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dmaengine: pch_dma: convert callback to helper function 

This is in preperation of moving to a callback that provides results to the
callback for the transaction. The conversion will maintain current behavior
and the driver must convert to new callback mechanism at a later time in
order to receive results.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Dave Jiang 2016-07-20 13:12:29 -07:00 committed by Vinod Koul
parent 0024b2ac37
commit 5c066f7d01
1 changed files with 3 additions and 4 deletions
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7
drivers/dma/pch_dma.c
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@ -357,14 +357,13 @@ static void pdc_chain_complete(struct pch_dma_chan *pd_chan,
struct pch_dma_desc *desc)
{
struct dma_async_tx_descriptor *txd = &desc->txd;
dma_async_tx_callback callback = txd->callback;
void *param = txd->callback_param;
struct dmaengine_desc_callback cb;
dmaengine_desc_get_callback(txd, &cb);
list_splice_init(&desc->tx_list, &pd_chan->free_list);
list_move(&desc->desc_node, &pd_chan->free_list);
if (callback)
callback(param);
dmaengine_desc_callback_invoke(&cb, NULL);
}
static void pdc_complete_all(struct pch_dma_chan *pd_chan)