Hi All, This series changes the handling of ACPI power resources so as to track the state of each power resource in the kernel in addition to using reference counting instead of relying on the values returned by the _STA objects of power resources. The underlying issue is that on some systems the _STA always returns the same value for certain power resources even after changing their state with _ON or _OFF, so it is not reliable in general. Patch [1/3] changes the data type used for representing the state of an ACPI power resources to u8 (cosmetics). Patch [2/3] introduces the power resource state tracking (refer to the changelog for details). Patch [3/3] simplifies turning off the unused power resources with the help of the state tracking mechanism (refer to the changelog for details). The series is not top of the patch at https://patchwork.kernel.org/project/linux-acpi/patch/11762320.O9o76ZdvQC@kreacher/ which is going to be pushed as a fix for 5.13-rc. Thanks!
