188 int irq_register(ul irq_num, void *arg, void (*handler)(ul irq_num, ul parameter, struct pt_regs *r…  in irq_register()  argument
193     if (irq_num >= 32 && irq_num < 0x80)  in irq_register()
194         p = &interrupt_desc[irq_num - 32];  in irq_register()
195     else if (irq_num >= 150 && irq_num < 200)  in irq_register()
196         p = &local_apic_interrupt_desc[irq_num - 150];  in irq_register()
199         kerror("irq_register(): invalid irq num: %ld.", irq_num);  in irq_register()
215     p->controller->install(irq_num, arg);  in irq_register()
217     p->controller->enable(irq_num);  in irq_register()
229 int irq_unregister(ul irq_num)  in irq_unregister()  argument
231     irq_desc_t *p = &interrupt_desc[irq_num - 32];  in irq_unregister()
232     p->controller->disable(irq_num);  in irq_unregister()
233     p->controller->uninstall(irq_num);  in irq_unregister()