X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-m68knommu%2Fatomic.h;h=d5632a305dae8e992626dc7d79efc778805f5a51;hb=eda3d8f5604860aae1bb9996bb5efc4213778369;hp=1702dbe9318c12c774b81439f6c32075ea99487d;hpb=25da0974601fc8096461f3d3f7ca3aab8e79adfb;p=linux-2.6

diff --git a/include/asm-m68knommu/atomic.h b/include/asm-m68knommu/atomic.h
index 1702dbe931..d5632a305d 100644
--- a/include/asm-m68knommu/atomic.h
+++ b/include/asm-m68knommu/atomic.h
@@ -1,7 +1,7 @@
 #ifndef __ARCH_M68KNOMMU_ATOMIC__
 #define __ARCH_M68KNOMMU_ATOMIC__
 
-#include <asm/system.h>	/* local_irq_XXX() */
+#include <asm/system.h>
 
 /*
  * Atomic operations that C can't guarantee us.  Useful for
@@ -129,15 +129,23 @@ static inline int atomic_sub_return(int i, atomic_t * v)
 }
 
 #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int c, old;
+	c = atomic_read(v);
+	for (;;) {
+		if (unlikely(c == (u)))
+			break;
+		old = atomic_cmpxchg((v), c, c + (a));
+		if (likely(old == c))
+			break;
+		c = old;
+	}
+	return c != (u);
+}
 
-#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))