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dma-mapping: make the get_required_mask method available unconditionally

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This save some duplication for ia64, and makes the interface more
general.  In the long run we want each dma_map_ops instance to fill this
out, but this will take a little more prep work.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Christoph Hellwig 2018-09-06 19:27:24 -04:00
parent b733116fea
commit c6d4381220
9 changed files with 13 additions and 48 deletions
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2
include/linux/dma-mapping.h
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@ -130,9 +130,7 @@ struct dma_map_ops {
enum dma_data_direction direction);
int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
int (*dma_supported)(struct device *dev, u64 mask);
#ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK
u64 (*get_required_mask)(struct device *dev);
#endif
};
extern const struct dma_map_ops dma_direct_ops;