IP27_HUB_IRQ_COUNT
domain = irq_domain_create_linear(fn, IP27_HUB_IRQ_COUNT,
static DECLARE_BITMAP(hub_irq_map, IP27_HUB_IRQ_COUNT);
level = find_first_zero_bit(hub_irq_map, IP27_HUB_IRQ_COUNT);
if (level >= IP27_HUB_IRQ_COUNT)