ALSA: hda - Add exception for volume-knob in snd_hda_get_connections()

Volume-knob widgets may have connections even if they have no CONN_LIST
cap bit.  Allow the query exceptionally in snd_hda_get_connections().

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

1 files changed, 4 insertions, 1 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b8c656c21feb..3a603cde8cc4 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -301,12 +301,15 @@ int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
         unsigned int parm;
         int i, conn_len, conns;
         unsigned int shift, num_elems, mask;
+        unsigned int wcaps;
         hda_nid_t prev_nid;
 
         if (snd_BUG_ON(!conn_list || max_conns <= 0))
                 return -EINVAL;
 
-        if ((get_wcaps(codec, nid) & AC_WCAP_CONN_LIST) == 0) {
+        wcaps = get_wcaps(codec, nid);
+        if (!(wcaps & AC_WCAP_CONN_LIST) &&
+            get_wcaps_type(wcaps) != AC_WID_VOL_KNB) {
                 snd_printk(KERN_WARNING "hda_codec: "
                            "connection list not available for 0x%x\n", nid);
                 return -EINVAL;