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#ifndef _ALPHA_DMA_MAPPING_H #define _ALPHA_DMA_MAPPING_H extern const struct dma_map_ops *dma_ops; static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { return dma_ops; } #define dma_cache_sync(dev, va, size, dir) ((void)0) #endif /* _ALPHA_DMA_MAPPING_H */