Messages in this thread Patch in this message | | | Date | Mon, 13 Aug 2007 07:09:46 -0400 | From | Chris Snook <> | Subject | [PATCH 3/23] make atomic_read() and atomic_set() behavior consistent on arm |
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From: Chris Snook <csnook@redhat.com>
Use volatile consistently in atomic.h on arm.
Signed-off-by: Chris Snook <csnook@redhat.com>
--- linux-2.6.23-rc3-orig/include/asm-arm/atomic.h 2007-07-08 19:32:17.000000000 -0400 +++ linux-2.6.23-rc3/include/asm-arm/atomic.h 2007-08-13 04:44:50.000000000 -0400 @@ -14,13 +14,16 @@ #include <linux/compiler.h> #include <asm/system.h> -typedef struct { volatile int counter; } atomic_t; +typedef struct { int counter; } atomic_t; #define ATOMIC_INIT(i) { (i) } #ifdef __KERNEL__ -#define atomic_read(v) ((v)->counter) +static inline int atomic_read(atomic_t *v) +{ + return *(volatile int *)&v->counter; +} #if __LINUX_ARM_ARCH__ >= 6 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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