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ALSA: hda/generic - Make snd_hda_gen_path_power_filter() always applicable 

Add the check of power_save_node flag at the beginning of the function
so that it skips the rest if the flag isn't set.  In this way, we can
call this function safely no matter whether the widget power-saving is
really used or not.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-04-09 10:25:03 +02:00
parent d5ac0100a9
commit b6c09b3c7b
1 changed files with 4 additions and 0 deletions
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4
sound/pci/hda/hda_generic.c
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@ -4703,6 +4703,10 @@ unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec,
hda_nid_t nid,
unsigned int power_state)
{
struct hda_gen_spec *spec = codec->spec;
if (!spec->power_down_unused && !codec->power_save_node)
return power_state;
if (power_state != AC_PWRST_D0 || nid == codec->core.afg)
return power_state;
if (get_wcaps_type(get_wcaps(codec, nid)) >= AC_WID_POWER)