ALSA: usb-audio: Fix runtime PM unbalance
authorTakashi Iwai <tiwai@suse.de>
Wed, 19 Aug 2015 05:20:14 +0000 (07:20 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 13 Sep 2015 16:07:46 +0000 (09:07 -0700)
commit56577410e1e08afcc1a37d0b75d529e8be2f03d0
tree466606e3cb771164c2aa8e69f6436d6fc045b2f5
parent2f9de0cc23d064bcae6756976a7560a55290514e
ALSA: usb-audio: Fix runtime PM unbalance

commit 9003ebb13f61e8c78a641e0dda7775183ada0625 upstream.

The fix for deadlock in PM in commit [1ee23fe07ee8: ALSA: usb-audio:
Fix deadlocks at resuming] introduced a new check of in_pm flag.
However, the brainless patch author evaluated it in a wrong way
(logical AND instead of logical OR), thus usb_autopm_get_interface()
is wrongly called at probing, leading to unbalance of runtime PM
refcount.

This patch fixes it by correcting the logic.

Reported-by: Hans Yang <hansy@nvidia.com>
Fixes: 1ee23fe07ee8 ('ALSA: usb-audio: Fix deadlocks at resuming')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/usb/card.c