linux-kernel - [PATCH 1/4] dma-mapping: Constify attrs passed to dma_get

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Date:	Tue, 24 May 2016 08:28:07 +0200
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Russell King <linux@...linux.org.uk>,
	Stefano Stabellini <sstabellini@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Joerg Roedel <joro@...tes.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xenproject.org, iommu@...ts.linux-foundation.org
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: [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@...sung.com>
---
 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;
-- 
1.9.1