dmaengine_pcm_release_chan  510 sound/soc/soc-generic-dmaengine-pcm.c 	dmaengine_pcm_release_chan(pcm);
dmaengine_pcm_release_chan  535 sound/soc/soc-generic-dmaengine-pcm.c 	dmaengine_pcm_release_chan(pcm);