From mboxrd@z Thu Jan 1 00:00:00 1970 From: gang.chen@asianux.com (Chen Gang) Date: Mon, 22 Apr 2013 13:08:41 +0800 Subject: [PATCH] ARM64: kernel: compiling issue, define cmpxchg64 and cmpxchg64_local for outside using. In-Reply-To: <2182812.ymprEm6XBb@wuerfel> References: <51712E5E.2020809@asianux.com> <201304191412.54601.arnd@arndb.de> <5171FD67.2080104@asianux.com> <2182812.ymprEm6XBb@wuerfel> Message-ID: <5174C5D9.3060109@asianux.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org drivers use cmpxchg64, cmpxchg64_local ... to perform 64-bit operation, so they can cross 32-bit and 64-bit platforms (it is a standard way). Signed-off-by: Chen Gang --- arch/arm64/include/asm/cmpxchg.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h index 968b5cb..8a8ce0e 100644 --- a/arch/arm64/include/asm/cmpxchg.h +++ b/arch/arm64/include/asm/cmpxchg.h @@ -170,4 +170,7 @@ static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old, (unsigned long)(n), \ sizeof(*(ptr)))) +#define cmpxchg64(ptr,o,n) cmpxchg((ptr),(o),(n)) +#define cmpxchg64_local(ptr,o,n) cmpxchg_local((ptr),(o),(n)) + #endif /* __ASM_CMPXCHG_H */ -- 1.7.7.6