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Tip revision: 5d01410fe4d92081f349b013a2e7a95429e4f2c9 authored by Linus Torvalds on 23 November 2014, 23:25:20 UTC
Linux 3.18-rc6
Tip revision: 5d01410
hotplug-pci.c
/* Core PCI functionality used only by PCI hotplug */

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

int 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);
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