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-rw-r--r--sound/usb/card.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 9feb00c831a0..b443a33d31c9 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -465,7 +465,13 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
goto __error;
}
- chip->ctrl_intf = alts;
+ /*
+ * For devices with more than one control interface, we assume the
+ * first contains the audio controls. We might need a more specific
+ * check here in the future.
+ */
+ if (!chip->ctrl_intf)
+ chip->ctrl_intf = alts;
if (err > 0) {
/* create normal USB audio interfaces */