ALSA: usb-audio: validate full match when resolving quirk aliases

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get_alias_quirk() resolves a quirk for an aliased USB ID by scanning
usb_audio_ids[], but it currently checks only the vendor/product pair.

This is weak for quirk table entries that also depend on additional
USB_DEVICE_ID match fields, such as device or interface class,
subclass, protocol, interface number, or bcdDevice range.

Keep the aliased vid:pid as the lookup key, then validate only the
remaining match criteria of each candidate entry against the real
device/interface descriptors by clearing USB_DEVICE_ID_MATCH_DEVICE
from a temporary copy and passing it to usb_match_one_id().

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260318-alsa-usb-fix-quirk-alias-v3-1-bd3b17a32939@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Cássio Gabriel 2026-03-18 11:08:46 -03:00 • committed by Takashi Iwai

parent 785639b5bf

commit df3eec203b

1 changed files with 15 additions and 9 deletions

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sound/usb/card.c

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