Messages in this thread Patch in this message | | | Date | Mon, 30 Jan 2012 17:13:30 -0800 (PST) | From | Kuninori Morimoto <> | Subject | [PATCH v2] dmaengine: care sd_dma_address/len in dmaengine_prep_slave_single() |
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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> --- V1 -> v2
- based on latest linus/master branch
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 679b349..97eaf57 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -606,11 +606,16 @@ 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_transfer_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
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