diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 23a44c3..49bc836 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -438,6 +438,8 @@
 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
 					   struct snd_pcm_substream *substream);
 void snd_hdac_stream_release(struct hdac_stream *azx_dev);
+struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
+					int dir, int stream_tag);
 
 int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);