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Diffstat (limited to 'arch/avr32/include/asm/barrier.h')
-rw-r--r--arch/avr32/include/asm/barrier.h17
1 files changed, 5 insertions, 12 deletions
diff --git a/arch/avr32/include/asm/barrier.h b/arch/avr32/include/asm/barrier.h
index 0961275373db..715100790fd0 100644
--- a/arch/avr32/include/asm/barrier.h
+++ b/arch/avr32/include/asm/barrier.h
@@ -8,22 +8,15 @@
8#ifndef __ASM_AVR32_BARRIER_H 8#ifndef __ASM_AVR32_BARRIER_H
9#define __ASM_AVR32_BARRIER_H 9#define __ASM_AVR32_BARRIER_H
10 10
11#define nop() asm volatile("nop") 11/*
12 12 * Weirdest thing ever.. no full barrier, but it has a write barrier!
13#define mb() asm volatile("" : : : "memory") 13 */
14#define rmb() mb() 14#define wmb() asm volatile("sync 0" : : : "memory")
15#define wmb() asm volatile("sync 0" : : : "memory")
16#define read_barrier_depends() do { } while(0)
17#define set_mb(var, value) do { var = value; mb(); } while(0)
18 15
19#ifdef CONFIG_SMP 16#ifdef CONFIG_SMP
20# error "The AVR32 port does not support SMP" 17# error "The AVR32 port does not support SMP"
21#else
22# define smp_mb() barrier()
23# define smp_rmb() barrier()
24# define smp_wmb() barrier()
25# define smp_read_barrier_depends() do { } while(0)
26#endif 18#endif
27 19
20#include <asm-generic/barrier.h>
28 21
29#endif /* __ASM_AVR32_BARRIER_H */ 22#endif /* __ASM_AVR32_BARRIER_H */