Messages in this thread Patch in this message | | | From | Peter Ujfalusi <> | Subject | [PATCH v2 02/14] dma: edma: Correct the handling of src/dst_maxburst == 0 | Date | Tue, 1 Apr 2014 16:06:03 +0300 |
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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> --- drivers/dma/edma.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index cd04eb7b182e..2742867fd1e6 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -285,6 +285,10 @@ 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 -- 1.9.1
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