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Diffstat (limited to 'sound/soc/tegra/tegra_pcm.c')
-rw-r--r--sound/soc/tegra/tegra_pcm.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index ff86e5e..c7cfd96 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -309,9 +309,14 @@ static int tegra_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
static void tegra_pcm_deallocate_dma_buffer(struct snd_pcm *pcm, int stream)
{
- struct snd_pcm_substream *substream = pcm->streams[stream].substream;
- struct snd_dma_buffer *buf = &substream->dma_buffer;
+ struct snd_pcm_substream *substream;
+ struct snd_dma_buffer *buf;
+
+ substream = pcm->streams[stream].substream;
+ if (!substream)
+ return;
+ buf = &substream->dma_buffer;
if (!buf->area)
return;
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