pci_find_next_ext_capability - Find an extended capability
int pci_find_next_ext_capability(struct pci_dev * dev, int start, int cap);
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.
|January 2017||Kernel Hackers Manual 4.8.|