[PATCH 4/7] ARM: dma-mapping: rename and export iommu_ops

[Prathyush K]

This patch renames the dma_ops structure for arm from iommu_ops
to arm_iommu_ops. This structure is also exported and declared
extern so that it can be set as any device's dma ops directly.

Signed-off-by: Prathyush K <prathyush.k at samsung.com>
---
 arch/arm/include/asm/dma-mapping.h |    1 +
 arch/arm/mm/dma-mapping.c          |    5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index bbef15d..5957357 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -13,6 +13,7 @@
 
 #define DMA_ERROR_CODE	(~0)
 extern struct dma_map_ops arm_dma_ops;
+extern struct dma_map_ops arm_iommu_ops;
 
 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 {
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 0f9358b..cff13ac 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1567,7 +1567,7 @@ static void arm_iommu_sync_single_for_device(struct device *dev,
 	__dma_page_cpu_to_dev(page, offset, size, dir);
 }
 
-struct dma_map_ops iommu_ops = {
+struct dma_map_ops arm_iommu_ops = {
 	.alloc		= arm_iommu_alloc_attrs,
 	.free		= arm_iommu_free_attrs,
 	.mmap		= arm_iommu_mmap_attrs,
@@ -1582,6 +1582,7 @@ struct dma_map_ops iommu_ops = {
 	.sync_sg_for_cpu	= arm_iommu_sync_sg_for_cpu,
 	.sync_sg_for_device	= arm_iommu_sync_sg_for_device,
 };
+EXPORT_SYMBOL(arm_iommu_ops);
 
 /**
  * arm_iommu_create_mapping
@@ -1674,7 +1675,7 @@ int arm_iommu_attach_device(struct device *dev,
 
 	kref_get(&mapping->kref);
 	dev->archdata.mapping = mapping;
-	set_dma_ops(dev, &iommu_ops);
+	set_dma_ops(dev, &arm_iommu_ops);
 
 	pr_info("Attached IOMMU controller to %s device.\n", dev_name(dev));
 	return 0;
-- 
1.7.0.4