1 files changed, 25 insertions, 0 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 6e70ba4ee21f..bbd70d5814a0 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -3023,6 +3023,31 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
         alts = &iface->altsetting[1];
         altsd = get_iface_desc(alts);
 
+        if (altsd->bNumEndpoints == 2) {
+                static const struct snd_usb_midi_endpoint_info ua700_ep = {
+                        .out_cables = 0x0003,
+                        .in_cables  = 0x0003
+                };
+                static const struct snd_usb_audio_quirk ua700_quirk = {
+                        .type = QUIRK_MIDI_FIXED_ENDPOINT,
+                        .data = &ua700_ep
+                };
+                static const struct snd_usb_midi_endpoint_info uaxx_ep = {
+                        .out_cables = 0x0001,
+                        .in_cables  = 0x0001
+                };
+                static const struct snd_usb_audio_quirk uaxx_quirk = {
+                        .type = QUIRK_MIDI_FIXED_ENDPOINT,
+                        .data = &uaxx_ep
+                };
+                if (chip->usb_id == USB_ID(0x0582, 0x002b))
+                        return snd_usb_create_midi_interface(chip, iface,
+                                                             &ua700_quirk);
+                else
+                        return snd_usb_create_midi_interface(chip, iface,
+                                                             &uaxx_quirk);
+        }
+
         if (altsd->bNumEndpoints != 1)
                 return -ENXIO;