linux-kernel - [PATCH -mm 4/6] powerpc: remove unnecessary sync_single_range_* in swiotlb_dma

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Date:	Tue, 27 Apr 2010 21:25:38 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	akpm@...ux-foundation.org
Cc:	fujita.tomonori@....ntt.co.jp, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Becky Bruce <beckyb@...nel.crashing.org>
Subject: [PATCH -mm 4/6] powerpc: remove unnecessary sync_single_range_* in swiotlb_dma_ops

sync_single_range_for_cpu and sync_single_range_for_device hooks in
swiotlb_dma_ops are unnecessary because sync_single_for_cpu and
sync_single_for_device are used there.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Becky Bruce <beckyb@...nel.crashing.org>
---
 arch/powerpc/kernel/dma-swiotlb.c |    4 ++--
 arch/powerpc/kernel/dma.c         |   12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index 59c9285..cc79e8d 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -38,8 +38,8 @@ struct dma_map_ops swiotlb_dma_ops = {
 	.dma_supported = swiotlb_dma_supported,
 	.map_page = swiotlb_map_page,
 	.unmap_page = swiotlb_unmap_page,
-	.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
-	.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
+	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
+	.sync_single_for_device = swiotlb_sync_single_for_device,
 	.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
 	.sync_sg_for_device = swiotlb_sync_sg_for_device,
 	.mapping_error = swiotlb_dma_mapping_error,
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 6c1df57..8d1de6f 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -127,11 +127,11 @@ static inline void dma_direct_sync_sg(struct device *dev,
 		__dma_sync_page(sg_page(sg), sg->offset, sg->length, direction);
 }
 
-static inline void dma_direct_sync_single_range(struct device *dev,
-		dma_addr_t dma_handle, unsigned long offset, size_t size,
-		enum dma_data_direction direction)
+static inline void dma_direct_sync_single(struct device *dev,
+					  dma_addr_t dma_handle, size_t size,
+					  enum dma_data_direction direction)
 {
-	__dma_sync(bus_to_virt(dma_handle+offset), size, direction);
+	__dma_sync(bus_to_virt(dma_handle), size, direction);
 }
 #endif
 
@@ -144,8 +144,8 @@ struct dma_map_ops dma_direct_ops = {
 	.map_page	= dma_direct_map_page,
 	.unmap_page	= dma_direct_unmap_page,
 #ifdef CONFIG_NOT_COHERENT_CACHE
-	.sync_single_range_for_cpu 	= dma_direct_sync_single_range,
-	.sync_single_range_for_device 	= dma_direct_sync_single_range,
+	.sync_single_for_cpu 		= dma_direct_sync_single,
+	.sync_single_for_device 	= dma_direct_sync_single,
 	.sync_sg_for_cpu 		= dma_direct_sync_sg,
 	.sync_sg_for_device 		= dma_direct_sync_sg,
 #endif
-- 
1.6.5

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