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AMD IOMMU: __unmap_single: check for bad_dma_address instead of 0
Impact: minor fix Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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1 changed files with 2 additions and 1 deletions
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@ -983,7 +983,8 @@ static void __unmap_single(struct amd_iommu *iommu,
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dma_addr_t i, start;
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unsigned int pages;
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if ((dma_addr == 0) || (dma_addr + size > dma_dom->aperture_size))
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if ((dma_addr == bad_dma_address) ||
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(dma_addr + size > dma_dom->aperture_size))
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return;
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pages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
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