From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 16 Sep 2010 21:06:50 +0000 (+0200)
Subject: ALSA: pcm - Fix race with proc files
X-Git-Tag: v2.6.36-rc5~15^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=901d46d5a8eb821b03ca9e8cf005beb0c92f31ea;p=pandora-kernel.git

ALSA: pcm - Fix race with proc files

The PCM proc files may open a race against substream close, which can
end up with an Oops.  Use the open_mutex to protect for it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
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