On Thu, Nov 06, 2008 at 02:12:52PM +0800, Zhao Yakui wrote: > On your box after the i2c-i801 driver is loaded, the smbus controller > will be used by the AML code and i2c-i801 driver. Unfortunately there is > no synchronization between them. IMO this is the BIOS fault. The SMbus > will be accessed by the two different modules. But it is exported by > BIOS. No, loading i2c-i801 is harmless. The breakage occurs when you attempt to drive the smbus. > So the better solution is that: > a. SMBus is hidden in BIOS. In such case the Linux OS can't detect > the SMbus controller . Of course it won't try to load the device driver > for it. > b. Linux OS won't load the device driver for it. The solution is for users not to load smbus drivers unless they know for certain that it's safe to do so, or alternatively for us to refuse to load i2c drivers if they overlap with ACPI resource allocations. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
