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-rw-r--r--sound/usb/pcm.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index d5706b8b68a1..086244c70743 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -344,7 +344,12 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
ep = 0x81;
ifnum = 1;
goto add_sync_ep_from_ifnum;
- case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II */
+ case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II/IIc */
+ /* MicroBook IIc */
+ if (altsd->bInterfaceClass == USB_CLASS_AUDIO)
+ return 0;
+
+ /* MicroBook II */
ep = 0x84;
ifnum = 0;
goto add_sync_ep_from_ifnum;