ALSA: core: Fix unintuitive behavior of snd_power_ref_and_wait()

snd_power_ref_and_wait() takes the power refcount and doesn't leave it
no matter whether it returns an error or not.  However, the majority
of callers don't expect but just returns without unreferencing in the
caller side upon errors.

For addressing the potential refcount unbalance, rather correct the
behavior of snd_power_ref_wait() to unreference upon returning an
error.

Note that the problem above is likely negligible; the function returns
an error only when the sound card is being shutdown, hence it doesn't
matter about the power refcount any longer at such a state.

Fixes: e94fdbd7b25d ("ALSA: control: Track in-flight control read/write/tlv accesses")
Reported-by: WenTao Liang <vulab@iscas.ac.cn>
Closes: https://lore.kernel.org/20260612022121.14329-1-vulab@iscas.ac.cn
Link: https://patch.msgid.link/20260614090507.772540-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

0 files changed, 0 insertions, 0 deletions