[PATCH 14/23] make atomic_read() and atomic_set() behavior consistent on mips

[Chris Snook]

From: Chris Snook <csnook@xxxxxxxxxx>

Use volatile consistently in atomic.h on mips.

Signed-off-by: Chris Snook <csnook@xxxxxxxxxx>

--- linux-2.6.23-rc3-orig/include/asm-mips/atomic.h	2007-08-13 03:14:13.000000000 -0400
+++ linux-2.6.23-rc3/include/asm-mips/atomic.h	2007-08-13 05:52:14.000000000 -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 +30,10 @@ typedef struct { volatile int counter; }
  *
  * Atomically reads the value of @v.
  */
-#define atomic_read(v)		((v)->counter)
+static __inline__ int atomic_read(atomic_t *v)
+{
+        return *(volatile int *)&v->counter;
+}
 
 /*
  * atomic_set - set atomic variable
@@ -39,7 +42,10 @@ typedef struct { volatile int counter; }
  *
  * Atomically sets the value of @v to @i.
  */
-#define atomic_set(v,i)		((v)->counter = (i))
+static __inline__ void atomic_set(atomic_t *v, int i)
+{
+        *(volatile int *)&v->counter = i;
+}
 
 /*
  * atomic_add - add integer to atomic variable
@@ -404,7 +410,7 @@ 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) }
 
@@ -413,14 +419,20 @@ typedef struct { volatile long counter; 
  * @v: pointer of type atomic64_t
  *
  */
-#define atomic64_read(v)	((v)->counter)
+static __inline__ long atomic64_read(atomic64_t *v)
+{
+        return *(volatile long *)&v->counter;
+}
 
 /*
  * atomic64_set - set atomic variable
  * @v: pointer of type atomic64_t
  * @i: required value
  */
-#define atomic64_set(v,i)	((v)->counter = (i))
+static __inline__ void atomic64_set(atomic64_t *v, long i)
+{
+        *(volatile long *)&v->counter = i;
+}
 
 /*
  * atomic64_add - add integer to atomic variable
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/