linux 按键中断，中断申请奇怪问题

菜鸟地等待

求教大神我在使用ret = request_irq(s3c2440irq.irqkey.irqnum,keyirq_fun,IRQF_TRIGGER_RISING,"gpio_key",NULL);在加载驱动时候会出现内核指针指向错误如Unable to handle kernel NULL pointer dereference at virtual addr各位有有没有遇到类似问题，
中断函数




static irqreturn_t keyirq_fun(int irq, void *dev_id)
{
    //struct s3c2440irq_dev *dev = dev_id;

    printk("key press down");

    return IRQ_RETVAL(IRQ_HANDLED);;
}
获取中断号函数

s3c2440irq.irqkey.irqnum = gpio_to_irq(s3c2440irq.irqkey.keyirq_gpio);

阿侑kevin

楼主发错版了吧，建议发到linux，硬件IO是否配置正确