--- zzzz-none-000/linux-3.10.107/include/linux/pci.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/linux/pci.h	2021-11-10 11:53:56.000000000 +0000
@@ -1083,6 +1083,9 @@
 		  void *userdata);
 int pci_cfg_space_size_ext(struct pci_dev *dev);
 int pci_cfg_space_size(struct pci_dev *dev);
+#ifdef CONFIG_AVM_ENHANCED
+int pci_find_preexist_bus_nr(const struct pci_bus *from);
+#endif
 unsigned char pci_bus_max_busnr(struct pci_bus *bus);
 void pci_setup_bridge(struct pci_bus *bus);
 resource_size_t pcibios_window_alignment(struct pci_bus *bus,