[alsa-devel] [PATCH] hda: dinput_mux check

[Matthew Ranostay]

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 at embeddedalley.com>
---
diff --git a/pci/hda/patch_sigmatel.c b/pci/hda/patch_sigmatel.c
index 70181d5..fa87893 100644
--- a/pci/hda/patch_sigmatel.c
+++ b/pci/hda/patch_sigmatel.c
@@ -3601,7 +3601,8 @@ 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;