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openrisc: remove arch-specific dma_supported implementation 

This implementation is simply bogus - openrisc only has a simple
direct mapped DMA implementation and thus doesn't care about the
address.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2017-05-22 11:11:20 +02:00
parent 3d6119a4a1
commit 19ad53e498
1 changed files with 0 additions and 7 deletions
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7
arch/openrisc/include/asm/dma-mapping.h
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@ -33,11 +33,4 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
return &or1k_dma_map_ops;
}
#define HAVE_ARCH_DMA_SUPPORTED 1
static inline int dma_supported(struct device *dev, u64 dma_mask)
{
/* Support 32 bit DMA mask exclusively */
return dma_mask == DMA_BIT_MASK(32);
}
#endif /* __ASM_OPENRISC_DMA_MAPPING_H */