tree 874d51f7408229396b15dd1cbe76e0cc52744b87
parent 52c324f8a87b336496d0f5e9d8dff1aa32bb08cd
author Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1398896044 +0200
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1398896044 +0200

cpuidle / menu: Return (-1) if there are no suitable states

If there is a PM QoS latency limit and all of the sufficiently shallow
C-states are disabled, the cpuidle menu governor returns 0 which on
some systems is CPUIDLE_DRIVER_STATE_START and shouldn't be returned
if that C-state has been disabled.

Fix the issue by modifying the menu governor to return (-1) in such
situations.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>