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ALSA: hda/generic - Check power state cap at updating the widget power 

The new widget power-saving tries to apply the power change no matter
whether the node has a power cap or not.  It's bad (although most of
codecs chip just ignore it).  Check the capability properly
beforehand.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-04-09 10:18:31 +02:00
parent 9efe2731db
commit 2206dc9492
1 changed files with 2 additions and 0 deletions
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2
sound/pci/hda/hda_generic.c
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@ -832,6 +832,8 @@ static hda_nid_t path_power_update(struct hda_codec *codec,
for (i = 0; i < path->depth; i++) {
nid = path->path[i];
if (!(get_wcaps(codec, nid) & AC_WCAP_POWER))
continue;
if (nid == codec->core.afg)
continue;
if (!allow_powerdown || is_active_nid_for_any(codec, nid))