diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
index 2433f7c..64de0a3 100644
--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -144,6 +144,7 @@
 	if (!edev)
 		return -ENOMEM;
 	hdev = &edev->hdac;
+	edev->ebus = ebus;
 
 	snprintf(name, sizeof(name), "ehdaudio%dD%d", ebus->idx, addr);