Commit b2b617de authored Apr 14, 2014 by Peter Ujfalusi Committed by Vinod Koul Apr 22, 2014

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>

parent 7cf2af90

drivers/dma/edma.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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