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| author |  Christoph Hellwig <hch@lst.de>
| 2019-11-19 17:38:58 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de>
| 2019-11-20 20:31:41 +0100 |
| commit | 68a33b1794665ba8a1d1ef1d3bfcc7c587d380a6 (patch) | |
| tree | fa623a6dfd451c161630422aafd0bec2fe486285 /kernel/dma/swiotlb.c | |
| parent | dma-direct: don't check swiotlb=force in dma_direct_map_resource (diff) | |
| download | linux-68a33b1794665ba8a1d1ef1d3bfcc7c587d380a6.tar.gz linux-68a33b1794665ba8a1d1ef1d3bfcc7c587d380a6.tar.bz2 linux-68a33b1794665ba8a1d1ef1d3bfcc7c587d380a6.zip | |
dma-direct: exclude dma_direct_map_resource from the min_low_pfn check
The valid memory address check in dma_capable only makes sense when mapping
normal memory, not when using dma_map_resource to map a device resource.
Add a new boolean argument to dma_capable to exclude that check for the
dma_map_resource case.
Fixes: b12d66278dd6 ("dma-direct: check for overflows on 32 bit DMA addresses")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'kernel/dma/swiotlb.c')
| -rw-r--r-- | kernel/dma/swiotlb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 673a2cdb2656..9280d6f8271e 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -678,7 +678,7 @@ bool swiotlb_map(struct device *dev, phys_addr_t *phys, dma_addr_t *dma_addr, /* Ensure that the address returned is DMA'ble */ *dma_addr = __phys_to_dma(dev, *phys); - if (unlikely(!dma_capable(dev, *dma_addr, size))) { + if (unlikely(!dma_capable(dev, *dma_addr, size, true))) { swiotlb_tbl_unmap_single(dev, *phys, size, size, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC); return false; |