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dmaengine: txx9dmac: 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>
hifive-unleashed-5.1
Dave Jiang 2016-07-20 13:13:28 -07:00 committed by Vinod Koul
parent a06a5bb908
commit d254c8d0a7
1 changed files with 3 additions and 6 deletions
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9
drivers/dma/txx9dmac.c
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@ -403,16 +403,14 @@ static void
txx9dmac_descriptor_complete(struct txx9dmac_chan *dc,
struct txx9dmac_desc *desc)
{
dma_async_tx_callback callback;
void *param;
struct dmaengine_desc_callback cb;
struct dma_async_tx_descriptor *txd = &desc->txd;
dev_vdbg(chan2dev(&dc->chan), "descriptor %u %p complete\n",
txd->cookie, desc);
dma_cookie_complete(txd);
callback = txd->callback;
param = txd->callback_param;
dmaengine_desc_get_callback(txd, &cb);
txx9dmac_sync_desc_for_cpu(dc, desc);
list_splice_init(&desc->tx_list, &dc->free_list);
@ -423,8 +421,7 @@ txx9dmac_descriptor_complete(struct txx9dmac_chan *dc,
* The API requires that no submissions are done from a
* callback, so we don't need to drop the lock here
*/
if (callback)
callback(param);
dmaengine_desc_callback_invoke(&cb, NULL);
dma_run_dependencies(txd);
}