This patch adds DMA_ATTR_READ_ONLY attribute to the DMA-mapping
subsystem.
This sets mapping attribute read-only.
Signed-off-by: Hiroshi Doyu <hdoyu@xxxxxxxxxx>
---
include/linux/dma-attrs.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h
index f272809..5d7371c 100644
--- a/include/linux/dma-attrs.h
+++ b/include/linux/dma-attrs.h
@@ -18,6 +18,7 @@ enum dma_attr {
DMA_ATTR_NO_KERNEL_MAPPING,
DMA_ATTR_SKIP_CPU_SYNC,
DMA_ATTR_SKIP_FREE_IOVA,
+ DMA_ATTR_READ_ONLY,
DMA_ATTR_MAX,
};
--
1.8.1.5
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