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ia64/sba_iommu: remove the mapping_error dma_map_ops method 

Return DMA_MAPPING_ERROR instead of 0 on a dma mapping failure and let
the core dma-mapping code handle the rest.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2018-11-21 19:16:38 +01:00
parent 52aee3e83d
commit 07256950cd
1 changed files with 1 additions and 7 deletions
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8
arch/ia64/hp/common/sba_iommu.c
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@ -974,7 +974,7 @@ static dma_addr_t sba_map_page(struct device *dev, struct page *page,
pide = sba_alloc_range(ioc, dev, size);
if (pide < 0)
return 0;
return DMA_MAPPING_ERROR;
iovp = (dma_addr_t) pide << iovp_shift;
@ -2155,11 +2155,6 @@ static int sba_dma_supported (struct device *dev, u64 mask)
return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL);
}
static int sba_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
__setup("nosbagart", nosbagart);
static int __init
@ -2193,7 +2188,6 @@ const struct dma_map_ops sba_dma_ops = {
.map_sg = sba_map_sg_attrs,
.unmap_sg = sba_unmap_sg_attrs,
.dma_supported = sba_dma_supported,
.mapping_error = sba_dma_mapping_error,
};
void sba_dma_init(void)