[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: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 263c01a..7bac1cb 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1073,6 +1073,9 @@
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 @@
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) {