snd_pcm_update_hw_ptr_pos  192 sound/core/pcm_lib.c 	pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
snd_pcm_update_hw_ptr_pos  240 sound/core/pcm_lib.c 	pos = snd_pcm_update_hw_ptr_pos(substream, runtime);