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, 2 insertions, 17 deletions

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index e49c6dd0e8c6..9c557c0c928c 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -275,13 +275,6 @@ static dma_addr_t gart_map_page(struct device *dev, struct page *page,
         return bus;
 }
 
-static dma_addr_t gart_map_single(struct device *dev, phys_addr_t paddr,
-                                  size_t size, int dir)
-{
-        return gart_map_page(dev, pfn_to_page(paddr >> PAGE_SHIFT),
-                             paddr & ~PAGE_MASK, size, dir, NULL);
-}
-
 /*
  * Free a DMA mapping.
  */
@@ -306,12 +299,6 @@ static void gart_unmap_page(struct device *dev, dma_addr_t dma_addr,
         free_iommu(iommu_page, npages);
 }
 
-static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr,
-                              size_t size, int direction)
-{
-        gart_unmap_page(dev, dma_addr, size, direction, NULL);
-}
-
 /*
  * Wrapper for pci_unmap_single working with scatterlists.
  */
@@ -324,7 +311,7 @@ gart_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
         for_each_sg(sg, s, nents, i) {
                 if (!s->dma_length || !s->length)
                         break;
-                gart_unmap_single(dev, s->dma_address, s->dma_length, dir);
+                gart_unmap_page(dev, s->dma_address, s->dma_length, dir, NULL);
         }
 }
 
@@ -538,7 +525,7 @@ static void
 gart_free_coherent(struct device *dev, size_t size, void *vaddr,
                    dma_addr_t dma_addr)
 {
-        gart_unmap_single(dev, dma_addr, size, DMA_BIDIRECTIONAL);
+        gart_unmap_page(dev, dma_addr, size, DMA_BIDIRECTIONAL, NULL);
         free_pages((unsigned long)vaddr, get_order(size));
 }
 
@@ -725,8 +712,6 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
 }
 
 static struct dma_mapping_ops gart_dma_ops = {
-        .map_single                     = gart_map_single,
-        .unmap_single                   = gart_unmap_single,
         .map_sg                         = gart_map_sg,
         .unmap_sg                       = gart_unmap_sg,
         .map_page                       = gart_map_page,