pci_find_next_ext_capability — Find an extended capability


int pci_find_next_ext_capability (struct pci_dev * dev,
 int start,
 int cap);


struct pci_dev * dev

PCI device to query

int start

address at which to start looking (0 to start at beginning of list)

int cap

capability code


Returns the address of the next matching extended capability structure within the device's PCI configuration space or 0 if the device does not support it. Some capabilities can occur several times, e.g., the vendor-specific capability, and this provides a way to find them all.