linux-kernel - [PATCH] fix an example of scatterlists handling in DMA-API.txt

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Message-Id: <20080919012902J.fujita.tomonori@lab.ntt.co.jp>
Date:	Fri, 19 Sep 2008 01:29:55 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	linux-kernel@...r.kernel.org
Cc:	James.Bottomley@...senPartnership.com, jens.axboe@...cle.com
Subject: [PATCH] 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@....ntt.co.jp>
---
 Documentation/DMA-API.txt |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index d8b63d1..b8e8646 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);
 	}
-- 
1.5.4.2

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