signed-off-by: Chris Snook <[email protected]>
--- linux-2.6.23-rc2-orig/include/asm-xtensa/atomic.h 2007-07-08 19:32:17.000000000 -0400
+++ linux-2.6.23-rc2/include/asm-xtensa/atomic.h 2007-08-09 07:54:59.000000000 -0400
@@ -15,7 +15,7 @@
#include <linux/stringify.h>
-typedef struct { volatile int counter; } atomic_t;
+typedef struct { int counter; } atomic_t;
#ifdef __KERNEL__
#include <asm/processor.h>
@@ -47,7 +47,7 @@ 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
-
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