From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 3 Dec 2012 10:12:46 +0000 (+0100)
Subject: ALSA: usb-audio: Avoid autopm calls after disconnection
X-Git-Tag: v3.2.36~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4c47aec8b8f1336f825df3f2941f5c79c2d30dd;p=pandora-kernel.git

ALSA: usb-audio: Avoid autopm calls after disconnection

commit 59866da9e4ae54819e3c4e0a8f426bdb0c2ef993 upstream.

Add a similar protection against the disconnection race and the
invalid use of usb instance after disconnection, as well as we've done
for the USB audio PCM.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=51201

Reviewd-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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