IO_APIC_get_PCI_irq_vector
extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin);
EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
irq = IO_APIC_get_PCI_irq_vector(dev->bus->number,
irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
(*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus,