/* Core PCI functionality used only by PCI hotplug */#include<linux/pci.h>#include<linux/export.h>#include"pci.h"unsignedint__devinitpci_do_scan_bus(structpci_bus*bus){unsignedintmax;max=pci_scan_child_bus(bus);/* * Make the discovered devices available. */pci_bus_add_devices(bus);returnmax;}EXPORT_SYMBOL(pci_do_scan_bus);