From: Mengdong Lin <mengdong.lin@intel.com>
Date: Thu, 7 Mar 2013 19:11:05 +0000 (-0500)
Subject: ALSA: hda - check NULL pointer when creating SPDIF PCM switch
X-Git-Tag: v3.9-rc2~10^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c7a548a70a44269266858f65c3b5fc9c3ace057;p=pandora-kernel.git

ALSA: hda - check NULL pointer when creating SPDIF PCM switch

If the new control cannot be created, this function will return to avoid
snd_hda_ctl_add dereferencing a NULL control pointer.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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