input_unregister_device(&mk712_dev); free_irq(mk712_irq, &mk712_dev);
input_unregister_device(mk712_dev); free_irq(mk712_irq, mk712_dev);
static void __exit mk712_exit(void){	input_unregister_device(&mk712_dev);	free_irq(mk712_irq, &mk712_dev);	release_region(mk712_io, 8);}