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parisc: __cmpxchg_u32(): lift conversion into the callers

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__cmpxchg_u32() return value is unsigned int explicitly cast to
unsigned long.  Both callers are returns from functions that
return unsigned long; might as well have __cmpxchg_u32()
return that unsigned int (aka u32) and let the callers convert
implicitly.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Al Viro 2024-04-01 22:22:50 -04:00 committed by Paul E. McKenney
parent dbc93fdcdc
commit 29b8e53c12
2 changed files with 4 additions and 5 deletions
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3
arch/parisc/include/asm/cmpxchg.h
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@ -57,8 +57,7 @@ __arch_xchg(unsigned long x, volatile void *ptr, int size)
extern void __cmpxchg_called_with_bad_pointer(void);
/* __cmpxchg_u32/u64 defined in arch/parisc/lib/bitops.c */
extern unsigned long __cmpxchg_u32(volatile unsigned int *m, unsigned int old,
unsigned int new_);
extern u32 __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
extern u64 __cmpxchg_u64(volatile u64 *ptr, u64 old, u64 new_);
extern u8 __cmpxchg_u8(volatile u8 *ptr, u8 old, u8 new_);

6
arch/parisc/lib/bitops.c
View file

@ -68,16 +68,16 @@ u64 notrace __cmpxchg_u64(volatile u64 *ptr, u64 old, u64 new)
return prev;
}
unsigned long notrace __cmpxchg_u32(volatile unsigned int *ptr, unsigned int old, unsigned int new)
u32 notrace __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
{
unsigned long flags;
unsigned int prev;
u32 prev;
_atomic_spin_lock_irqsave(ptr, flags);
if ((prev = *ptr) == old)
*ptr = new;
_atomic_spin_unlock_irqrestore(ptr, flags);
return (unsigned long)prev;
return prev;
}
u8 notrace __cmpxchg_u8(volatile u8 *ptr, u8 old, u8 new)