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Commit 2b4f130e authored by Sascha Hauer's avatar Sascha Hauer Committed by Vinod Koul
Browse files

dma: imx-sdma: start transfer in issue_pending 



The DMA engine API requires that transfers are started in issue_pending
instead of tx_submit. Fix this.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
[corrected change log to DMA engine API insteadof DMA API]
Signed-off-by: default avatarVinod Koul <vinod.koul@linux.intel.com>
parent 5b316876

drivers/dma/imx-sdma.c

+5 −6
Original line number Diff line number Diff line
@@ -838,15 +838,12 @@ static dma_cookie_t sdma_tx_submit(struct dma_async_tx_descriptor *tx) 
{

	unsigned long flags;

	struct sdma_channel *sdmac = to_sdma_chan(tx->chan);

	struct sdma_engine *sdma = sdmac->sdma;

	dma_cookie_t cookie;



	spin_lock_irqsave(&sdmac->lock, flags);



	cookie = sdma_assign_cookie(sdmac);



	sdma_enable_channel(sdma, sdmac->channel);



	spin_unlock_irqrestore(&sdmac->lock, flags);



	return cookie;
@@ -1135,9 +1132,11 @@ static enum dma_status sdma_tx_status(struct dma_chan *chan, 


static void sdma_issue_pending(struct dma_chan *chan)

{

	/*

	 * Nothing to do. We only have a single descriptor

	 */

	struct sdma_channel *sdmac = to_sdma_chan(chan);

	struct sdma_engine *sdma = sdmac->sdma;



	if (sdmac->status == DMA_IN_PROGRESS)

		sdma_enable_channel(sdma, sdmac->channel);

}



#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1	34