what is about SND_AC97_POWER_SAVE ?

[Alexey Fisher]

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Any body know what is about SND_AC97_POWER_SAVE?
it dasn't make any difference if this enabled or not.

echo 1 or 0 > /sys/modules/ac97_codec/parameters/powersave
keep power usage at 11.2W, "rmmod snd_intel8x0" make 10,7W
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