IRQ_get_next
s_IRQ = IRQ_get_next(opp, &dst->servicing);
s_IRQ = IRQ_get_next(opp, &dst->servicing);
n_IRQ = IRQ_get_next(opp, &dst->raised);
irq = IRQ_get_next(opp, &dst->raised);
if (IRQ_get_next(opp, &dst->servicing) >= 0 &&
IRQ_get_next(opp, &dst->servicing);