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powerpc/iommu: remove the mapping_error dma_map_ops method

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The powerpc iommu code already returns (~(dma_addr_t)0x0) on mapping
failures, so we can switch over to returning DMA_MAPPING_ERROR 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 18:56:25 +01:00
parent 72fd97bf4e
commit d11e3d3d03
5 changed files with 15 additions and 27 deletions
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arch/powerpc/platforms/cell/iommu.c
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@@ -654,7 +654,6 @@ static const struct dma_map_ops dma_iommu_fixed_ops = {
.dma_supported = dma_suported_and_switch,
.map_page = dma_fixed_map_page,
.unmap_page = dma_fixed_unmap_page,
.mapping_error = dma_iommu_mapping_error,
};
static void cell_dma_dev_setup(struct device *dev)