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authorLinus Torvalds <torvalds@linux-foundation.org>2018-09-02 20:09:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-09-02 20:09:36 -0700
commit60c1f89241d49bacf71035470684a8d7b4bb46ea (patch)
treef545bc7a0ddd189b956e65353f36661f4fc12ae1 /kernel
parent57361846b52bc686112da6ca5368d11210796804 (diff)
parent8c89ef7b6b64ba093239305f77a485905d03f7bf (diff)
downloadlinux-60c1f89241d49bacf71035470684a8d7b4bb46ea.tar.bz2
Merge tag 'dma-mapping-4.19-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig: "A few fixes for the fallout of being a little more pedantic about dma masks" * tag 'dma-mapping-4.19-2' of git://git.infradead.org/users/hch/dma-mapping: of/platform: initialise AMBA default DMA masks sparc: set a default 32-bit dma mask for OF devices kernel/dma/direct: take DMA offset into account in dma_direct_supported
Diffstat (limited to 'kernel')
-rw-r--r--kernel/dma/direct.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 1c35b7b945d0..de87b0282e74 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -168,7 +168,7 @@ int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
int dma_direct_supported(struct device *dev, u64 mask)
{
#ifdef CONFIG_ZONE_DMA
- if (mask < DMA_BIT_MASK(ARCH_ZONE_DMA_BITS))
+ if (mask < phys_to_dma(dev, DMA_BIT_MASK(ARCH_ZONE_DMA_BITS)))
return 0;
#else
/*
@@ -177,7 +177,7 @@ int dma_direct_supported(struct device *dev, u64 mask)
* memory, or by providing a ZONE_DMA32. If neither is the case, the
* architecture needs to use an IOMMU instead of the direct mapping.
*/
- if (mask < DMA_BIT_MASK(32))
+ if (mask < phys_to_dma(dev, DMA_BIT_MASK(32)))
return 0;
#endif
/*