| Sam Ravnborg | 4105717 | 2008-02-02 22:32:23 +0100 | [diff] [blame] | 1 | /* Core PCI functionality used only by PCI hotplug */ |
| 2 | |
| 3 | #include <linux/pci.h> |
| Paul Gortmaker | 363c75d | 2011-05-27 09:37:25 -0400 | [diff] [blame] | 4 | #include <linux/export.h> |
| Sam Ravnborg | 4105717 | 2008-02-02 22:32:23 +0100 | [diff] [blame] | 5 | #include "pci.h" |
| 6 | |
| Bjorn Helgaas | 10874f5 | 2014-04-14 16:11:40 -0600 | [diff] [blame] | 7 | int pci_hp_add_bridge(struct pci_dev *dev) |
| Yinghai Lu | a8e4b9c | 2012-05-18 13:46:34 -0600 | [diff] [blame] | 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); |