Commit db4268f8 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

dma-mapping: move valid_dma_direction to dma-direction.h 



Move the valid_dma_direction helper to a more suitable header, and
clean it up to use the proper enum as well as removing pointless braces.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 7ae10eb9

include/linux/dma-direction.h

+7 −1
Original line number Diff line number Diff line
@@ -9,4 +9,10 @@ enum dma_data_direction { 
	DMA_NONE = 3,

};



#endif
 
static inline int valid_dma_direction(enum dma_data_direction dir)

{

	return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE ||

		dir == DMA_FROM_DEVICE;

}



#endif /* _LINUX_DMA_DIRECTION_H */

include/linux/dma-mapping.h

+0 −7
Original line number Diff line number Diff line
@@ -138,13 +138,6 @@ extern const struct dma_map_ops dma_dummy_ops; 


#define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))



static inline int valid_dma_direction(int dma_direction)

{

	return ((dma_direction == DMA_BIDIRECTIONAL) ||

		(dma_direction == DMA_TO_DEVICE) ||

		(dma_direction == DMA_FROM_DEVICE));

}



#ifdef CONFIG_DMA_DECLARE_COHERENT

/*

 * These three functions are only for dma allocator.