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dmaengine: stm32-dma: Set correct args number for DMA request from DT 

This patch sets the right number of arguments to be used for DMA clients
which request channels from DT.

Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Reviewed-by: Ludovic BARRE <ludovic.barre@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
M'boumba Cedric Madianga 2016-12-13 14:40:43 +01:00 committed by Vinod Koul
parent 1032471b3e
commit 7e96304d99
1 changed files with 2 additions and 5 deletions
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7
drivers/dma/stm32-dma.c
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@ -972,21 +972,18 @@ static struct dma_chan *stm32_dma_of_xlate(struct of_phandle_args *dma_spec,
struct stm32_dma_chan *chan; struct stm32_dma_chan *chan;
struct dma_chan *c; struct dma_chan *c;
if (dma_spec->args_count < 3) if (dma_spec->args_count < 4)
return NULL; return NULL;
cfg.channel_id = dma_spec->args[0]; cfg.channel_id = dma_spec->args[0];
cfg.request_line = dma_spec->args[1]; cfg.request_line = dma_spec->args[1];
cfg.stream_config = dma_spec->args[2]; cfg.stream_config = dma_spec->args[2];
cfg.threshold = 0; cfg.threshold = dma_spec->args[3];
if ((cfg.channel_id >= STM32_DMA_MAX_CHANNELS) || (cfg.request_line >= if ((cfg.channel_id >= STM32_DMA_MAX_CHANNELS) || (cfg.request_line >=
STM32_DMA_MAX_REQUEST_ID)) STM32_DMA_MAX_REQUEST_ID))
return NULL; return NULL;
if (dma_spec->args_count > 3)
cfg.threshold = dma_spec->args[3];
chan = &dmadev->chan[cfg.channel_id]; chan = &dmadev->chan[cfg.channel_id];
c = dma_get_slave_channel(&chan->vchan.chan); c = dma_get_slave_channel(&chan->vchan.chan);