fmh_gpib_interrupt
retval = request_irq(irq, fmh_gpib_interrupt, IRQF_SHARED, pdev->name, board);
retval = request_irq(pci_device->irq, fmh_gpib_interrupt, IRQF_SHARED,
static irqreturn_t fmh_gpib_interrupt(int irq, void *arg);
fmh_gpib_interrupt(0, board);