linux-kernel - [PATCH v2 4/4] ARM:dma-mapping:fix dma_map_sg and dma_unmap

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Date:	Mon, 20 Jul 2009 22:25:54 +0800
From:	tom.leiming@...il.com
To:	linux@....linux.org.uk, rmk@....linux.org.uk
Cc:	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Ming Lei <tom.leiming@...il.com>
Subject: [PATCH v2 4/4] ARM:dma-mapping:fix dma_map_sg and dma_unmap_sg

From: Ming Lei <tom.leiming@...il.com>

This patch removes unnecessary calling of debug_dma_map_page
and debug_dma_unmap_page in dma_map_sg and dma_unmap_sg.

Signed-off-by: Ming Lei <tom.leiming@...il.com>
---
 arch/arm/mm/dma-mapping.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 64e5d82..584018c 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -610,7 +610,7 @@ int __dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 	int i, j;
 
 	for_each_sg(sg, s, nents, i) {
-		s->dma_address = dma_map_page(dev, sg_page(s), s->offset,
+		s->dma_address = __dma_map_page(dev, sg_page(s), s->offset,
 						s->length, dir);
 		if (dma_mapping_error(dev, s->dma_address))
 			goto bad_mapping;
@@ -619,7 +619,7 @@ int __dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 
  bad_mapping:
 	for_each_sg(sg, s, i, j)
-		dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
+		__dma_unmap_single(dev, sg_dma_address(s), sg_dma_len(s), dir);
 	return 0;
 }
 EXPORT_SYMBOL(__dma_map_sg);
@@ -641,7 +641,7 @@ void __dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
 	int i;
 
 	for_each_sg(sg, s, nents, i)
-		dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
+		__dma_unmap_single(dev, sg_dma_address(s), sg_dma_len(s), dir);
 }
 EXPORT_SYMBOL(__dma_unmap_sg);
 
-- 
1.6.0.GIT

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