init_irq_alloc_info
extern void init_irq_alloc_info(struct irq_alloc_info *info,
init_irq_alloc_info(info, NULL);
init_irq_alloc_info(alloc, NULL);
init_irq_alloc_info(arg, NULL);
init_irq_alloc_info(&info, NULL);
init_irq_alloc_info(&info, NULL);
init_irq_alloc_info(&info, cpumask_of(cpu));
init_irq_alloc_info(&info, NULL);