diff options
| author | Takashi Iwai <tiwai@suse.de> | 2021-04-08 10:56:56 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-04-09 10:57:30 +0300 |
| commit | d763145312582c08c4e9ed99d61276cde8488256 (patch) | |
| tree | 7922baf73f4c8fe5dc7b0799b8f805bec5a9e1fb /sound/usb/card.c | |
| parent | 473d5ae82d73c3b21160b725af0e247fa94d7832 (diff) | |
| download | linux-d763145312582c08c4e9ed99d61276cde8488256.tar.xz | |
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@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/card.c')
| -rw-r--r-- | sound/usb/card.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c index 7b7526d3a56e..2f6a62416c05 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -713,6 +713,8 @@ static int usb_audio_probe(struct usb_interface *intf, quirk = get_alias_quirk(dev, id); if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) return -ENXIO; + if (quirk && quirk->ifnum == QUIRK_NODEV_INTERFACE) + return -ENODEV; err = snd_usb_apply_boot_quirk(dev, intf, quirk, id); if (err < 0) |