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Date: Mon, 27 May 2013 19:57:01 +0800 From: Chen Gang <gang.chen@...anux.com> To: chris@...kel.net, jcmvbkbc@...il.com CC: linux-xtensa@...ux-xtensa.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Linux-Arch <linux-arch@...r.kernel.org> Subject: [PATCH] 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@...anux.com> --- arch/xtensa/include/asm/cmpxchg.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/xtensa/include/asm/cmpxchg.h b/arch/xtensa/include/asm/cmpxchg.h index d9ab131..370b26f 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 -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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