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x86/dma: Remove the x86_dma_fallback_dev hack

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Now that we removed support for the NULL device argument in the DMA API,
there is no need to cater for that in the x86 code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2018-12-21 14:32:02 +01:00
parent d7e02a9312
commit e43e2657fe
4 changed files with 0 additions and 43 deletions
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10
arch/x86/include/asm/dma-mapping.h
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@@ -13,14 +13,7 @@
#include <asm/swiotlb.h>
#include <linux/dma-contiguous.h>
#ifdef CONFIG_ISA
# define ISA_DMA_BIT_MASK DMA_BIT_MASK(24)
#else
# define ISA_DMA_BIT_MASK DMA_BIT_MASK(32)
#endif
extern int iommu_merge;
extern struct device x86_dma_fallback_dev;
extern int panic_on_overflow;
extern const struct dma_map_ops *dma_ops;
@@ -30,7 +23,4 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
return dma_ops;
}
bool arch_dma_alloc_attrs(struct device **dev);
#define arch_dma_alloc_attrs arch_dma_alloc_attrs
#endif