This is a driver for Acer Aspire One netbooks. It allows to access
the temperature sensor and to control the fan.

After loading this driver the BIOS is still in control of the fan.
To let the kernel handle the fan, do:
echo -n enabled > /sys/class/thermal/thermal_zone0/mode

For more information about this driver see
<http://piie.net/files/acerhdf_README.txt>

If you have an Acer Aspire One netbook, say Y or M
here.