mirror of https://gitee.com/openkylin/linux.git
arm64: remove the dummy_dma_ops mapping_error method
Just return DMA_MAPPING_ERROR from __dummy_map_page 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>
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@ -119,7 +119,7 @@ static dma_addr_t __dummy_map_page(struct device *dev, struct page *page,
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enum dma_data_direction dir,
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unsigned long attrs)
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{
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return 0;
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return DMA_MAPPING_ERROR;
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}
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static void __dummy_unmap_page(struct device *dev, dma_addr_t dev_addr,
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@ -154,11 +154,6 @@ static void __dummy_sync_sg(struct device *dev,
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{
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}
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static int __dummy_mapping_error(struct device *hwdev, dma_addr_t dma_addr)
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{
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return 1;
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}
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static int __dummy_dma_supported(struct device *hwdev, u64 mask)
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{
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return 0;
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@ -176,7 +171,6 @@ const struct dma_map_ops dummy_dma_ops = {
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.sync_single_for_device = __dummy_sync_single,
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.sync_sg_for_cpu = __dummy_sync_sg,
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.sync_sg_for_device = __dummy_sync_sg,
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.mapping_error = __dummy_mapping_error,
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.dma_supported = __dummy_dma_supported,
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};
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EXPORT_SYMBOL(dummy_dma_ops);
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