+int cia_request_irq(struct ciabase *base, unsigned int irq,
+ irqreturn_t (*handler)(int, void *, struct pt_regs *),
+ unsigned long flags, const char *devname, void *dev_id)
+{
+ unsigned char mask;
+
+ base->irq_list[irq].handler = handler;
+ base->irq_list[irq].flags = flags;
+ base->irq_list[irq].dev_id = dev_id;
+ base->irq_list[irq].devname = devname;
+
+ /* enable the interrupt */
+ mask = 1 << irq;
+ cia_set_irq(base, mask);
+ cia_able_irq(base, CIA_ICR_SETCLR | mask);
+ return 0;
+}
+
+void cia_free_irq(struct ciabase *base, unsigned int irq, void *dev_id)
+{
+ if (base->irq_list[irq].dev_id != dev_id)
+ printk("%s: removing probably wrong IRQ %i from %s\n",
+ __FUNCTION__, base->cia_irq + irq,
+ base->irq_list[irq].devname);
+
+ base->irq_list[irq].handler = NULL;
+ base->irq_list[irq].flags = 0;
+
+ cia_able_irq(base, 1 << irq);
+}
+