diff --git a/[refs] b/[refs]
index d66e3882f901..d4873da3f972 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f09d045e2a61d2fdae3d0127208f18c9f44acf80
+refs/heads/master: ca4c2adaf2d7efcc43e16c8010cf4c30def75058
diff --git a/trunk/sound/usb/mixer.c b/trunk/sound/usb/mixer.c
index 1deef623c081..21613fe0c1a2 100644
--- a/trunk/sound/usb/mixer.c
+++ b/trunk/sound/usb/mixer.c
@@ -2055,7 +2055,7 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
 	}
 
 	host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
-	mixer->protocol = host_iface->desc.bInterfaceProtocol;
+	mixer->protocol = get_iface_desc(host_iface)->bInterfaceProtocol;
 
 	if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
 	    (err = snd_usb_mixer_status_create(mixer)) < 0)