pci_get_device_reverse — begin or continue searching for a PCI device by vendor/device id
struct pci_dev * pci_get_device_reverse ( | unsigned int | vendor, |
unsigned int | device, | |
struct pci_dev * | from) ; |
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.
Iterates through the list of known PCI devices in the reverse order of
pci_get_device.
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
.