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ALSA: usb-audio: Use rwsem for disconnect protection
authorTakashi Iwai <tiwai@suse.de>
Wed, 7 Nov 2012 11:44:10 +0000 (12:44 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Nov 2012 21:14:22 +0000 (13:14 -0800)
commit14565776bea2c57d2f8d1cd7aeee6a0723ac2a05
treeb4bfbe23023910f19a5aa5dfba340b08bf4816b9tree | snapshot
parentea7b69a0b6816926e85cedbe5e1b1b8d3e2e5500commit | diff
ALSA: usb-audio: Use rwsem for disconnect protection

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/usb/card.c diff | blob | history
sound/usb/mixer.c diff | blob | history
sound/usb/pcm.c diff | blob | history
sound/usb/usbaudio.h diff | blob | history
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