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ALSA: usb-audio: Use rwsem for disconnect protection
authorTakashi Iwai <tiwai@suse.de>
Mon, 15 Oct 2012 10:16:02 +0000 (12:16 +0200)
committerBen Hutchings <ben@decadent.org.uk>
Fri, 16 Nov 2012 16:46:49 +0000 (16:46 +0000)
commit 34f3c89fda4fba9fe689db22253ca8db2f5e6386 upstream.

Replace mutex with rwsem for codec->shutdown protection so that
concurrent accesses are allowed.

Also add the protection to snd_usb_autosuspend() and
snd_usb_autoresume(), too.

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>

No differences found
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