ALSA: hda - Add sanity check for storing the user-defined pin configs

Check whether the given NID is a pin widget before storing the
user-defined pin configs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 94ae69f20925..d02ea8926e7e 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -824,6 +824,9 @@ int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
         struct hda_pincfg *pin;
         unsigned int oldcfg;
 
+        if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
+                return -EINVAL;
+
         oldcfg = snd_hda_codec_get_pincfg(codec, nid);
         pin = look_up_pincfg(codec, list, nid);
         if (!pin) {