1 files changed, 2 insertions, 0 deletions

diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
index ec920cbb2a71..9a1e87fd4815 100644
--- a/sound/pci/cs5535audio/cs5535audio_pcm.c
+++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
@@ -161,6 +161,7 @@ static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au,
         jmpprd_addr = cpu_to_le32(lastdesc->addr +
                                   (sizeof(struct cs5535audio_dma_desc)*periods));
 
+        dma->substream = substream;
         dma->period_bytes = period_bytes;
         dma->periods = periods;
         spin_lock_irq(&cs5535au->reg_lock);
@@ -238,6 +239,7 @@ static void cs5535audio_clear_dma_packets(struct cs5535audio *cs5535au,
 {
         snd_dma_free_pages(&dma->desc_buf);
         dma->desc_buf.area = NULL;
+        dma->substream = NULL;
 }
 
 static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream,