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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _ASM_RISCV_MMIOWB_H
- #define _ASM_RISCV_MMIOWB_H
- /*
- * "o,w" is sufficient to ensure that all writes to the device have completed
- * before the write to the spinlock is allowed to commit.
- */
- #define mmiowb() __asm__ __volatile__ ("fence o,w" : : : "memory");
- #include <linux/smp.h>
- #include <asm-generic/mmiowb.h>
- #endif /* _ASM_RISCV_MMIOWB_H */
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