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Diffstat (limited to 'arch/powerpc/include/asm/atomic.h')
-rw-r--r--arch/powerpc/include/asm/atomic.h19
1 files changed, 7 insertions, 12 deletions
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index b8f152ece025..e2a4c26ad377 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -181,21 +181,21 @@ static __inline__ int atomic_dec_return(atomic_t *v)
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
- * atomic_add_unless - add unless the number is a given value
+ * __atomic_add_unless - add unless the number is a given value
* @v: pointer of type atomic_t
* @a: the amount to add to v...
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as it was not @u.
- * Returns non-zero if @v was not @u, and zero otherwise.
+ * Returns the old value of @v.
*/
-static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
{
int t;
__asm__ __volatile__ (
PPC_RELEASE_BARRIER
-"1: lwarx %0,0,%1 # atomic_add_unless\n\
+"1: lwarx %0,0,%1 # __atomic_add_unless\n\
cmpw 0,%0,%3 \n\
beq- 2f \n\
add %0,%2,%0 \n"
@@ -209,10 +209,9 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
: "r" (&v->counter), "r" (a), "r" (u)
: "cc", "memory");
- return t != u;
+ return t;
}
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_sub_and_test(a, v) (atomic_sub_return((a), (v)) == 0)
#define atomic_dec_and_test(v) (atomic_dec_return((v)) == 0)
@@ -444,7 +443,7 @@ static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as it was not @u.
- * Returns non-zero if @v was not @u, and zero otherwise.
+ * Returns the old value of @v.
*/
static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
{
@@ -452,7 +451,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
__asm__ __volatile__ (
PPC_RELEASE_BARRIER
-"1: ldarx %0,0,%1 # atomic_add_unless\n\
+"1: ldarx %0,0,%1 # __atomic_add_unless\n\
cmpd 0,%0,%3 \n\
beq- 2f \n\
add %0,%2,%0 \n"
@@ -470,11 +469,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
-#else /* __powerpc64__ */
-#include <asm-generic/atomic64.h>
-
#endif /* __powerpc64__ */
-#include <asm-generic/atomic-long.h>
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_ATOMIC_H_ */