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[ALSA] hda-intel - Avoid unnecessary work scheduling

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Avoid unnecessary work scheduling for power-off.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Takashi Iwai 2007-08-16 16:35:33 +02:00 committed by Jaroslav Kysela
parent 676a9b53dc
commit a221e287ab
2 changed files with 9 additions and 4 deletions
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10
sound/pci/hda/hda_codec.c
View file

@ -1664,6 +1664,7 @@ static void hda_call_codec_suspend(struct hda_codec *codec)
#ifdef CONFIG_SND_HDA_POWER_SAVE
cancel_delayed_work(&codec->power_work);
codec->power_on = 0;
codec->power_transition = 0;
#endif
}
@ -2211,7 +2212,7 @@ static void hda_keep_power_on(struct hda_codec *codec)
void snd_hda_power_up(struct hda_codec *codec)
{
codec->power_count++;
if (codec->power_on)
if (codec->power_on || codec->power_transition)
return;
codec->power_on = 1;
@ -2219,16 +2220,19 @@ void snd_hda_power_up(struct hda_codec *codec)
codec->bus->ops.pm_notify(codec);
hda_call_codec_resume(codec);
cancel_delayed_work(&codec->power_work);
codec->power_transition = 0;
}
void snd_hda_power_down(struct hda_codec *codec)
{
--codec->power_count;
if (!codec->power_on || codec->power_count)
if (!codec->power_on || codec->power_count || codec->power_transition)
return;
if (power_save)
if (power_save) {
codec->power_transition = 1; /* avoid reentrance */
schedule_delayed_work(&codec->power_work,
msecs_to_jiffies(power_save * 1000));
}
}
int snd_hda_check_amp_list_power(struct hda_codec *codec,

3
sound/pci/hda/hda_codec.h
View file

@ -586,7 +586,8 @@ struct hda_codec {
struct snd_hwdep *hwdep; /* assigned hwdep device */
#ifdef CONFIG_SND_HDA_POWER_SAVE
int power_on; /* current (global) power-state */
unsigned int power_on :1; /* current (global) power-state */
unsigned int power_transition :1; /* power-state in transition */
int power_count; /* current (global) power refcount */
struct delayed_work power_work; /* delayed task for powerdown */
#endif