Why we put FAN to full speed in its suspend callback

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Hi,

I was trying to minimize system suspend time and it turned out there are
firmwares that would do crazy things like delaying 10ms in FAN's power on
control method. So I wonder why do we want to put the FAN into ACPI D0
state when we are going to enter a sleep state? The code seems to be
written according to Pavel's comment here:
https://bugzilla.kernel.org/show_bug.cgi?id=5000#c6
It would be great to understand why and remove that operation if
possible, thanks for reading and taking your time bringing back your
ancient memory :-)
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