http://bugzilla.kernel.org/show_bug.cgi?id=6315
------- Additional Comments From [EMAIL PROTECTED] 2006-04-21 01:03 ------- Daniele, thanks for your help, very much appreciated :) Frans, the fan behavior your describe suggests that something (BIOS? ACPI EC?) is accessing the ADM1032 chip in the background, bypassing the I/O region request and mutex which normally grant exclusive access to the i2c-i801 SMBus. This is likely to cause trouble if you are running "sensors" or any other tool accessing the ADM1032 chip in the regular way. Concurrent accesses to the ADM1032 chip will result in data corruption on the SMBus and/or lockups. Note that the Toshiba Satellite A40 originally didn't expose its SMBus device for the i2c-i801 to attach to. We added a PCI quirk to allow that, and with what we now know, it wasn't a safe decision. We may have to step back on this one (and possibly other similar quirks.) On a more general note, we have a problem on many systems with "something" (again, I guess BIOS or ACPI EC) accessing devices on the SMBus or I/O regions that are in use by hardware monitoring drivers. Without proper locking to grant exclusive access to these resources, we are in trouble, and many users reported problems on different systems already. We need to think about a general solution to this issue, suggestions are welcome. ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
