ALSA: usb-audio: Release components on probe errors

usb_audio_probe() can create USB-audio component resources before the
first interface is recorded in chip->num_interfaces.  If a later probe
step fails, the error path drops chip->active and frees the card directly
when no interfaces have been registered.

Normal disconnect first releases USB-audio components in a fixed order
before the card is freed.  The first-interface probe error path skipped
that sequence, so partially initialized PCM, endpoint, MIDI, media, or
mixer resources could be left for the card private_free path without their
disconnect handling having run.

Move the existing normal-disconnect component release sequence into a
helper and call it from the zero-interface probe error path before
snd_card_free().  Keep the normal disconnect ordering unchanged: PCM
streams, endpoint resources, MIDI 1.0 resources, MIDI 2.0 resources, media
device cleanup, then mixer resources.

Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Link: https://patch.msgid.link/20260618170026.192212-1-zzzccc427@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

0 files changed, 0 insertions, 0 deletions