vx_pcm_playback_transfer  821 sound/drivers/vx/vx_pcm.c 			vx_pcm_playback_transfer(chip, subs, pipe, 2);
vx_pcm_playback_transfer 1224 sound/drivers/vx/vx_pcm.c 				vx_pcm_playback_transfer(chip, pipe->substream, pipe, buf);