Merge remote-tracking branch 'asoc/topic/core' into for-tiwai
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / pci / hotplug-pci.c
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
7 int __ref 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);