diff --git a/drivers/comedi/drivers/comedi_parport.c b/drivers/comedi/drivers/comedi_parport.c
index 57ee3f9dfba2..94284ff157ac 100644
--- a/drivers/comedi/drivers/comedi_parport.c
+++ b/drivers/comedi/drivers/comedi_parport.c
@@ -243,7 +243,8 @@ static int parport_attach(struct comedi_device *dev,
 	outb(0, dev->iobase + PARPORT_DATA_REG);
 	outb(0, dev->iobase + PARPORT_CTRL_REG);
 
-	if (it->options[1]) {
+	/* only ISA interrupts are valid on a parallel port */
+	if (it->options[1] >= 1 && it->options[1] <= 15) {
 		ret = request_irq(it->options[1], parport_interrupt, 0,
 				  dev->board_name, dev);
 		if (ret == 0)