SND_PCM_STREAM_LOCK(9)                       PCM API                       SND_PCM_STREAM_LOCK(9)



NAME
       snd_pcm_stream_lock - Lock the PCM stream

SYNOPSIS
       void snd_pcm_stream_lock(struct snd_pcm_substream * substream);

ARGUMENTS
       substream
           PCM substream

DESCRIPTION
       This locks the PCM stream's spinlock or mutex depending on the nonatomic flag of the given
       substream. This also takes the global link rw lock (or rw sem), too, for avoiding the race
       with linked streams.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                    SND_PCM_STREAM_LOCK(9)