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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2016-12-15 02:04:58 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-15 03:04:07 +0300 |
| commit | 9f318d470e37a470d65449f94a06165ea72dbce1 (patch) | |
| tree | 03e6e15a8998785507f793c05500d09554e4e334 /arch/mips/loongson64 | |
| parent | 98ac2fc274e07a22bea43682cf8998f47ffea9d0 (diff) | |
| download | linux-9f318d470e37a470d65449f94a06165ea72dbce1.tar.xz | |
arch/mips: add option to skip DMA sync as a part of map and unmap
This change allows us to pass DMA_ATTR_SKIP_CPU_SYNC which allows us to
avoid invoking cache line invalidation if the driver will just handle it
via a sync_for_cpu or sync_for_device call.
Link: http://lkml.kernel.org/r/20161110113513.76501.32321.stgit@ahduyck-blue-test.jf.intel.com
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mips/loongson64')
| -rw-r--r-- | arch/mips/loongson64/common/dma-swiotlb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/loongson64/common/dma-swiotlb.c b/arch/mips/loongson64/common/dma-swiotlb.c index 1a80b6f73ab2..aab4fd681e1f 100644 --- a/arch/mips/loongson64/common/dma-swiotlb.c +++ b/arch/mips/loongson64/common/dma-swiotlb.c @@ -61,7 +61,7 @@ static int loongson_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { - int r = swiotlb_map_sg_attrs(dev, sg, nents, dir, 0); + int r = swiotlb_map_sg_attrs(dev, sg, nents, dir, attrs); mb(); return r; |