int request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
if (irq & IRQ_MACHSPEC)
return mach_request_irq(IRQ_IDX(irq), handler, flags, devname, dev_id);
if (irq < IRQ1 || irq > IRQ7) {
printk("%s: Incorrect IRQ %d from %s\n", __FUNCTION__, irq, devname);
return -ENXIO;
}
if (!(irq_list[irq].flags & IRQ_FLG_STD)) {
if (irq_list[irq].flags & IRQ_FLG_LOCK) {
printk("%s: IRQ %d from %s is not replaceable\n",
__FUNCTION__, irq, irq_list[irq].devname);
return -EBUSY;
}
if (flags & IRQ_FLG_REPLACE) {
printk("%s: %s can't replace IRQ %d from %s\n",
__FUNCTION__, devname, irq, irq_list[irq].devname);
return -EBUSY;
}
}
irq_list[irq].handler = handler;
irq_list[irq].flags = flags;
irq_list[irq].dev_id = dev_id;
irq_list[irq].devname = devname;
return 0;
}
int request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
if ((irq & IRQ_MACHSPEC) && mach_request_irq) {
return mach_request_irq(IRQ_IDX(irq), handler, flags,
devname, dev_id);
}
if (irq < 0 || irq >= NR_IRQS) {
printk("%s: Incorrect IRQ %d from %s\n", __FUNCTION__,
irq, devname);
return -ENXIO;
}
if (!(vec_list[irq].flags & IRQ_FLG_STD)) {
if (vec_list[irq].flags & IRQ_FLG_LOCK) {
printk("%s: IRQ %d from %s is not replaceable\n",
__FUNCTION__, irq, vec_list[irq].devname);
return -EBUSY;
}
if (flags & IRQ_FLG_REPLACE) {
printk("%s: %s can't replace IRQ %d from %s\n",
__FUNCTION__, devname, irq, vec_list[irq].devname);
return -EBUSY;
}
}
if (flags & IRQ_FLG_FAST) {
extern asmlinkage void fasthandler(void);
extern void set_evector(int vecnum, void (*handler)(void));
set_evector(irq, fasthandler);
}
vec_list[irq].handler = handler;
vec_list[irq].flags = flags;
vec_list[irq].dev_id = dev_id;
vec_list[irq].devname = devname;
return 0;
}
/*
* We will keep these functions until I have convinced Linus to move
* the declaration of them from include/linux/sched.h to
* include/asm/irq.h.
*/
int request_irq(unsigned int irq,
void (*handler) (int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
return mach_request_irq(irq, handler, flags, devname, dev_id);
}