use a different mechanism for setting warning flags, and using
WARNS here only has null or negative effects.
Submitted by: bde (I think it means "submitted")
settings and is an older version of the same design used for ICH SpeedStep.
It is only known to be available on PIIX4 chipsets.
Many thanks to Bruno Ducrot for writing the driver and Jon Noack for
testing.
Submitted by: Bruno Ducrot