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hexagon: remove arch-specific dma_supported implementation

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

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Richard Kuo <rkuo@codeaurora.org>
This commit is contained in:
Christoph Hellwig 2017-05-22 11:07:48 +02:00
parent 3be6d9b6da
commit a2b63aa2f4
2 changed files with 0 additions and 11 deletions
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2
arch/hexagon/include/asm/dma-mapping.h
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@ -37,8 +37,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
return dma_ops;
}
#define HAVE_ARCH_DMA_SUPPORTED 1
extern int dma_supported(struct device *dev, u64 mask);
extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction);

9
arch/hexagon/kernel/dma.c
View File

@ -35,15 +35,6 @@ static inline void *dma_addr_to_virt(dma_addr_t dma_addr)
return phys_to_virt((unsigned long) dma_addr);
}
int dma_supported(struct device *dev, u64 mask)
{
if (mask == DMA_BIT_MASK(32))
return 1;
else
return 0;
}
EXPORT_SYMBOL(dma_supported);
static struct gen_pool *coherent_pool;