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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: Sascha Hauer <s.hauer@pengutronix.de>
[corrected change log to DMA engine API insteadof DMA API]
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Sascha Hauer 2012-01-09 10:32:50 +01:00 committed by Vinod Koul
parent 5b3168763f
commit 2b4f130e05
1 changed files with 5 additions and 6 deletions
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11
drivers/dma/imx-sdma.c
View File

@ -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