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Merge "dma-mapping-fast: Remap contiguous pages only when needed"

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qctecmdr 2020-01-15 09:19:32 -08:00 • committed by Gerrit - the friendly Code Review server
commit bbdf78dca9
1 changed files with 10 additions and 5 deletions
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15
drivers/iommu/dma-mapping-fast.c
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@ -630,13 +630,18 @@ static void *__fast_smmu_alloc_contiguous(struct device *dev, size_t size,
size, prot))
goto release_iova;
coherent_addr = dma_common_contiguous_remap(page, size, remap_prot,
if (!is_coherent || PageHighMem(page)) {
coherent_addr = dma_common_contiguous_remap(page, size,
remap_prot,
__fast_smmu_alloc_contiguous);
if (!coherent_addr)
goto release_mapping;
if (!coherent_addr)
goto release_mapping;
if (!is_coherent)
__dma_flush_area(page_to_virt(page), size);
if (!is_coherent)
__dma_flush_area(page_to_virt(page), size);
} else {
coherent_addr = page_address(page);
}
*handle = iova;
return coherent_addr;