From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 12 Oct 2012 13:07:34 +0000 (+0200)
Subject: ALSA: PCM: Fix some races at disconnection
X-Git-Tag: v3.2.34~76
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=700949d473671e3b20434d5a4cde71a04db88787;p=pandora-kernel.git

ALSA: PCM: Fix some races at disconnection

commit 9b0573c07f278e9888c352aa9724035c75784ea0 upstream.

Fix races at PCM disconnection:
- while a PCM device is being opened or closed
- while the PCM state is being changed without lock in prepare,
  hw_params, hw_free ops

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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