From f8ccbf65afde5df81a6238b9dc92868fbbd397f7 Mon Sep 17 00:00:00 2001
From: Matthew Ranostay <mranostay@embeddedalley.com>
Date: Sat, 20 Dec 2008 17:36:28 -0500
Subject: [PATCH] ALSA: hda: dinput_mux check

Add check to determine if dinput_mux is set by any of patch_stac*() functions,
otherwise a invalid pointer my be referenced causing gibberish to mixer values.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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