diff options
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 971d65c253a..ba9e7ef92be 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -181,12 +181,16 @@ void cpu_idle_wait(void) EXPORT_SYMBOL_GPL(cpu_idle_wait); /* - * This is our default idle handler. We need to disable - * interrupts here to ensure we don't miss a wakeup call. + * This is our default idle handler. */ + +void (*arm_pm_idle)(void); + static void default_idle(void) { - if (!need_resched()) + if (arm_pm_idle) + arm_pm_idle(); + else arch_idle(); local_irq_enable(); } @@ -215,6 +219,10 @@ void cpu_idle(void) cpu_die(); #endif + /* + * We need to disable interrupts here + * to ensure we don't miss a wakeup call. + */ local_irq_disable(); #ifdef CONFIG_PL310_ERRATA_769419 wmb(); @@ -222,19 +230,18 @@ void cpu_idle(void) if (hlt_counter) { local_irq_enable(); cpu_relax(); - } else { + } else if (!need_resched()) { stop_critical_timings(); if (cpuidle_idle_call()) pm_idle(); start_critical_timings(); /* - * This will eventually be removed - pm_idle - * functions should always return with IRQs - * enabled. + * pm_idle functions must always + * return with IRQs enabled. */ WARN_ON(irqs_disabled()); + } else local_irq_enable(); - } } leds_event(led_idle_end); rcu_idle_exit(); |