On Tue, Nov 18, 2008 at 08:17:42PM +0900, Robert Delahunt wrote: > How is it fixed? ACPI and sensors should be able to live together. If I > can't have one without the other, in my opinion, this is a blind spot for > both projects. Has anyone brought this up to the kernel ACPI developers to > see if they can "unhide" or "expose" the hardware monitoring?
Hitting thermal regulation hardware directly can cause problems if you're also using ACPI, since there's no way of implementing locking between the firmware and the operating system in this case. Since most thermal monitoring hardware is accessed using indexed registers, having two pieces of code trying to access the hardware simultaneously will give bogus values and potentially result in hardware damage. Many laptops therefore hide the smbus from the operating system. While it's possible to unhide them, it's not a good idea. -- Matthew Garrett | [EMAIL PROTECTED] -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
