LXR linux/arch/riscv/include/asm/mmiowb.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3#ifndef _ASM_RISCV_MMIOWB_H
   4#define _ASM_RISCV_MMIOWB_H
   5
   6/*
   7 * "o,w" is sufficient to ensure that all writes to the device have completed
   8 * before the write to the spinlock is allowed to commit.
   9 */
  10#define mmiowb()        __asm__ __volatile__ ("fence o,w" : : : "memory");
  11
  12#include <linux/smp.h>
  13#include <asm-generic/mmiowb.h>
  14
  15#endif  /* _ASM_RISCV_MMIOWB_H */
  16