unsigned long mask;

    mask = probe_irq_on( );

    outb_p(0x10,short_base+2); /* enable reporting */

    outb_p(0x00,short_base);

    /* clear the bit */

    outb_p(0xFF,short_base);

    /* set the bit: interrupt! */

    outb_p(0x00,short_base+2); /* disable reporting */

    udelay(5); /* give it some time */

    short_irq = probe_irq_off(mask);

    if (short_irq = = 0) { /* none of them? */

    printk(KERN_INFO "short: no irq reported by probe\n");

    short_irq = -1;