09c22c66e1
ACPI specification sates that if P_LVL2_LAT > 100, then a system doesn't support C2; if P_LVL3_LAT > 1000, then C3 is not supported. But there are no such rules for Cx state data returned by _CST. If a state is not supported it should not be included into the return package. In other words, any latency value returned by _CST is valid, it's up to the OS and/or user to decide whether to use it. Submitted by: nork Suggested by: mav MFC after: 1 week