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Commit c9eb6172 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

dma-mapping: turn dma_cache_sync into a dma_map_ops method 



After we removed all the dead wood it turns out only two architectures
actually implement dma_cache_sync as a real op: mips and parisc.  Add
a cache_sync method to struct dma_map_ops and implement it for the
mips defualt DMA ops, and the parisc pa11 ops.

Note that arm, arc and openrisc support DMA_ATTR_NON_CONSISTENT, but
never provided a functional dma_cache_sync implementations, which
seems somewhat odd.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
parent e0c6584d

arch/alpha/include/asm/dma-mapping.h

+0 −2
Original line number Diff line number Diff line
@@ -8,6 +8,4 @@ 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 */

arch/cris/include/asm/dma-mapping.h

+0 −6
Original line number Diff line number Diff line
@@ -16,10 +16,4 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 
}

#endif



static inline void

dma_cache_sync(struct device *dev, void *vaddr, size_t size,

	       enum dma_data_direction direction)

{

}



#endif

arch/frv/include/asm/dma-mapping.h

+0 −6
Original line number Diff line number Diff line
@@ -14,10 +14,4 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 
	return &frv_dma_ops;

}



static inline

void dma_cache_sync(struct device *dev, void *vaddr, size_t size,

		    enum dma_data_direction direction)

{

}



#endif  /* _ASM_DMA_MAPPING_H */

arch/hexagon/include/asm/dma-mapping.h

+0 −3
Original line number Diff line number Diff line
@@ -37,9 +37,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 
	return dma_ops;

}



extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,

			   enum dma_data_direction direction);



static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)

{

	if (!dev->dma_mask)

arch/ia64/include/asm/dma-mapping.h

+0 −6
Original line number Diff line number Diff line
@@ -44,10 +44,4 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) 
	return daddr;

}



static inline void

dma_cache_sync (struct device *dev, void *vaddr, size_t size,

	enum dma_data_direction dir)

{

}



#endif /* _ASM_IA64_DMA_MAPPING_H */