/* * Interrupt handling in Real-Time. react to an RT-interrupt by toggling all * bits on the parallel port * * Sotlen from Michael Barabanov by Der Herr Hofrat, * (C) FSMLabs  2001. der.herr@hofr.at * Released under the GNU GENERAL PUBLIC LICENSE Version 2, June 1991 * Any use of this code must include this notice. */#include <rtl_core.h>#include <rtl_time.h>#include <asm/io.h>#include <rtl.h>#include "common.h"unsigned int intr_handler(unsigned int irq, struct pt_regs *regs){	outb(0x0ff,LPT); /* respond to an interrupt by toggling the databits*/	return 0;}int init_module(void){	rtl_request_irq (LPT_IRQ, intr_handler);	rtl_hard_enable_irq (LPT_IRQ);	return 0;} void cleanup_module(void){	rtl_free_irq(LPT_IRQ);}