Geraldo, you've made testing kernel patches for me quite easy, so thanks to you! And I'm happy to report that your patch, which I manually applied because I forgot to remove the "if (false)" change, is working perfectly! I am now able to use the, minimally mentioned, Takashi UA-101 MIDI patch with the UA-101 set to USB 1.1 mode, on the same kernel that has perfectly clean Boutique D-05 playback. The Takashi UA-101 patch is here: https://bugzilla.kernel.org/show_bug.cgi?id=212477, just in case there's curiosity. :) It seems to me, that since the UA-101 in (USB 1.1 mode) isn't compatible with the "if (false)" endpoint.c method, it would have to be matched for exclusion, assuming we would ever be able to more simply match with Roland's/BOSS' Vendor ID of 0x0582. I still think that would be the ultimate patch because, as far as I'm aware, all new Roland/BOSS devices use minimally-differing forms of this implicit feedback quirk. Thanks. again, for everything Mike, Geraldo, & Takashi! Lucas
