Messages in this thread | | | Date | Sun, 16 Aug 2009 14:38:46 +0100 | From | Alan Cox <> | Subject | Re: [BUG] [hwmon] linux 2.6.31-rc6 regression |
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> > The hwmon driver is attempting to allocate a region that's also used by > > your ACPI firmware. There's no way to synchronise access between the > > kernel and the firmware, so allowing both is potentially racy - we've > > seen numerous cases where the combination results in the system > > incorrectly generating critical temperatuer shutdowns, for instance, > > when some other indexed access gets interpreted as the temperature or > > when the hwmon chip's state machine is confused. The failure of hwmon to > > bind is a feature here, not a bug. You can override it with > > acpi_enforce_resources=no on the kernel command line. > > But we don't introduce »features« that break hardware monitoring on > numerous machines in rc6 normally, IIRC. > If this so important and critical to you, than just add a »hyperstrict« > parameter to acpi_enforce_resources or make »lax« the default.
This is a bug fix not a feature - clashing hwmon and ACPI can seriously screw up a system, cause it to do things like shutdown randomly and the like.
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