4 files changed, 16 insertions, 0 deletions

diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 68e9f9a83fde..010094abf752 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -2379,6 +2379,9 @@ int snd_usbmidi_create(struct snd_card *card,
 
                 err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
                 break;
+        case QUIRK_MIDI_CH345:
+                err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
+                break;
         default:
                 dev_err(&umidi->dev->dev, "invalid quirk type %d\n",
                         quirk->type);
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 1a1e2e4df35e..c60a776e815d 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -2829,6 +2829,17 @@ YAMAHA_DEVICE(0x7010, "UB99"),
         .idProduct = 0x1020,
 },
 
+/* QinHeng devices */
+{
+        USB_DEVICE(0x1a86, 0x752d),
+        .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+                .vendor_name = "QinHeng",
+                .product_name = "CH345",
+                .ifnum = 1,
+                .type = QUIRK_MIDI_CH345
+        }
+},
+
 /* KeithMcMillen Stringport */
 {
         USB_DEVICE(0x1f38, 0x0001),
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 5ca80e7d30cd..7016ad898187 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -538,6 +538,7 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip,
                 [QUIRK_MIDI_CME] = create_any_midi_quirk,
                 [QUIRK_MIDI_AKAI] = create_any_midi_quirk,
                 [QUIRK_MIDI_FTDI] = create_any_midi_quirk,
+                [QUIRK_MIDI_CH345] = create_any_midi_quirk,
                 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
                 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
                 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk,
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 15a12715bd05..b665d85555cb 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -95,6 +95,7 @@ enum quirk_type {
         QUIRK_MIDI_AKAI,
         QUIRK_MIDI_US122L,
         QUIRK_MIDI_FTDI,
+        QUIRK_MIDI_CH345,
         QUIRK_AUDIO_STANDARD_INTERFACE,
         QUIRK_AUDIO_FIXED_ENDPOINT,
         QUIRK_AUDIO_EDIROL_UAXX,