I've been using this driver for a while now, works fine (but not perfectly... dodgy BIOS).
From /var/log/messages:
```
May 1 19:16:06 fred kernel: it8613hwm0: <Hardware monitor on ITE SuperIO> at HWM ldn 0x04 on superio0
```
I'm running stable/13 on this machine but the patch is against current (and this compile-time tested only).
```
# devinfo -r
[...]
isab0
isa0
superio0
ACPI I/O ports:
0x2e-0x2f
it8613hwm0
ACPI I/O ports:
0xa35-0xa36
[...]
```