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[ALSA] hda-intel - fix a race in dynamic power managment 

codec->power_transition is supposed to be true while codec is going
to be shut off if in the mean time somebody calls snd_hda_power_up,
hda_power_work will not shut down the codec, but nether will clear
codec->power_transition, thus it stays on forever. Fix this.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Maxim Levitsky 2007-09-03 15:26:57 +02:00 committed by Jaroslav Kysela
parent b7e054a76f
commit 2e4924628a
1 changed files with 3 additions and 1 deletions
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4
sound/pci/hda/hda_codec.c
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@ -2195,8 +2195,10 @@ static void hda_power_work(struct work_struct *work)
struct hda_codec *codec =
container_of(work, struct hda_codec, power_work.work);
if (!codec->power_on || codec->power_count)
if (!codec->power_on || codec->power_count) {
codec->power_transition = 0;
return;
}
hda_call_codec_suspend(codec);
if (codec->bus->ops.pm_notify)