diff options
| author | Christoph Hellwig <[email protected]> | 2018-04-09 11:15:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2018-04-09 18:20:09 +0200 |
| commit | 66bdb1478fd1a66d5b8b81e4e28e0ed3df63ed37 (patch) | |
| tree | 1e561dbd5fc4f7c4cfa12786328fc8dbbffac236 | |
| parent | 9a3b7e5e65c4b4d332df5f607c0838c3fb918673 (diff) | |
swiotlb: Use dma_direct_supported() for swiotlb_ops
swiotlb_alloc() calls dma_direct_alloc(), which can satisfy lower than 32-bit
DMA mask requests using GFP_DMA if the architecture supports it. Various
x86 drivers rely on that, so we need to support that. At the same time
the whole kernel expects a 32-bit DMA mask to just work, so the other magic
in swiotlb_dma_supported() isn't actually needed either.
Reported-by: Dominik Brodowski <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Fixes: 6e4bf5867783 ("x86/dma: Use generic swiotlb_ops")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | lib/swiotlb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index c43ec2271469..c67b06261160 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -1130,6 +1130,6 @@ const struct dma_map_ops swiotlb_dma_ops = { .unmap_sg = swiotlb_unmap_sg_attrs, .map_page = swiotlb_map_page, .unmap_page = swiotlb_unmap_page, - .dma_supported = swiotlb_dma_supported, + .dma_supported = dma_direct_supported, }; #endif /* CONFIG_DMA_DIRECT_OPS */ |