centos man page for pci_get_device

PCI_GET_DEVICE(9)						Hardware Interfaces						 PCI_GET_DEVICE(9)

NAME
       pci_get_device - begin or continue searching for a PCI device by vendor/device id

SYNOPSIS
       struct pci_dev * pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev * from);

ARGUMENTS
       vendor
	   PCI vendor id to match, or PCI_ANY_ID to match all vendor ids

       device
	   PCI device id to match, or PCI_ANY_ID to match all device ids

       from
	   Previous PCI device found in search, or NULL for new search.

DESCRIPTION
       Iterates through the list of known PCI devices. If a PCI device is found with a matching vendor and device, the reference count to the
       device is incremented and a pointer to its device structure is returned. Otherwise, NULL is returned. 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. The reference count for
       from is always decremented if it is not NULL.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 PCI_GET_DEVICE(9)