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ALSA: hda - Skip pin capability sanity check for bogus values

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Some old codecs like ALC880 seem to give a bogus pin capability value 0
occasionally.  This breaks the new sanity check in snd_hda_set_pin_ctl().
Skip the sanity checks in such a case.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-04-20 13:08:40 +02:00
parent 4740860b53
commit 6942c103fb
1 changed files with 2 additions and 2 deletions
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4
sound/pci/hda/hda_codec.c
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@ -4827,14 +4827,14 @@ int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
{
if (val) {
unsigned int cap = snd_hda_query_pin_caps(codec, pin);
if (val & AC_PINCTL_OUT_EN) {
if (cap && (val & AC_PINCTL_OUT_EN)) {
if (!(cap & AC_PINCAP_OUT))
val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
else if ((val & AC_PINCTL_HP_EN) &&
!(cap & AC_PINCAP_HP_DRV))
val &= ~AC_PINCTL_HP_EN;
}
if (val & AC_PINCTL_IN_EN) {
if (cap && (val & AC_PINCTL_IN_EN)) {
if (!(cap & AC_PINCAP_IN))
val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN);
}