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Diffstat (limited to 'sound/core/pcm_native.c')
-rw-r--r--sound/core/pcm_native.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 263c01a70fd..7bac1cbe38d 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -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) {