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[v3,03/10] dmaengine: edma: Correct the handling of src/dst_maxburst == 0

Message ID 1397475725-5036-4-git-send-email-peter.ujfalusi@ti.com (mailing list archive)
State Accepted
Delegated to: Vinod Koul
Headers show

Commit Message

Peter Ujfalusi April 14, 2014, 11:41 a.m. UTC 
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>
---
 drivers/dma/edma.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

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