struct pci_dev * pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev * from);
Iterates through the list of known PCI devices. If a PCI device is found with a matching vendor and device, a pointer to its device structure is returned. Otherwise, NULL is returned. A new search is initiated by passing NULL to the from argument. Otherwise if from is not NULL, searches continue from next device on the global list.
Do not use this function anymore, use pci_get_device instead, as the pci device returned by this function can disappear at any moment in time.