IRQD_TRIGGER_MASK
rc = request_irq(r->start, opal_interrupt, r->flags & IRQD_TRIGGER_MASK,
return __irqd_to_state(d) & IRQD_TRIGGER_MASK;
__irqd_to_state(d) &= ~IRQD_TRIGGER_MASK;
__irqd_to_state(d) |= type & IRQD_TRIGGER_MASK;
IRQD_TRIGGER_MASK | IRQD_LEVEL);
irqd_clear(&desc->irq_data, IRQD_TRIGGER_MASK);