Name
pci_bus_find_capability —
query for devices' capabilities
Synopsis
int pci_bus_find_capability (struct pci_bus * bus, unsigned int devfn, int cap);
Arguments
bus
the PCI bus to query
devfn
PCI device to query
cap
capability code
Description
Like pci_find_capability but works for pci devices that do not have a
pci_dev structure set up yet.
Returns the address of the requested capability structure within the
device's PCI configuration space or 0 in case the device does not
support it.