-If you own Force CPCI735 motherboard or other OSB4 based systems you may need
-to change the SMBus Interrupt Select register so the SMBus controller uses
-the SMI mode.
-
-1) Use lspci command and locate the PCI device with the SMBus controller:
- 00:0f.0 ISA bridge: ServerWorks OSB4 South Bridge (rev 4f)
- The line may vary for different chipsets. Please consult the driver source
- for all possible PCI ids (and lspci -n to match them). Lets assume the
- device is located at 00:0f.0.
-2) Now you just need to change the value in 0xD2 register. Get it first with
- command: lspci -xxx -s 00:0f.0
- If the value is 0x3 then you need to change it to 0x1
- setpci -s 00:0f.0 d2.b=1
-
-Please note that you don't need to do that in all cases, just when the SMBus is
-not working properly.
-
-
-Hardware-specific issues
-------------------------
-
-This driver will refuse to load on IBM systems with an Intel PIIX4 SMBus.
-Some of these machines have an RFID EEPROM (24RF08) connected to the SMBus,
-which can easily get corrupted due to a state machine bug. These are mostly
-Thinkpad laptops, but desktop systems may also be affected. We have no list
-of all affected systems, so the only safe solution was to prevent access to
-the SMBus on all IBM systems (detected using DMI data.)
-
-For additional information, read:
-http://www2.lm-sensors.nu/~lm78/cvs/lm_sensors2/README.thinkpad
+A few OSB4 southbridges are known to be misconfigured by the BIOS. In this
+case, you have you use the fix_hstcfg module parameter. Do not use it
+unless you know you have to, because in some cases it also breaks
+configuration on southbridges that don't need it.