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ARM: 7868/1: arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h" 

In current kernel wide source code, except other architectures, only
s390 scsi drivers use atomic_clear_mask(), and arm/arm64 need not
support s390 drivers.

So remove atomic_clear_mask() from "arm[64]/include/asm/atomic.h".

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Chen Gang 2013-10-26 15:07:41 +01:00 committed by Russell King
parent 4dcc1cf731
commit aed3a4ed72
2 changed files with 0 additions and 38 deletions
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24
arch/arm/include/asm/atomic.h
View File

@ -135,21 +135,6 @@ 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)
{
unsigned long tmp, tmp2;
__asm__ __volatile__("@ atomic_clear_mask\n"
"1: ldrex %0, [%3]\n"
" bic %0, %0, %4\n"
" strex %1, %0, [%3]\n"
" teq %1, #0\n"
" bne 1b"
: "=&r" (tmp), "=&r" (tmp2), "+Qo" (*addr)
: "r" (addr), "Ir" (mask)
: "cc");
}
#else /* ARM_ARCH_6 */
#ifdef CONFIG_SMP
@ -198,15 +183,6 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
return ret;
}
static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
{
unsigned long flags;
raw_local_irq_save(flags);
*addr &= ~mask;
raw_local_irq_restore(flags);
}
#endif /* __LINUX_ARM_ARCH__ */
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))

14
arch/arm64/include/asm/atomic.h
View File

@ -126,20 +126,6 @@ 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)
{
unsigned long tmp, tmp2;
asm volatile("// atomic_clear_mask\n"
"1: ldxr %0, %2\n"
" bic %0, %0, %3\n"
" stxr %w1, %0, %2\n"
" cbnz %w1, 1b"
: "=&r" (tmp), "=&r" (tmp2), "+Q" (*addr)
: "Ir" (mask)
: "cc");
}
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
static inline int __atomic_add_unless(atomic_t *v, int a, int u)