diff options
| author |   Christoph Hellwig <hch@lst.de> | 2018-08-16 15:30:39 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-10-19 08:43:46 +0200 |
| commit | dff8d6c1ed584de65aac40494d3e7468c50980c3 (patch) | |
| tree | 998f71d7b0951479f511df2ac236eaf850120a06 /include/linux/swiotlb.h | |
| parent | swiotlb: do not panic on mapping failures (diff) | |
| download | linux-dev-dff8d6c1ed584de65aac40494d3e7468c50980c3.tar.xz linux-dev-dff8d6c1ed584de65aac40494d3e7468c50980c3.zip | |
swiotlb: remove the overflow buffer
Like all other dma mapping drivers just return an error code instead
of an actual memory buffer. The reason for the overflow buffer was
that at the time swiotlb was invented there was no way to check for
dma mapping errors, but this has long been fixed.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/linux/swiotlb.h')
| -rw-r--r-- | include/linux/swiotlb.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 7ef541ce8f34..f847c1b265c4 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -107,9 +107,6 @@ swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, int nelems, enum dma_data_direction dir); extern int -swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr); - -extern int swiotlb_dma_supported(struct device *hwdev, u64 mask); #ifdef CONFIG_SWIOTLB |