centos man page for pci_find_next_bus

PCI_FIND_NEXT_BUS(9)						Hardware Interfaces					      PCI_FIND_NEXT_BUS(9)

NAME
       pci_find_next_bus - begin or continue searching for a PCI bus

SYNOPSIS
       struct pci_bus * pci_find_next_bus(const struct pci_bus * from);

ARGUMENTS
       from
	   Previous PCI bus found, or NULL for new search.

DESCRIPTION
       Iterates through the list of known PCI buses. A new search is initiated by passing NULL as the from argument. Otherwise if from is not
       NULL, searches continue from next device on the global list.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      PCI_FIND_NEXT_BUS(9)