ALSA: hda - Fix error check from snd_hda_get_conn_index() in patch_cirrus.c

snd_hda_get_conn_index() returns a negative value while the current code
stores it in an unsigned int.  It must be stored in a signed integer.

Reported-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 47d6ffc9b5b5c34e4834fb25d163e2384ca0117e..d6c93d92b550559513b83de36c90a4c3ecad7699 100644 (file)
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -375,7 +375,7 @@ static int is_ext_mic(struct hda_codec *codec, unsigned int idx)
 static hda_nid_t get_adc(struct hda_codec *codec, hda_nid_t pin,
                         unsigned int *idxp)
 {
-       int i;
+       int i, idx;
        hda_nid_t nid;
 
        nid = codec->start_nid;
@@ -384,9 +384,11 @@ static hda_nid_t get_adc(struct hda_codec *codec, hda_nid_t pin,
                type = get_wcaps_type(get_wcaps(codec, nid));
                if (type != AC_WID_AUD_IN)
                        continue;
-               *idxp = snd_hda_get_conn_index(codec, nid, pin, false);
-               if (*idxp >= 0)
+               idx = snd_hda_get_conn_index(codec, nid, pin, false);
+               if (idx >= 0) {
+                       *idxp = idx;
                        return nid;
+               }
        }
        return 0;
 }