On Fri, 11 Aug 2023 09:21:44 +0200, john_candlish@xxxxxxxxxxxxxxxxx wrote: > > 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. Could you give the exact USB vendor/product IDs so that I can cook a patch? At best, please give alsa-info.sh output; run the script with --no-upload option and attach the output. thanks, Takashi
