原创 SA_INTERRUPT 中断问题

在比较新的kernel上linux-2.6.24，request_irq不支持这个宏了，那么用什么宏可以代替它呢？
如：
#define IRQF_DISABLED       0x00000020
#define IRQF_SAMPLE_RANDOM  0x00000040
#define IRQF_SHARED     0x00000080
#define IRQF_PROBE_SHARED   0x00000100
#define IRQF_TIMER      0x00000200
#define IRQF_PERCPU     0x00000400
#define IRQF_NOBALANCING    0x00000800
#define IRQF_IRQPOLL        0x00001000

http://linux.chinaunix.net/bbs/archiver/tid-1057312.html

看看 2.6.12 and 2.6.28 的区别

/*
* Have got an event to handle:
*/
fastcall int handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
                                struct irqaction *action)
{
        int ret, retval = 0, status = 0;

        if (!(action->flags & SA_INTERRUPT))
                local_irq_enable();

        do {
                ret = action->handler(irq, action->dev_id, regs);
                if (ret == IRQ_HANDLED)
                        status |= action->flags;
                retval |= ret;
                action = action->next;
        } while (action);

        if (status & SA_SAMPLE_RANDOM)
                add_interrupt_randomness(irq);
        local_irq_disable();

        return retval;
}



/**
* handle_IRQ_event - irq action chain handler
* @irq:        the interrupt number
* @action:        the interrupt action chain for this irq
*
* Handles the action chain of an irq event
*/
irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
{
        irqreturn_t ret, retval = IRQ_NONE;
        unsigned int status = 0;

        if (!(action->flags & IRQF_DISABLED))
                local_irq_enable_in_hardirq();

        do {
                ret = action->handler(irq, action->dev_id);
                if (ret == IRQ_HANDLED)
                        status |= action->flags;
                retval |= ret;
                action = action->next;
        } while (action);

        if (status & IRQF_SAMPLE_RANDOM)
                add_interrupt_randomness(irq);
        local_irq_disable();

        return retval;
}