TODO revision 1.5 
1Important things to make ACPI useful on more machines:
2
3* Split the Region initialization into two passes -- one that fills in
4  AddressSpace pointers, and one that calls _REG methods.  Right now we
5  can lose due to a _REG method for one Region calling a method that
6  accesses another Region that hasn't been fixed up yet.  (Affects
7  Sverre Froyen's HP Omnibook 6000.)
8
9* Fix problems with ACPI_PCI_FIXUP.  CardBus slots do not work in some
10  machines currently.  (Affects many machines.)
11
12* Add support for attaching acpiec devices early using the ECDT.  Some
13  systems need this because otherwise their _INI methods try to access
14  regions in the EC space before it's initialized.  (Affects Steve
15  Rumble's Thinkpad T23.)
16
17* Deal with the "implicit return" problem for older laptops.  (Mostly
18  affects older Toshiba laptops, like the Portege 7140.)
19
20* Support thermal levels and fan control in acpitz.
21
22- mycroft, 2003/11/03
23