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ALSA: hda: dinput_mux check

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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>
This commit is contained in:
Matthew Ranostay 2008-12-20 17:36:28 -05:00 committed by Takashi Iwai
parent 8326e32c1e
commit f8ccbf65af
1 changed files with 2 additions and 1 deletions
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3
sound/pci/hda/patch_sigmatel.c
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@ -3589,7 +3589,8 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
spec->mixers[spec->num_mixers++] = spec->kctls.list;
spec->input_mux = &spec->private_imux;
spec->dinput_mux = &spec->private_dimux;
if (!spec->dinput_mux)
spec->dinput_mux = &spec->private_dimux;
spec->sinput_mux = &spec->private_smux;
spec->mono_mux = &spec->private_mono_mux;
spec->amp_mux = &spec->private_amp_mux;