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commit 0cd60eb1a7b5421e92a3489e1829bfb2243e21e1
parent 23203e3f34c97f4ddd6e353adba45161880a52a4
Author: Christoph Hellwig <hch@lst.de>
Date:   Sat, 22 Dec 2018 09:21:08 +0100

dma-mapping: fix flags in dma_alloc_wc

We really need the writecombine flag in dma_alloc_wc, fix a stupid
oversight.

Fixes: 7ed1d91a9e ("dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Diffstat:
Minclude/linux/dma-mapping.h | 2+-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h @@ -796,7 +796,7 @@ static inline void dmam_release_declared_memory(struct device *dev) static inline void *dma_alloc_wc(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t gfp) { - unsigned long attrs = DMA_ATTR_NO_WARN; + unsigned long attrs = DMA_ATTR_WRITE_COMBINE; if (gfp & __GFP_NOWARN) attrs |= DMA_ATTR_NO_WARN;