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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2014-04-14 14:41:58 +0300
committerVinod Koul <vinod.koul@intel.com>2014-04-22 21:35:22 +0530
commitb2b617de04081931cc10fd862b76b9fcaa9489e2 (patch)
tree31ec9e7aae260daed8123e5f7708f42fd9b01dea /drivers/dma
parent7cf2af90cd515bf27f1b7183f3d6f91b151990ed (diff)
downloadlinux-b2b617de04081931cc10fd862b76b9fcaa9489e2.tar.bz2
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/edma.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 926360c2db6a..d7649d229755 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -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