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ARM: 8417/1: refactor bitops functions with BIT_MASK() and BIT_WORD()

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Use BIT_MASK() and BIT_WORD() rather than hard-coding the size
of the "long" type.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Masahiro Yamada 2015-08-17 03:59:52 +01:00 • committed by Russell King
parent da4f295b4a
commit 8901925d32
1 changed files with 12 additions and 12 deletions
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24
arch/arm/include/asm/bitops.h
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@ -35,9 +35,9 @@
static inline void ____atomic_set_bit(unsigned int bit, volatile unsigned long *p) static inline void ____atomic_set_bit(unsigned int bit, volatile unsigned long *p)
{ {
unsigned long flags; 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); raw_local_irq_save(flags);
*p |= mask; *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) static inline void ____atomic_clear_bit(unsigned int bit, volatile unsigned long *p)
{ {
unsigned long flags; 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); raw_local_irq_save(flags);
*p &= ~mask; *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) static inline void ____atomic_change_bit(unsigned int bit, volatile unsigned long *p)
{ {
unsigned long flags; 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); raw_local_irq_save(flags);
*p ^= mask; *p ^= mask;
@ -73,9 +73,9 @@ ____atomic_test_and_set_bit(unsigned int bit, volatile unsigned long *p)
{ {
unsigned long flags; unsigned long flags;
unsigned int res; 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); raw_local_irq_save(flags);
res = *p; res = *p;
@ -90,9 +90,9 @@ ____atomic_test_and_clear_bit(unsigned int bit, volatile unsigned long *p)
{ {
unsigned long flags; unsigned long flags;
unsigned int res; 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); raw_local_irq_save(flags);
res = *p; res = *p;
@ -107,9 +107,9 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p)
{ {
unsigned long flags; unsigned long flags;
unsigned int res; 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); raw_local_irq_save(flags);
res = *p; res = *p;