hotplug-pci.c

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/* Core PCI functionality used only by PCI hotplug */

#include <linux/pci.h>
#include <linux/export.h>
#include "pci.h"

int __ref pci_hp_add_bridge(struct pci_dev *dev)
{
    struct pci_bus *parent = dev->bus;
    int pass, busnr, start = parent->busn_res.start;
    int end = parent->busn_res.end;

    for (busnr = start; busnr <= end; busnr++) {
        if (!pci_find_bus(pci_domain_nr(parent), busnr))
            break;
    }
    if (busnr-- > end) {
        printk(KERN_ERR "No bus number available for hot-added bridge %s\n",
                pci_name(dev));
        return -1;
    }
    for (pass = 0; pass < 2; pass++)
        busnr = pci_scan_bridge(parent, dev, busnr, pass);
    if (!dev->subordinate)
        return -1;

    return 0;
}
EXPORT_SYMBOL_GPL(pci_hp_add_bridge);