94 	struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);  in rsnd_dmaen_cleanup()  local
101 	if (dmaen->chan)  in rsnd_dmaen_cleanup()
104 	dmaen->chan = NULL;  in rsnd_dmaen_cleanup()
114 	struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);  in rsnd_dmaen_prepare()  local
118 	if (dmaen->chan)  in rsnd_dmaen_prepare()
126 	dmaen->chan = rsnd_dmaen_request_channel(io,  in rsnd_dmaen_prepare()
129 	if (IS_ERR_OR_NULL(dmaen->chan)) {  in rsnd_dmaen_prepare()
130 		dmaen->chan = NULL;  in rsnd_dmaen_prepare()
135 	return snd_dmaengine_pcm_open(io->substream, dmaen->chan);  in rsnd_dmaen_prepare()
143 	struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma);  in rsnd_dmaen_start()  local
184 	ret = dmaengine_slave_config(dmaen->chan, &cfg);  in rsnd_dmaen_start()