Merge with http://kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 12 insertions, 0 deletions

diff --git a/include/asm-m68knommu/atomic.h b/include/asm-m68knommu/atomic.h
index a83631ed8c8f..3c1cc153c415 100644
--- a/include/asm-m68knommu/atomic.h
+++ b/include/asm-m68knommu/atomic.h
@@ -128,6 +128,18 @@ static inline int atomic_sub_return(int i, atomic_t * v)
 	return temp;
 }
 
+#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic_inc_return(v) atomic_add_return(1,(v))