From 1512cdc3572dac34a1809764f9a646cde7e82407 Mon Sep 17 00:00:00 2001
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Sun, 1 Apr 2012 16:38:41 -0400
Subject: [PATCH] blackfin: fix cmpxchg build fails from system.h fallout
Commit 3bed8d67469c ("Disintegrate asm/system.h for Blackfin [ver #2]")
introduced arch/blackfin/include/asm/cmpxchg.h but has it also including
the asm-generic one which causes this:
CC arch/blackfin/kernel/asm-offsets.s
In file included from arch/blackfin/include/asm/cmpxchg.h:125:0,
from arch/blackfin/include/asm/atomic.h:10,
from include/linux/atomic.h:4,
from include/linux/spinlock.h:384,
from include/linux/seqlock.h:29,
from include/linux/time.h:8,
from include/linux/timex.h:56,
from include/linux/sched.h:57,
from arch/blackfin/kernel/asm-offsets.c:10:
include/asm-generic/cmpxchg.h:24:15: error: redefinition of '__xchg'
arch/blackfin/include/asm/cmpxchg.h:82:29: note: previous definition of '__xchg' was here
make[2]: *** [arch/blackfin/kernel/asm-offsets.s] Error 1
It really only needs two simple defines from asm-generic, so just use
those instead.
Cc: Bob Liu <lliubbo@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
arch/blackfin/include/asm/cmpxchg.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/blackfin/include/asm/cmpxchg.h b/arch/blackfin/include/asm/cmpxchg.h
index ba2484f4cb2a..c05868cc61c1 100644
--- a/arch/blackfin/include/asm/cmpxchg.h
+++ b/arch/blackfin/include/asm/cmpxchg.h
@@ -122,7 +122,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
(unsigned long)(n), sizeof(*(ptr))))
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-#include <asm-generic/cmpxchg.h>
+#define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n))
+#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
#endif /* !CONFIG_SMP */
--
2.20.1