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Date: Mon, 14 Apr 2014 14:41:58 +0300 From: Peter Ujfalusi <peter.ujfalusi@...com> To: <dan.j.williams@...el.com>, <vinod.koul@...el.com>, <nsekhar@...com>, <joelf@...com> CC: <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-omap@...r.kernel.org>, <davinci-linux-open-source@...ux.davincidsp.com> Subject: [PATCH v3 03/10] 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@...com> Acked-by: Joel Fernandes <joelf@...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 -- 1.9.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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