From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Thu, 18 Sep 2008 16:35:28 +0000 (-0700)
Subject: fix an example of scatterlists handling in DMA-API.txt
X-Git-Tag: Ubuntu-5.0.0-8.9~31139^2~27
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=79eb014578b79fcfb9d9e7dc979d1316079220aa;p=mirror_ubuntu-disco-kernel.git

fix an example of scatterlists handling in DMA-API.txt

This example isn't the proper way to handle scatterlists (can't handle
sg chaining).

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

diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index d8b63d164e41..b8e86460046e 100644
--- a/Documentation/DMA-API.txt
+++ b/Documentation/DMA-API.txt
@@ -337,7 +337,7 @@ With scatterlists, you use the resulting mapping like this:
 	int i, count = dma_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);
 	}