PCI_GET_DOMAIN_BUS_A(9)                Hardware Interfaces                PCI_GET_DOMAIN_BUS_A(9)



NAME
       pci_get_domain_bus_and_slot - locate PCI device for a given PCI domain (segment), bus, and
       slot

SYNOPSIS
       struct pci_dev * pci_get_domain_bus_and_slot(int domain, unsigned int bus,
                                                    unsigned int devfn);

ARGUMENTS
       domain
           PCI domain/segment on which the PCI device resides.

       bus
           PCI bus on which desired PCI device resides

       devfn
           encodes number of PCI slot in which the desired PCI device resides and the logical
           device number within that slot in case of multi-function devices.

DESCRIPTION
       Given a PCI domain, bus, and slot/function number, the desired PCI device is located in
       the list of PCI devices. If the device is found, its reference count is increased and this
       function returns a pointer to its data structure. The caller must decrement the reference
       count by calling pci_dev_put. If no device is found, NULL is returned.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   PCI_GET_DOMAIN_BUS_A(9)