-extern int atari_request_irq (unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),
- unsigned long flags, const char *devname, void *dev_id);
-extern void atari_free_irq (unsigned int irq, void *dev_id);
-extern void atari_enable_irq (unsigned int);
-extern void atari_disable_irq (unsigned int);
-extern int show_atari_interrupts (struct seq_file *, void *);