snd_pcm_stream_lock9
Lock the pcm stream
Usage
void snd_pcm_stream_lock(struct
snd_pcm_substream
*
substream);
Arguments
substream
PCM substream
Overview
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.