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authorTakashi Iwai <tiwai@suse.de>2005-11-17 15:59:14 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:20:20 +0100
commit603bf524aa4cba95e4fcd64dbfffc41f804c65ab (patch)
tree6ea3abc3f71b3b234c161e1c5744674727176c00 /sound
parenta381a7a66486f11606eccb8866e29848f995278f (diff)
downloadblackbird-op-linux-603bf524aa4cba95e4fcd64dbfffc41f804c65ab.tar.gz
blackbird-op-linux-603bf524aa4cba95e4fcd64dbfffc41f804c65ab.zip
[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>
Diffstat (limited to 'sound')
-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 263c01a70fdd..7bac1cbe38da 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) {
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