#ifndef _ASM_GENERIC_DMA_MAPPING_H#define _ASM_GENERIC_DMA_MAPPING_H /* This is used for archs that do not support DMA */  static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,		   gfp_t flag){	BUG();	return NULL;} static inline voiddma_free_coherent(struct device *dev, size_t size, void *cpu_addr,		    dma_addr_t dma_handle){	BUG();} #endif /* _ASM_GENERIC_DMA_MAPPING_H */