atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency

[linux-2.6-omap-h63xx.git] / include / asm-m68knommu / atomic.h

diff --git a/include/asm-m68knommu/atomic.h b/include/asm-m68knommu/atomic.h
index 6c4e4b63e45454f018e5f3bfc599a506bcaa4827..d5632a305dae8e992626dc7d79efc778805f5a51 100644 (file)
--- 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
@@ -131,14 +131,21 @@ 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))
 
-#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);                                               \
-})
+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_inc_not_zero(v) atomic_add_unless((v), 1, 0)
 
 #define atomic_dec_return(v) atomic_sub_return(1,(v))