dma_async_is_tx_complete
if (dma_async_is_tx_complete(hdev->dma_lch, cookie,
status = dma_async_is_tx_complete(chan, cookie, NULL, NULL);
status = dma_async_is_tx_complete(chan, cookie, NULL,
last_status = dma_async_is_tx_complete(pcdev->dma_chans[chan],
status = dma_async_is_tx_complete(chan, cookie, NULL, NULL);
req->status = dma_async_is_tx_complete(priv->dmach, req->cookie,