diff options
Diffstat (limited to 'arch/m68k/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/m68k/include/asm/cmpxchg.h | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/arch/m68k/include/asm/cmpxchg.h b/arch/m68k/include/asm/cmpxchg.h index 6cf464cdab06..71fbe5c5c564 100644 --- a/arch/m68k/include/asm/cmpxchg.h +++ b/arch/m68k/include/asm/cmpxchg.h @@ -3,36 +3,31 @@ #define __ARCH_M68K_CMPXCHG__ #include <linux/irqflags.h> +#include <linux/minmax.h> #define __xg(type, x) ((volatile type *)(x)) extern unsigned long __invalid_xchg_size(unsigned long, volatile void *, int); #ifndef CONFIG_RMW_INSNS -static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) +static inline unsigned long __arch_xchg(unsigned long x, volatile void * ptr, int size) { - unsigned long flags, tmp; + unsigned long flags; local_irq_save(flags); switch (size) { case 1: - tmp = *(u8 *)ptr; - *(u8 *)ptr = x; - x = tmp; + swap(*(u8 *)ptr, x); break; case 2: - tmp = *(u16 *)ptr; - *(u16 *)ptr = x; - x = tmp; + swap(*(u16 *)ptr, x); break; case 4: - tmp = *(u32 *)ptr; - *(u32 *)ptr = x; - x = tmp; + swap(*(u32 *)ptr, x); break; default: - tmp = __invalid_xchg_size(x, ptr, size); + x = __invalid_xchg_size(x, ptr, size); break; } @@ -40,7 +35,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz return x; } #else -static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) +static inline unsigned long __arch_xchg(unsigned long x, volatile void * ptr, int size) { switch (size) { case 1: @@ -75,7 +70,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz } #endif -#define arch_xchg(ptr,x) ({(__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));}) +#define arch_xchg(ptr,x) ({(__typeof__(*(ptr)))__arch_xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));}) #include <asm-generic/cmpxchg-local.h> |