--- zzzz-none-000/linux-4.4.60/arch/mips/include/asm/pci.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/arch/mips/include/asm/pci.h	2021-02-04 17:41:59.000000000 +0000
@@ -55,6 +55,7 @@
  * Used by boards to register their PCI busses before the actual scanning.
  */
 extern void register_pci_controller(struct pci_controller *hose);
+extern void unregister_pci_controller(struct pci_controller *hose);
 
 /*
  * board supplied pci irq fixup routine
@@ -123,6 +124,14 @@
 }
 #endif /* CONFIG_PCI_DOMAINS */
 
+extern void pcibios_reset_busno(void);
+
+#ifdef CONFIG_AVM_PCI_RECOVERY
+extern void ath_pci_reset(void);
+extern void ath_pci_down(void);
+extern void ath_pci_up(void);
+#endif
+
 #endif /* __KERNEL__ */
 
 /* implement the pci_ DMA API in terms of the generic device dma_ one */