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From: nicolas.ferre@atmel.com (Nicolas Ferre)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] dmaengine: at_hdmac: use dma_address to program DMA hardware
Date: Wed, 15 Dec 2010 18:50:16 +0100	[thread overview]
Message-ID: <1292435416-16927-1-git-send-email-nicolas.ferre@atmel.com> (raw)

In atc_prep_slave_sg() function we use dma_address field of scatterlist with
sg_dma_address() macro instead of sg_phys(). DMA address is already computed
by dma_map_sg() or another mapping function in calling driver.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
---
 drivers/dma/at_hdmac.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index ea0ee81..ee7dacd 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -670,7 +670,7 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 			if (!desc)
 				goto err_desc_get;
 
-			mem = sg_phys(sg);
+			mem = sg_dma_address(sg);
 			len = sg_dma_len(sg);
 			mem_width = 2;
 			if (unlikely(mem & 3 || len & 3))
@@ -712,7 +712,7 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 			if (!desc)
 				goto err_desc_get;
 
-			mem = sg_phys(sg);
+			mem = sg_dma_address(sg);
 			len = sg_dma_len(sg);
 			mem_width = 2;
 			if (unlikely(mem & 3 || len & 3))
-- 
1.7.3

             reply	other threads:[~2010-12-15 17:50 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-15 17:50 Nicolas Ferre [this message]
2011-01-10 13:21 ` [PATCH] dmaengine: at_hdmac: use dma_address to program DMA hardware Nicolas Ferre
2011-01-15  0:14   ` Dan Williams
2011-01-12 14:39 ` [PATCH 2/6] dmaengine: at_hdmac: trivial add precision to unmapping comment Nicolas Ferre
2011-01-12 14:39 ` [PATCH 3/6] dmaengine: at_hdmac: no need set ACK in new descriptor Nicolas Ferre
2011-01-12 14:39 ` [PATCH 4/6] dmaengine: at_hdmac: use subsys_initcall instead of module_init Nicolas Ferre
2011-01-15  0:27   ` Dan Williams
2011-01-12 14:39 ` [PATCH 5/6] dmaengine: at_hdmac: flags located in first descriptor Nicolas Ferre
2011-01-12 14:39 ` [PATCH 6/6] dmaengine: at_hdmac: fix race while monitoring channel status Nicolas Ferre

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