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dmaengine: edma: Correct the handling of src/dst_maxburst == 0 

When clients asks for maxburst = 0 it is basically the same case as if they
were asking for maxburst = 1 since in both case ASYNC need to be used and
the eDMA is expected to write/read one word per DMA request.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Joel Fernandes <joelf@ti.com>
Reviewed-and-Tested-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Peter Ujfalusi 2014-04-14 14:41:58 +03:00 committed by Vinod Koul
parent 7cf2af90cd
commit b2b617de04
1 changed files with 4 additions and 0 deletions
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4
drivers/dma/edma.c
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@ -287,6 +287,10 @@ static int edma_config_pset(struct dma_chan *chan, struct edmacc_param *pset,
int absync;
acnt = dev_width;
/* src/dst_maxburst == 0 is the same case as src/dst_maxburst == 1 */
if (!burst)
burst = 1;
/*
* If the maxburst is equal to the fifo width, use
* A-synced transfers. This allows for large contiguous