[PATCH 13/24] make atomic_read() behave consistently on mips
From: Chris Snook <hidden>
Date: 2007-08-09 14:00:58
Also in:
linux-arch, lkml
From: Chris Snook <hidden>
Date: 2007-08-09 14:00:58
Also in:
linux-arch, lkml
From: Chris Snook <redacted> Purify volatile use for atomic[64]_t on mips. Signed-off-by: Chris Snook <redacted>
--- 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