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[Xen-devel] [PATCH 1/4] dma-mapping: Constify attrs passed to dma_get_attr

The dma_get_attr() does not modify passed dma_attrs so the pointer can
point to const data.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
 include/linux/dma-attrs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h
index 5246239a4953..f3c5aeadb100 100644
--- a/include/linux/dma-attrs.h
+++ b/include/linux/dma-attrs.h
@@ -60,7 +60,8 @@ static inline void dma_set_attr(enum dma_attr attr, struct 
dma_attrs *attrs)
  * @attr: attribute to set
  * @attrs: struct dma_attrs (may be NULL)
-static inline int dma_get_attr(enum dma_attr attr, struct dma_attrs *attrs)
+static inline int dma_get_attr(enum dma_attr attr,
+                              const struct dma_attrs *attrs)
        if (attrs == NULL)
                return 0;

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