X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sparc%2Fatomic.h;h=5c944b5a804003f5cc2a87b7972e5c22cd18ceb7;hb=73f1ad8670effa9849c3d42457fa2b58f139e013;hp=bdca5416d8b0a74dd998f3cbb8517839cc8b52d1;hpb=aba297927d1d558c7a94548135133bdf9172708a;p=linux-2.6-omap-h63xx.git

diff --git a/include/asm-sparc/atomic.h b/include/asm-sparc/atomic.h
index bdca5416d8b..5c944b5a804 100644
--- a/include/asm-sparc/atomic.h
+++ b/include/asm-sparc/atomic.h
@@ -1,6 +1,6 @@
 /* atomic.h: These still suck, but the I-cache hit rate is higher.
  *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
  * Copyright (C) 2000 Anton Blanchard (anton@linuxcare.com.au)
  * Copyright (C) 2007 Kyle McMartin (kyle@parisc-linux.org)
  *
@@ -17,42 +17,6 @@ typedef struct { volatile int counter; } atomic_t;
 
 #ifdef __KERNEL__
 
-/* Emulate cmpxchg() the same way we emulate atomics,
- * by hashing the object address and indexing into an array
- * of spinlocks to get a bit of performance...
- *
- * See arch/sparc/lib/atomic32.c for implementation.
- *
- * Cribbed from <asm-parisc/atomic.h>
- */
-#define __HAVE_ARCH_CMPXCHG	1
-
-/* bug catcher for when unsupported size is used - won't link */
-extern void __cmpxchg_called_with_bad_pointer(void);
-/* we only need to support cmpxchg of a u32 on sparc */
-extern unsigned long __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
-
-/* don't worry...optimizer will get rid of most of this */
-static __inline__ unsigned long
-__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)
-{
-	switch(size) {
-	case 4:
-		return __cmpxchg_u32((u32 *)ptr, (u32)old, (u32)new_);
-	default:
-		__cmpxchg_called_with_bad_pointer();
-		break;
-	}
-	return old;
-}
-
-#define cmpxchg(ptr,o,n) ({						\
-	__typeof__(*(ptr)) _o_ = (o);					\
-	__typeof__(*(ptr)) _n_ = (n);					\
-	(__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,	\
-			(unsigned long)_n_, sizeof(*(ptr)));		\
-})
-
 #define ATOMIC_INIT(i)  { (i) }
 
 extern int __atomic_add_return(int, atomic_t *);