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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-12 11:00:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-12 11:00:48 -0700
commitc5c177c5fd952720d6b659f596d6eb9be59c9000 (patch)
treea26d9064a7fbba1780467a8d97e882de263c0636 /lib
parentd1cb7718cfe3a464189cb3d1ee2c092565bc8b39 (diff)
parent9e7f06c8beee304ee21b791653fefcd713f48b9a (diff)
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Merge tag 'dma-mapping-4.17-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig: "Fix for one swiotlb regression in 2.16 from Takashi" * tag 'dma-mapping-4.17-2' of git://git.infradead.org/users/hch/dma-mapping: swiotlb: fix unexpected swiotlb_alloc_coherent failures
Diffstat (limited to 'lib')
-rw-r--r--lib/swiotlb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 47aeb04c1997..de7cc540450f 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -719,7 +719,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
goto out_warn;
*dma_handle = __phys_to_dma(dev, phys_addr);
- if (dma_coherent_ok(dev, *dma_handle, size))
+ if (!dma_coherent_ok(dev, *dma_handle, size))
goto out_unmap;
memset(phys_to_virt(phys_addr), 0, size);