use sg helper function in DMA mapping documentation

Signed-off-by: Saeed Bishara <saeed.bishara@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index e07f2530326b..6883921743f0 100644
--- a/Documentation/DMA-mapping.txt
+++ b/Documentation/DMA-mapping.txt
@@ -514,7 +514,7 @@ With scatterlists, you map a region gathered from several regions by:
         int i, count = pci_map_sg(dev, sglist, nents, direction);
         struct scatterlist *sg;
 
-        for (i = 0, sg = sglist; i < count; i++, sg++) {
+        for_each_sg(sglist, sg, count, i) {
                 hw_address[i] = sg_dma_address(sg);
                 hw_len[i] = sg_dma_len(sg);
         }