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/**

 * pci_swizzle_interrupt_pin - swizzle INTx for device behind bridge

 * @dev: the PCI device

 * @pin: the INTx pin (1=INTA, 2=INTB, 3=INTD, 4=INTD)

 *

 * Perform INTx swizzling for a device behind one level of bridge.  This is

 * required by section 9.1 of the PCI-to-PCI bridge specification for devices

 * behind bridges on add-in cards.  For devices with ARI enabled, the slot

 * number is always 0 (see the Implementation Note in section 2.2.8.1 of

 * the PCI Express Base Specification, Revision 2.1)

 */

u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin)

{

    int slot;

 //   if (pci_ari_enabled(dev->bus))

 //       slot = 0;

 //   else

        slot = PCI_SLOT(dev->devfn);

    return (((pin - 1) + slot) % 4) + 1;

}