x86: remove map_single and unmap_single in struct dma_mapping_ops

This patch converts dma_map_single and dma_unmap_single to use
map_page and unmap_page respectively and removes unnecessary
map_single and unmap_single in struct dma_mapping_ops.

This leaves intel-iommu's dma_map_single and dma_unmap_single since
IA64 uses them. They will be removed after the unification.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 15 deletions

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 8570441..a5dedb6 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1341,13 +1341,6 @@ out:
 	return addr;
 }
 
-static dma_addr_t map_single(struct device *dev, phys_addr_t paddr,
-			     size_t size, int dir)
-{
-	return map_page(dev, pfn_to_page(paddr >> PAGE_SHIFT),
-			paddr & ~PAGE_MASK, size, dir, NULL);
-}
-
 /*
  * The exported unmap_single function for dma_ops.
  */
@@ -1378,12 +1371,6 @@ static void unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
 	spin_unlock_irqrestore(&domain->lock, flags);
 }
 
-static void unmap_single(struct device *dev, dma_addr_t dma_addr,
-			 size_t size, int dir)
-{
-	return unmap_page(dev, dma_addr, size, dir, NULL);
-}
-
 /*
  * This is a special map_sg function which is used if we should map a
  * device which is not handled by an AMD IOMMU in the system.
@@ -1664,8 +1651,6 @@ static void prealloc_protection_domains(void)
 static struct dma_mapping_ops amd_iommu_dma_ops = {
 	.alloc_coherent = alloc_coherent,
 	.free_coherent = free_coherent,
-	.map_single = map_single,
-	.unmap_single = unmap_single,
 	.map_page = map_page,
 	.unmap_page = unmap_page,
 	.map_sg = map_sg,