PCI_BUS_FIND_CAPABIL(9)                Hardware Interfaces                PCI_BUS_FIND_CAPABIL(9)



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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   PCI_BUS_FIND_CAPABIL(9)