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.