linux-kernel - [PATCH] arch: x86: include: asm: need 'unsigned' type cast for atomic_clear

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Message-ID: <51B2CF75.1090207@asianux.com>
Date:	Sat, 08 Jun 2013 14:30:13 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	the arch/x86 maintainers <x86@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>, shli@...ionio.com,
	"dhowells@...hat.com" <dhowells@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: [PATCH] arch: x86: include: asm: need 'unsigned' type cast for atomic_clear_mask()


atomic_set_mask() has already have 'unsigned' type case, and
atomic_clear_mask() is the pair of atomic_set_mask().

So it also need 'unsigned' type case.


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 arch/x86/include/asm/atomic.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h
index 722aa3b..5b5cf52 100644
--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -255,7 +255,7 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
 /* These are x86-specific, used by some header files */
 #define atomic_clear_mask(mask, addr)				\
 	asm volatile(LOCK_PREFIX "andl %0,%1"			\
-		     : : "r" (~(mask)), "m" (*(addr)) : "memory")
+		     : : "r" (~(unsigned)(mask)), "m" (*(addr)) : "memory")
 
 #define atomic_set_mask(mask, addr)				\
 	asm volatile(LOCK_PREFIX "orl %0,%1"			\
-- 
1.7.7.6
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