1. 根目录:
2. arch
3. arm
4. include
5. asm
6. hw_irq.h

/*
 * Nothing to see here yet
 */
#ifndef _ARCH_ARM_HW_IRQ_H
#define _ARCH_ARM_HW_IRQ_H

static inline void ack_bad_irq(int irq)
{
	extern unsigned long irq_err_count;
	irq_err_count++;
	pr_crit("unexpected IRQ trap at vector %02x\n", irq);
}

void set_irq_flags(unsigned int irq, unsigned int flags);

#define IRQF_VALID	(1 << 0)
#define IRQF_PROBE	(1 << 1)
#define IRQF_NOAUTOEN	(1 << 2)

#define ARCH_IRQ_INIT_FLAGS	(IRQ_NOREQUEST | IRQ_NOPROBE)

#endif