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x86: remove arch specific dma_supported implementation

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And instead wire it up as method for all the dma_map_ops instances.

Note that this also means the arch specific check will be fully instead
of partially applied in the AMD iommu driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2017-05-22 11:38:27 +02:00
parent 418a7a7e4f
commit 5860acc1a9
9 changed files with 13 additions and 11 deletions
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3
arch/x86/include/asm/dma-mapping.h
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@@ -33,9 +33,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);
#define arch_dma_alloc_attrs arch_dma_alloc_attrs
#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *hwdev, u64 mask);
extern void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag,
unsigned long attrs);