static int
__irq_startup_managed(struct irq_desc *desc, struct cpumask *aff, bool force)
{
struct irq_data *d = irq_desc_get_irq_data(desc);
if (!irqd_affinity_is_managed(d))
return IRQ_STARTUP_NORMAL;
irqd_clr_managed_shutdown(d);
if (cpumask_any_and(aff, cpu_online_mask) >= nr_cpu_ids) {
/*
* Catch code which fiddles with enable_irq() on a managed
* and potentially shutdown IRQ. Chained interrupt
* installment or irq auto probing should not happen on
* managed irqs either.
*/
if (WARN_ON_ONCE(force))
return IRQ_STARTUP_ABORT;
/*
* The interrupt was requested, but there is no online CPU
* in it's affinity mask. Put it into managed shutdown
* state and let the cpu hotplug mechanism start it up once
* a CPU in the mask becomes available.
*/
return IRQ_STARTUP_ABORT;
}
/*
* Managed interrupts have reserved resources, so this should not
* happen.
*/
if (WARN_ON(irq_domain_activate_irq(d, false)))
return IRQ_STARTUP_ABORT;
return IRQ_STARTUP_MANAGED;
}
int irq_activate(struct irq_desc *desc)
{
struct irq_data *d = irq_desc_get_irq_data(desc);
if (!irqd_affinity_is_managed(d))
return irq_domain_activate_irq(d, false);
return 0;
}
int irq_startup(struct irq_desc *desc, bool resend)
{
int ret = 0;
irq_state_clr_disabled(desc);
desc->depth = 0;
irq_domain_activate_irq(&desc->irq_data);
if (desc->irq_data.chip->irq_startup) {
ret = desc->irq_data.chip->irq_startup(&desc->irq_data);
irq_state_clr_masked(desc);
} else {
irq_enable(desc);
}
if (resend)
check_irq_resend(desc);
return ret;
}
