Commit 603bf524 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
Browse files

[ALSA] pcm - NULL check in snd_pcm_suspend*() 



Modules: PCM Midlevel

Add NULL check in snd_pcm_suspend*() so that the caller doesn't have to do it
by itself.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent a381a7a6

sound/core/pcm_native.c

+6 −0
Original line number Diff line number Diff line
@@ -1073,6 +1073,9 @@ 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);
@@ -1091,6 +1094,9 @@ int snd_pcm_suspend_all(struct snd_pcm *pcm) 
	struct snd_pcm_substream *substream;

	int stream, err = 0;



	if (! pcm)

		return 0;



	for (stream = 0; stream < 2; stream++) {

		for (substream = pcm->streams[stream].substream;

		     substream; substream = substream->next) {