[PATCH] -- fix Boss MS-3 midi-usb communication

[john_candlish@xxxxxxxxxxxxxxxxx]

This one line change gets MIDI communication flowing between ALSA and the Boss MS-3 multi-effect switcher.

/////
*** sound/usb/midi.c    2023-08-10 22:46:31.016346930 +0200
--- sound/usb/midi.c-orig   2023-07-19 16:37:03.000000000 +0200
***************
*** 2106,2113 ****
    struct usb_endpoint_descriptor *epd;
    int i, out_eps = 0, in_eps = 0;

!   if (USB_ID_VENDOR(umidi->usb_id) == 0x0582 &&
!       USB_ID_PRODUCT(umidi->usb_id) != 0x01f5)
        snd_usbmidi_switch_roland_altsetting(umidi);

if (endpoint[0].out_ep || endpoint[0].in_ep)
--- 2106,2112 ----
    struct usb_endpoint_descriptor *epd;
    int i, out_eps = 0, in_eps = 0;

!   if (USB_ID_VENDOR(umidi->usb_id) == 0x0582)
        snd_usbmidi_switch_roland_altsetting(umidi);

if (endpoint[0].out_ep || endpoint[0].in_ep)

/////

There are doubtless other Roland/Boss USB_ID_PRODUCT id's that are effected and it would be nice to make the  USB_ID_PRODUCT value a tunable, but that is beyond my competence.