snd_pcm_suspend(9) centos man page | unix.com

SND_PCM_SUSPEND(9)						      PCM API							SND_PCM_SUSPEND(9)

NAME
       snd_pcm_suspend - trigger SUSPEND to all linked streams

SYNOPSIS
       int snd_pcm_suspend(struct snd_pcm_substream * substream);

ARGUMENTS
       substream
	   the PCM substream

DESCRIPTION
       After this call, all streams are changed to SUSPENDED state.

RETURN
       Zero if successful (or substream is NULL), or a negative error code.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							SND_PCM_SUSPEND(9)