Merge remote branch 'alsa/fixes' into fix/misc

1 files changed, 15 insertions, 3 deletions

diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 6e89b8368d9a..aae50df06232 100644
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -1162,10 +1162,22 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
                 pipe = usb_sndintpipe(umidi->dev, ep_info->out_ep);
         else
                 pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
-        if (umidi->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */
-                ep->max_transfer = 4;
-        else
+        switch (umidi->usb_id) {
+        default:
                 ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
+                break;
+                /*
+                 * Various chips declare a packet size larger than 4 bytes, but
+                 * do not actually work with larger packets:
+                 */
+        case USB_ID(0x0a92, 0x1020): /* ESI M4U */
+        case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */
+        case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */
+        case USB_ID(0x15ca, 0x1806): /* Textech USB Midi Cable */
+        case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */
+                ep->max_transfer = 4;
+                break;
+        }
         for (i = 0; i < OUTPUT_URBS; ++i) {
                 buffer = usb_buffer_alloc(umidi->dev,
                                           ep->max_transfer, GFP_KERNEL,