alpha: fix sg_page breakage

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c
index 174b729c504b..468b76ce66a1 100644
--- a/arch/alpha/kernel/pci-noop.c
+++ b/arch/alpha/kernel/pci-noop.c
@@ -12,6 +12,7 @@
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/dma-mapping.h>
+#include <linux/scatterlist.h>
 
 #include "proto.h"
 
@@ -172,18 +173,19 @@ dma_alloc_coherent(struct device *dev, size_t size,
 EXPORT_SYMBOL(dma_alloc_coherent);
 
 int
-dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+dma_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
            enum dma_data_direction direction)
 {
         int i;
+        struct scatterlist *sg;
 
-        for (i = 0; i < nents; i++ ) {
+        for_each_sg(sgl, sg, nents, i) {
                 void *va;
 
-                BUG_ON(!sg[i].page);
-                va = page_address(sg[i].page) + sg[i].offset;
-                sg_dma_address(sg + i) = (dma_addr_t)virt_to_bus(va);
-                sg_dma_len(sg + i) = sg[i].length;
+                BUG_ON(!sg_page(sg));
+                va = sg_virt(sg);
+                sg_dma_address(sg) = (dma_addr_t)virt_to_bus(va);
+                sg_dma_len(sg) = sg->length;
         }
 
         return nents;