1 files changed, 20 insertions, 2 deletions

diff --git a/sound/usb/card.c b/sound/usb/card.c
index 1a033177b83f..64952e2d3ed1 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -147,14 +147,32 @@ static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int int
                 return -EINVAL;
         }
 
+        alts = &iface->altsetting[0];
+        altsd = get_iface_desc(alts);
+
+        /*
+         * Android with both accessory and audio interfaces enabled gets the
+         * interface numbers wrong.
+         */
+        if ((chip->usb_id == USB_ID(0x18d1, 0x2d04) ||
+             chip->usb_id == USB_ID(0x18d1, 0x2d05)) &&
+            interface == 0 &&
+            altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC &&
+            altsd->bInterfaceSubClass == USB_SUBCLASS_VENDOR_SPEC) {
+                interface = 2;
+                iface = usb_ifnum_to_if(dev, interface);
+                if (!iface)
+                        return -EINVAL;
+                alts = &iface->altsetting[0];
+                altsd = get_iface_desc(alts);
+        }
+
         if (usb_interface_claimed(iface)) {
                 snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n",
                                                 dev->devnum, ctrlif, interface);
                 return -EINVAL;
         }
 
-        alts = &iface->altsetting[0];
-        altsd = get_iface_desc(alts);
         if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
              altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
             altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) {