linux-kernel - [PATCH 3/3] arm64: include: asm: atomic.h: use 'unsigned int' and 'atomic_t' instead of 'unsigned long' for atomic_clear

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Date:	Thu, 10 Oct 2013 10:35:21 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <will.deacon@....com>
CC:	linux390@...ibm.com, linux-s390@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] arm64: include: asm: atomic.h: use 'unsigned int' and
 'atomic_t' instead of 'unsigned long' for atomic_clear_mask()

In current kernel wide source, for arm64, only s390 scsi drivers use
atomic_clear_mask(), now, s390 itself need use 'unsigned int' and
'atomic_t', so need match s390's atomic_clear_mask().


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 arch/arm64/include/asm/atomic.h |   13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/include/asm/atomic.h b/arch/arm64/include/asm/atomic.h
index 8363644..58808fc 100644
--- a/arch/arm64/include/asm/atomic.h
+++ b/arch/arm64/include/asm/atomic.h
@@ -126,16 +126,17 @@ static inline int atomic_cmpxchg(atomic_t *ptr, int old, int new)
 	return oldval;
 }
 
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+static inline void atomic_clear_mask(unsigned int mask, atomic_t *ptr)
 {
-	unsigned long tmp, tmp2;
+	unsigned int tmp;
+	unsigned long tmp2;
 
 	asm volatile("// atomic_clear_mask\n"
-"1:	ldxr	%0, %2\n"
-"	bic	%0, %0, %3\n"
-"	stxr	%w1, %0, %2\n"
+"1:	ldxr	%w0, %2\n"
+"	bic	%w0, %w0, %w3\n"
+"	stxr	%w1, %w0, %2\n"
 "	cbnz	%w1, 1b"
-	: "=&r" (tmp), "=&r" (tmp2), "+Q" (*addr)
+	: "=&r" (tmp), "=&r" (tmp2), "+Q" (ptr->counter)
 	: "Ir" (mask)
 	: "cc");
 }
-- 
1.7.7.6
--
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