lkml.org 
[lkml]   [2012]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] dmaengine: care sd_dma_address/len in dmaengine_prep_slave_single()
dmaengine_prep_slave_single() is helper macro of dmaengine.
But it doesn't have sg_dma_address/len() settings which are required.
And it used void *buf in parameter, but it should be dma_addr_t.
This patch fixes up it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
include/linux/dmaengine.h | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 75f53f8..f47c578 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -521,11 +521,16 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
}

static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
- struct dma_chan *chan, void *buf, size_t len,
+ struct dma_chan *chan, dma_addr_t buf, size_t len,
enum dma_data_direction dir, unsigned long flags)
{
struct scatterlist sg;
- sg_init_one(&sg, buf, len);
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, pfn_to_page(PFN_DOWN(buf)),
+ len, offset_in_page(buf));
+ sg_dma_address(&sg) = buf;
+ sg_dma_len(&sg) = len;

return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags);
}
--
1.7.5.4


\
 
 \ /
  Last update: 2012-01-30 10:29    [W:0.164 / U:0.324 seconds]
©2003-2014 Jasper Spaans. Advertise on this site