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authorChristoph Hellwig <hch@lst.de>2018-11-21 19:35:19 +0100
committerChristoph Hellwig <hch@lst.de>2018-12-06 06:56:48 -0800
commitcad34be747b8a92146e71c8267f2c1d6794e34c0 (patch)
tree638d7404b8b08119c27472d92156d6a43212c0dc /arch/arm64/mm
parent524a669bdd5ff45cb927f0c524ed4e7a4fb3650b (diff)
downloadlinux-cad34be747b8a92146e71c8267f2c1d6794e34c0.tar.bz2
iommu/dma-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>
Diffstat (limited to 'arch/arm64/mm')
-rw-r--r--arch/arm64/mm/dma-mapping.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 3c2c088a3562..4c0f498069e8 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -233,7 +233,7 @@ static void *__iommu_alloc_attrs(struct device *dev, size_t size,
return NULL;
*handle = iommu_dma_map_page(dev, page, 0, iosize, ioprot);
- if (iommu_dma_mapping_error(dev, *handle)) {
+ if (*handle == DMA_MAPPING_ERROR) {
if (coherent)
__free_pages(page, get_order(size));
else
@@ -250,7 +250,7 @@ static void *__iommu_alloc_attrs(struct device *dev, size_t size,
return NULL;
*handle = iommu_dma_map_page(dev, page, 0, iosize, ioprot);
- if (iommu_dma_mapping_error(dev, *handle)) {
+ if (*handle == DMA_MAPPING_ERROR) {
dma_release_from_contiguous(dev, page,
size >> PAGE_SHIFT);
return NULL;
@@ -410,7 +410,7 @@ static dma_addr_t __iommu_map_page(struct device *dev, struct page *page,
dma_addr_t dev_addr = iommu_dma_map_page(dev, page, offset, size, prot);
if (!coherent && !(attrs & DMA_ATTR_SKIP_CPU_SYNC) &&
- !iommu_dma_mapping_error(dev, dev_addr))
+ dev_addr != DMA_MAPPING_ERROR)
__dma_map_area(page_address(page) + offset, size, dir);
return dev_addr;
@@ -493,7 +493,6 @@ static const struct dma_map_ops iommu_dma_ops = {
.sync_sg_for_device = __iommu_sync_sg_for_device,
.map_resource = iommu_dma_map_resource,
.unmap_resource = iommu_dma_unmap_resource,
- .mapping_error = iommu_dma_mapping_error,
};
static int __init __iommu_dma_init(void)