linux中断入口函数的传入参数

microcreat

我在网上找到2个中断入口函数
static irqreturn_t hold_isr(int irq, void *dev_id)
{
    int state;
    mdelay(5);
    state = gpio_get_value(HOLD_IRQ);
    if (state == 1) {
        disable_irq(irq);
        schedule_work(&hold_wq);
    }
    return IRQ_HANDLED;
}

static irqreturn_t pxa_rtc_tickirq(int irq, void *dev_id, struct pt_regs *regs)
{
         unsigned long num = 0, events = RTC_IRQF;
         /*
          * If we match for the first time, the periodic interrupt flag won't
          * be set.  If it is, then we did wrap around (very unlikely but
          * still possible) and compute the amount of missed periods.
          * The match reg is updated only when the data is actually retrieved
          * to avoid unnecessary interrupts.
          */
         OSSR = OSSR_M1; /* clear match on timer1 */
         OSMR1 = TIMER_FREQ/rtc_freq + OSCR;
         num++;
         events |= RTC_PF;

         /* update irq data & counter */
         rtc_update(num, events);
         return IRQ_HANDLED;
}


为什么这2个函数的中断传入参数不同呢?