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Message-Id: <1437461324-7284-1-git-send-email-yamada.masahiro@socionext.com>
Date: Tue, 21 Jul 2015 15:48:44 +0900
From: Masahiro Yamada <yamada.masahiro@...ionext.com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>,
Russell King <linux@....linux.org.uk>,
linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: refactor bitops functions with BIT_MASK() and BIT_WORD()
Use BIT_MASK() and BIT_WORD() rather than hard-coding the size
of the "long" type.
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---
arch/arm/include/asm/bitops.h | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index 5638099..e943e6c 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -35,9 +35,9 @@
static inline void ____atomic_set_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
- unsigned long mask = 1UL << (bit & 31);
+ unsigned long mask = BIT_MASK(bit);
- p += bit >> 5;
+ p += BIT_WORD(bit);
raw_local_irq_save(flags);
*p |= mask;
@@ -47,9 +47,9 @@ static inline void ____atomic_set_bit(unsigned int bit, volatile unsigned long *
static inline void ____atomic_clear_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
- unsigned long mask = 1UL << (bit & 31);
+ unsigned long mask = BIT_MASK(bit);
- p += bit >> 5;
+ p += BIT_WORD(bit);
raw_local_irq_save(flags);
*p &= ~mask;
@@ -59,9 +59,9 @@ static inline void ____atomic_clear_bit(unsigned int bit, volatile unsigned long
static inline void ____atomic_change_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
- unsigned long mask = 1UL << (bit & 31);
+ unsigned long mask = BIT_MASK(bit);
- p += bit >> 5;
+ p += BIT_WORD(bit);
raw_local_irq_save(flags);
*p ^= mask;
@@ -73,9 +73,9 @@ ____atomic_test_and_set_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned int res;
- unsigned long mask = 1UL << (bit & 31);
+ unsigned long mask = BIT_MASK(bit);
- p += bit >> 5;
+ p += BIT_WORD(bit);
raw_local_irq_save(flags);
res = *p;
@@ -90,9 +90,9 @@ ____atomic_test_and_clear_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned int res;
- unsigned long mask = 1UL << (bit & 31);
+ unsigned long mask = BIT_MASK(bit);
- p += bit >> 5;
+ p += BIT_WORD(bit);
raw_local_irq_save(flags);
res = *p;
@@ -107,9 +107,9 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p)
{
unsigned long flags;
unsigned int res;
- unsigned long mask = 1UL << (bit & 31);
+ unsigned long mask = BIT_MASK(bit);
- p += bit >> 5;
+ p += BIT_WORD(bit);
raw_local_irq_save(flags);
res = *p;
--
1.9.1
--
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