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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-07-22 19:32:00 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-07-22 19:32:00 +0100 |
| commit | 3384fb98845dc014770caa224d61a2effd258ca5 (patch) | |
| tree | 8189134a4938632e2d06e93af04c9fc1f3c2d4c9 /arch/powerpc/platforms/pseries/processor_idle.c | |
| parent | 8cfc545e0e3e6cc82acfdc79321b41eeeab0ca45 (diff) | |
| parent | ade7515fefad9af13f6dd469f35bb413b6a5b473 (diff) | |
Merge branch 'regulator-drivers' into regulator-next
Diffstat (limited to 'arch/powerpc/platforms/pseries/processor_idle.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/processor_idle.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/powerpc/platforms/pseries/processor_idle.c b/arch/powerpc/platforms/pseries/processor_idle.c index e61483e8e96..c71be66bd5d 100644 --- a/arch/powerpc/platforms/pseries/processor_idle.c +++ b/arch/powerpc/platforms/pseries/processor_idle.c @@ -99,15 +99,18 @@ out: static void check_and_cede_processor(void) { /* - * Interrupts are soft-disabled at this point, - * but not hard disabled. So an interrupt might have - * occurred before entering NAP, and would be potentially - * lost (edge events, decrementer events, etc...) unless - * we first hard disable then check. + * Ensure our interrupt state is properly tracked, + * also checks if no interrupt has occurred while we + * were soft-disabled */ - hard_irq_disable(); - if (!lazy_irq_pending()) + if (prep_irq_for_idle()) { cede_processor(); +#ifdef CONFIG_TRACE_IRQFLAGS + /* Ensure that H_CEDE returns with IRQs on */ + if (WARN_ON(!(mfmsr() & MSR_EE))) + __hard_irq_enable(); +#endif + } } static int dedicated_cede_loop(struct cpuidle_device *dev, |