From: Clemens Ladisch <clemens@ladisch.de>
Date: Mon, 17 Aug 2009 10:28:09 +0000 (+0200)
Subject: sound: snd_ctl_remove_user_ctl: prevent removal of kernel controls
X-Git-Tag: v2.6.32-rc1~732^2~17^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18dd0aa5afea7dc33953aa87de696e39074bbf78;p=pandora-kernel.git

sound: snd_ctl_remove_user_ctl: prevent removal of kernel controls

Ensure that userspace can remove only user controls.  Controls created
by kernel drivers must not be removed because they might be referenced
in calls to snd_ctl_notify().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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