From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 15 Oct 2012 10:40:37 +0000 (+0200)
Subject: ALSA: usb-audio: Fix races at disconnection in mixer_quirks.c
X-Git-Tag: v3.2.34~73
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6415ce55f2430e38f674d8421511e489b2c71b0;p=pandora-kernel.git

ALSA: usb-audio: Fix races at disconnection in mixer_quirks.c

commit 888ea7d5ac6815ba16b3b3a20f665a92c7af6724 upstream.

Similar like the previous commit, cover with chip->shutdown_rwsem
and chip->shutdown checks.

Reported-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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