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c24d75b729
commit 3836785a1bdcd6706c68ad46bf53adc0b057b310 upstream. 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> [shilpab: Backport to 3.10.y - adjust context - add a check if 'next_state' is less than 0 in 'cpuidle_idle_call()', this ensures that we exit 'cpuidle_idle_call()' if governor->select() returns negative value] Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| governors | ||
| coupled.c | ||
| cpuidle-calxeda.c | ||
| cpuidle-kirkwood.c | ||
| cpuidle.c | ||
| cpuidle.h | ||
| driver.c | ||
| governor.c | ||
| Kconfig | ||
| Makefile | ||
| sysfs.c | ||