int snd_pcm_drain_done(struct snd_pcm_substream *substream);
int snd_pcm_stop_xrun(struct snd_pcm_substream *substream);
#ifdef CONFIG_PM
-int snd_pcm_suspend(struct snd_pcm_substream *substream);
int snd_pcm_suspend_all(struct snd_pcm *pcm);
#else
-static inline int snd_pcm_suspend(struct snd_pcm_substream *substream)
-{
- return 0;
-}
static inline int snd_pcm_suspend_all(struct snd_pcm *pcm)
{
return 0;
.post_action = snd_pcm_post_suspend
};
-/**
+/*
* snd_pcm_suspend - trigger SUSPEND to all linked streams
* @substream: the PCM substream
*
* After this call, all streams are changed to SUSPENDED state.
*
- * Return: Zero if successful (or @substream is %NULL), or a negative error
- * code.
+ * Return: Zero if successful, or a negative error code.
*/
-int snd_pcm_suspend(struct snd_pcm_substream *substream)
+static int snd_pcm_suspend(struct snd_pcm_substream *substream)
{
int err;
unsigned long flags;
- if (! substream)
- return 0;
-
snd_pcm_stream_lock_irqsave(substream, flags);
err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0);
snd_pcm_stream_unlock_irqrestore(substream, flags);
return err;
}
-EXPORT_SYMBOL(snd_pcm_suspend);
/**
* snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm