Hi,
I am trying to get hardware sensors (i.e. cpu temp, fan speed, and
voltage sensors) working on an IBM eServer 335 system that is running
RedHat (Enterprise edition) with kernel 2.4.21 (2.4.21-27 actually - it
has lm sensors 2.6.5).
The driver for the sensors chip on this particular mainboard is found
using sensors-detect:
Use driver `i2c-piix4' for device 00:0f.0: ServerWorks CSB5 South Bridge
However, the driver failed to load with the following error:
i2c-core.o: i2c core module
i2c-dev.o: i2c /dev entries driver module
i2c-core.o: driver i2c-dev dummy driver registered.
i2c-piix4.o version 2.6.5 (20020915)
i2c-piix4.o: Found CSB5 device
dmi_scan.o version 2.6.5 (20020915)
dmi_scan.o: SM BIOS found
i2c-piix4.o: IBM Laptop detected; this module may corrupt
your serial eeprom! Refusing to load module!
i2c-piix4.o: Module insertion failed.
Obviously this machine is not an IBM Laptop! It is, in fact, a
rackmount server. My question is: is this machine still at risk of
this EEPROM corruption bug that is present in (what looks like
exclusively) certain models of IBM Thinkpads? I can easily comment out
this logic and recompile, but I really don't want to break my EEPROM!
Can anyone tell me with reasonable certainty that I won't break my
machine by forcibly installing this module? It looks like the new lm
sensors logic (like before) just doesn't like this machine because the
DMI vendor is IBM and the PCI Vendor ID is Intel:
if(dmi_ident[DMI_SYS_VENDOR] != NULL
&& strncmp(dmi_ident[DMI_SYS_VENDOR], "IBM", 3) == 0)
is_unsafe_smbus = 1;
together with:
if(ibm_dmi_probe() && PIIX4_dev->vendor == PCI_VENDOR_ID_INTEL)
I'd upgrade to a newer version of the linux kernel (with a newer
version of i2c), but other users of the machine have requested the
kernel version be kept for support reasons, if at all possible. RedHat
doesn't support the i2c-piix4.o module.
Any and all insight is greatly appreciated!
Thanks!
- Armen
