centos man page for pci_find_next_ext_capability

PCI_FIND_NEXT_EXT_CA(9) 					Hardware Interfaces					   PCI_FIND_NEXT_EXT_CA(9)

NAME
       pci_find_next_ext_capability - Find an extended capability

SYNOPSIS
       int pci_find_next_ext_capability(struct pci_dev * dev, int start, int cap);

ARGUMENTS
       dev
	   PCI device to query

       start
	   address at which to start looking (0 to start at beginning of list)

       cap
	   capability code

DESCRIPTION
       Returns the address of the next matching extended capability structure within the device's PCI configuration space or 0 if the device does
       not support it. Some capabilities can occur several times, e.g., the vendor-specific capability, and this provides a way to find them all.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   PCI_FIND_NEXT_EXT_CA(9)