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

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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>
This commit is contained in:
Takashi Iwai 2009-07-27 12:56:26 +02:00
parent a22d543a95
commit 1ba7a7c650
1 changed files with 4 additions and 1 deletions
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5
sound/pci/hda/hda_codec.c
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@ -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;