diff options
Diffstat (limited to 'backport-include/asm/barrier.h')
| -rw-r--r-- | backport-include/asm/barrier.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/backport-include/asm/barrier.h b/backport-include/asm/barrier.h new file mode 100644 index 0000000..9e1e1f1 --- /dev/null +++ b/backport-include/asm/barrier.h @@ -0,0 +1,22 @@ +#ifndef __BACKPORT_ASM_BARRIER_H +#define __BACKPORT_ASM_BARRIER_H + +#include <linux/version.h> +#if LINUX_VERSION_IS_GEQ(3,4,0) || \ + defined(CONFIG_ALPHA) || defined(CONFIG_MIPS) +#include_next <asm/barrier.h> +#endif /* >= 3.4 */ + +#ifndef dma_rmb +#define dma_rmb() rmb() +#endif + +#ifndef dma_wmb +#define dma_wmb() wmb() +#endif + +#ifndef smp_mb__after_atomic +#define smp_mb__after_atomic smp_mb__after_clear_bit +#endif + +#endif /* __BACKPORT_ASM_BARRIER_H */ |