tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel / arch / riscv / include / asm / mmiowb.h
at v5.2-rc6 14 lines 374 B view raw
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 <asm-generic/mmiowb.h> 13 14#endif /* ASM_RISCV_MMIOWB_H */