suse man page for pci_get_domain_bus_and_slot

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 2.6.					     July 2010						   PCI_GET_DOMAIN_BUS_A(9)