Messages in this thread |  | | Subject | Re: [PATCH] dmaengine: care sd_dma_address/len in dmaengine_prep_slave_single() | From | Vinod Koul <> | Date | Mon, 30 Jan 2012 15:26:06 +0530 |
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On Mon, 2012-01-30 at 01:25 -0800, Kuninori Morimoto wrote: > 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) dma_transfer_direction... this is not based on 3.3-rc1 or slave-dma/next?
> { > 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); > }
-- ~Vinod
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