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-rw-r--r--sound/core/pcm.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index b6d2331a82f7..be5714f1bb58 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -991,11 +991,13 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)));
kfree(runtime->hw_constraints.rules);
/* Avoid concurrent access to runtime via PCM timer interface */
- if (substream->timer)
+ if (substream->timer) {
spin_lock_irq(&substream->timer->lock);
- substream->runtime = NULL;
- if (substream->timer)
+ substream->runtime = NULL;
spin_unlock_irq(&substream->timer->lock);
+ } else {
+ substream->runtime = NULL;
+ }
kfree(runtime);
put_pid(substream->pid);
substream->pid = NULL;