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authorChen Gang <gang.chen@asianux.com>2013-05-27 19:57:01 +0800
committerChris Zankel <chris@zankel.net>2013-06-05 10:14:21 -0700
commitb5514786ec3257c8703fc7f29bdf98b42253ee39 (patch)
treefec532fa34662e03e2582d19783f49ca2ae11e75 /arch/xtensa
parent54c0af9f1a1bfe9639666aea789dae6a37a741cf (diff)
downloadlinux-b5514786ec3257c8703fc7f29bdf98b42253ee39.tar.gz
arch: xtensa: include: asm: compiling issue, need cmpxchg64() defined.
When compiling with 'allmodconfig', some of drivers need cmpxchg64(), xtensa does not supply 64-bit implementation for 'xchg', so use the 'generic' implementation. e.g. (for next-20130527 tree): drivers/block/blockconsole.c:164:2: error: implicit declaration of function ‘cmpxchg64’ [-Werror=implicit-function-declaration] Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/cmpxchg.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/cmpxchg.h b/arch/xtensa/include/asm/cmpxchg.h
index d9ab131bc1a..370b26f3841 100644
--- a/arch/xtensa/include/asm/cmpxchg.h
+++ b/arch/xtensa/include/asm/cmpxchg.h
@@ -93,6 +93,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
(unsigned long)(n), sizeof(*(ptr))))
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
/*
* xchg_u32