https://bugzilla.kernel.org/show_bug.cgi?id=212955 --- Comment #20 from Lucas Endres (jaffa225man@xxxxxxxxx) --- I sped through it this time with definite success: The commit causing it was one I helped diagnose so that the UA-101's MIDI device became available, but since I told Takashi Iwai about the issue and he wanted me to check with you USB gurus, maybe we can help eachother in figuring out why the snd-ua101 module doesn't work with its "Hi-SPEED" switch set to "off" (USB1 mode) only. The snd-usb-audio module apparently did work for USB1 mode, but caused the MIDI port to be unavailable. And, yes, its parent commit tested good (473d5ae82d73c3b21160b725af0e247fa94d7832), and this really was tested as bad: d763145312582c08c4e9ed99d61276cde8488256 is the first bad commit commit d763145312582c08c4e9ed99d61276cde8488256 Author: Takashi Iwai <tiwai@xxxxxxx> Date: Thu Apr 8 09:56:56 2021 +0200 ALSA: usb-audio: Skip probe of UA-101 devices UA-101 device and co are supported by another driver, snd-ua101, but the USB audio class driver (snd-usb-audio) catches all and this resulted in the lack of functionality like missing MIDI devices. This patch introduces a sort of deny-listing for those devices to just return -ENODEV at probe in snd-usb-audio driver, so that it falls back to the probe by snd-ua101. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212477 Link: https://lore.kernel.org/r/20210408075656.30184-1-tiwai@xxxxxxx Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> sound/usb/card.c | 2 ++ sound/usb/quirks-table.h | 21 +++++++++++++++++++++ sound/usb/usbaudio.h | 1 + 3 files changed, 24 insertions(+) I think it will, but can only hope that this time, it will lead to the solution. Thanks! -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
