efi_devpath_is_prefix
bool efi_devpath_is_prefix(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
if (!IsDevicePathEnd(node) && efi_devpath_is_prefix(dev, node))
if (efi_devpath_is_prefix(dev, node)) {
if (!IsDevicePathEnd(node) && efi_devpath_is_prefix(dev, node))
if (efi_devpath_is_prefix(dev, node)) {
if (efi_devpath_is_prefix(parent, dp)) {