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ARM/OMAP/wakeupgen: Convert to hotplug state machine 

Install the callbacks via the state machine.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20160906170457.32393-4-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2016-09-06 19:04:39 +02:00 committed by Thomas Gleixner
parent 657ebf7a23
commit a4fa9cc220
2 changed files with 14 additions and 22 deletions
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35
arch/arm/mach-omap2/omap-wakeupgen.c
View File

@ -322,34 +322,25 @@ static void irq_save_secure_context(void)
#endif
#ifdef CONFIG_HOTPLUG_CPU
static int irq_cpu_hotplug_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
static int omap_wakeupgen_cpu_online(unsigned int cpu)
{
unsigned int cpu = (unsigned int)hcpu;
/*
* Corresponding FROZEN transitions do not have to be handled,
* they are handled by at a higher level
* (drivers/cpuidle/coupled.c).
*/
switch (action) {
case CPU_ONLINE:
wakeupgen_irqmask_all(cpu, 0);
break;
case CPU_DEAD:
wakeupgen_irqmask_all(cpu, 1);
break;
}
return NOTIFY_OK;
wakeupgen_irqmask_all(cpu, 0);
return 0;
}
static struct notifier_block irq_hotplug_notifier = {
.notifier_call = irq_cpu_hotplug_notify,
};
static int omap_wakeupgen_cpu_dead(unsigned int cpu)
{
wakeupgen_irqmask_all(cpu, 1);
return 0;
}
static void __init irq_hotplug_init(void)
{
register_hotcpu_notifier(&irq_hotplug_notifier);
cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN, "arm/omap-wake:online",
omap_wakeupgen_cpu_online, NULL);
cpuhp_setup_state_nocalls(CPUHP_ARM_OMAP_WAKE_DEAD,
"arm/omap-wake:dead", NULL,
omap_wakeupgen_cpu_dead);
}
#else
static void __init irq_hotplug_init(void)

1
include/linux/cpuhotplug.h
View File

@ -21,6 +21,7 @@ enum cpuhp_state {
CPUHP_NET_MVNETA_DEAD,
CPUHP_CPUIDLE_DEAD,
CPUHP_ARM64_FPSIMD_DEAD,
CPUHP_ARM_OMAP_WAKE_DEAD,
CPUHP_WORKQUEUE_PREP,
CPUHP_POWER_NUMA_PREPARE,
CPUHP_HRTIMERS_PREPARE,