pci_get_class — begin or continue searching for a PCI device by class
|unsigned int class,|
|struct pci_dev * from|
unsigned int class
search for a PCI device with this class designation
struct pci_dev * from
Previous PCI device found in search, or
NULL for new search.
Iterates through the list of known PCI devices. If a PCI device is
found with a matching
class, the reference count to the device is
incremented and a pointer to its device structure is returned.
NULL is returned.
A new search is initiated by passing
NULL as the
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