1 /* Core PCI functionality used only by PCI hotplug */ 2 3 #include <linux/pci.h> 4 #include <linux/export.h> 5 #include "pci.h" 6 pci_hp_add_bridge(struct pci_dev * dev)7int pci_hp_add_bridge(struct pci_dev *dev) 8 { 9 struct pci_bus *parent = dev->bus; 10 int pass, busnr, start = parent->busn_res.start; 11 int end = parent->busn_res.end; 12 13 for (busnr = start; busnr <= end; busnr++) { 14 if (!pci_find_bus(pci_domain_nr(parent), busnr)) 15 break; 16 } 17 if (busnr-- > end) { 18 printk(KERN_ERR "No bus number available for hot-added bridge %s\n", 19 pci_name(dev)); 20 return -1; 21 } 22 for (pass = 0; pass < 2; pass++) 23 busnr = pci_scan_bridge(parent, dev, busnr, pass); 24 if (!dev->subordinate) 25 return -1; 26 27 return 0; 28 } 29 EXPORT_SYMBOL_GPL(pci_hp_add_bridge); 30