arch/avr32/include/asm/barrier.h

   1 /*
   2  * Copyright (C) 2004-2006 Atmel Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8 #ifndef __ASM_AVR32_BARRIER_H
   9 #define __ASM_AVR32_BARRIER_H
  10
  11 /*
  12  * Weirdest thing ever.. no full barrier, but it has a write barrier!
  13  */
  14 #define wmb()   asm volatile("sync 0" : : : "memory")
  15
  16 #ifdef CONFIG_SMP
  17 # error "The AVR32 port does not support SMP"
  18 #endif
  19
  20 #include <asm-generic/barrier.h>
  21
  22 #endif /* __ASM_AVR32_BARRIER_H */