Update arch/ to use sg helpers

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

4 files changed, 11 insertions, 18 deletions

diff --git a/arch/sparc64/kernel/iommu.c b/arch/sparc64/kernel/iommu.c
index 29af777d7ac9..070a4846c0cb 100644
--- a/arch/sparc64/kernel/iommu.c
+++ b/arch/sparc64/kernel/iommu.c
@@ -472,8 +472,7 @@ static void dma_4u_unmap_single(struct device *dev, dma_addr_t bus_addr,
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
-#define SG_ENT_PHYS_ADDRESS(SG) \
-        (__pa(page_address((SG)->page)) + (SG)->offset)
+#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG))))
 
 static void fill_sg(iopte_t *iopte, struct scatterlist *sg,
                     int nused, int nelems,
@@ -565,9 +564,7 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
         /* Fast path single entry scatterlists. */
         if (nelems == 1) {
                 sglist->dma_address =
-                        dma_4u_map_single(dev,
-                                          (page_address(sglist->page) +
-                                           sglist->offset),
+                        dma_4u_map_single(dev, sg_virt(sglist),
                                           sglist->length, direction);
                 if (unlikely(sglist->dma_address == DMA_ERROR_CODE))
                         return 0;
diff --git a/arch/sparc64/kernel/iommu_common.c b/arch/sparc64/kernel/iommu_common.c
index d7ca900ec51d..78e8277df655 100644
--- a/arch/sparc64/kernel/iommu_common.c
+++ b/arch/sparc64/kernel/iommu_common.c
@@ -73,7 +73,7 @@ static int verify_one_map(struct scatterlist *dma_sg, struct scatterlist **__sg,
 
         daddr = dma_sg->dma_address;
         sglen = sg->length;
-        sgaddr = (unsigned long) (page_address(sg->page) + sg->offset);
+        sgaddr = (unsigned long) sg_virt(sg);
         while (dlen > 0) {
                 unsigned long paddr;
 
@@ -123,7 +123,7 @@ static int verify_one_map(struct scatterlist *dma_sg, struct scatterlist **__sg,
                 sg = sg_next(sg);
                 if (--nents <= 0)
                         break;
-                sgaddr = (unsigned long) (page_address(sg->page) + sg->offset);
+                sgaddr = (unsigned long) sg_virt(sg);
                 sglen = sg->length;
         }
         if (dlen < 0) {
@@ -191,7 +191,7 @@ void verify_sglist(struct scatterlist *sglist, int nents, iopte_t *iopte, int np
                         printk("sg(%d): page_addr(%p) off(%x) length(%x) "
                                "dma_address[%016x] dma_length[%016x]\n",
                                i,
-                               page_address(sg->page), sg->offset,
+                               page_address(sg_page(sg)), sg->offset,
                                sg->length,
                                sg->dma_address, sg->dma_length);
                 }
@@ -207,15 +207,14 @@ unsigned long prepare_sg(struct scatterlist *sg, int nents)
         unsigned long prev;
         u32 dent_addr, dent_len;
 
-        prev  = (unsigned long) (page_address(sg->page) + sg->offset);
+        prev  = (unsigned long) sg_virt(sg);
         prev += (unsigned long) (dent_len = sg->length);
-        dent_addr = (u32) ((unsigned long)(page_address(sg->page) + sg->offset)
-                           & (IO_PAGE_SIZE - 1UL));
+        dent_addr = (u32) ((unsigned long)(sg_virt(sg)) & (IO_PAGE_SIZE - 1UL));
         while (--nents) {
                 unsigned long addr;
 
                 sg = sg_next(sg);
-                addr = (unsigned long) (page_address(sg->page) + sg->offset);
+                addr = (unsigned long) sg_virt(sg);
                 if (! VCONTIG(prev, addr)) {
                         dma_sg->dma_address = dent_addr;
                         dma_sg->dma_length = dent_len;
diff --git a/arch/sparc64/kernel/ldc.c b/arch/sparc64/kernel/ldc.c
index 85a2be0b0962..c8313cb60f0a 100644
--- a/arch/sparc64/kernel/ldc.c
+++ b/arch/sparc64/kernel/ldc.c
@@ -2057,7 +2057,7 @@ static void fill_cookies(struct cookie_state *sp, unsigned long pa,
 
 static int sg_count_one(struct scatterlist *sg)
 {
-        unsigned long base = page_to_pfn(sg->page) << PAGE_SHIFT;
+        unsigned long base = page_to_pfn(sg_page(sg)) << PAGE_SHIFT;
         long len = sg->length;
 
         if ((sg->offset | len) & (8UL - 1))
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index fe46ace3e59f..8c4875bdb4a8 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -365,8 +365,7 @@ static void dma_4v_unmap_single(struct device *dev, dma_addr_t bus_addr,
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
-#define SG_ENT_PHYS_ADDRESS(SG) \
-        (__pa(page_address((SG)->page)) + (SG)->offset)
+#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG))))
 
 static long fill_sg(long entry, struct device *dev,
                     struct scatterlist *sg,
@@ -477,9 +476,7 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
         /* Fast path single entry scatterlists. */
         if (nelems == 1) {
                 sglist->dma_address =
-                        dma_4v_map_single(dev,
-                                          (page_address(sglist->page) +
-                                           sglist->offset),
+                        dma_4v_map_single(dev, sg_virt(sglist),
                                           sglist->length, direction);
                 if (unlikely(sglist->dma_address == DMA_ERROR_CODE))
                         return 0;