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>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index e2941cd..7ee4d4d 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -3589,7 +3589,8 @@
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;