mirror of https://gitee.com/openkylin/linux.git
30 lines
708 B
C
30 lines
708 B
C
/* Core PCI functionality used only by PCI hotplug */
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#include <linux/pci.h>
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#include <linux/export.h>
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#include "pci.h"
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int __ref pci_hp_add_bridge(struct pci_dev *dev)
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{
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struct pci_bus *parent = dev->bus;
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int pass, busnr, start = parent->busn_res.start;
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int end = parent->busn_res.end;
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for (busnr = start; busnr <= end; busnr++) {
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if (!pci_find_bus(pci_domain_nr(parent), busnr))
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break;
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}
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if (busnr-- > end) {
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printk(KERN_ERR "No bus number available for hot-added bridge %s\n",
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pci_name(dev));
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return -1;
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}
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for (pass = 0; pass < 2; pass++)
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busnr = pci_scan_bridge(parent, dev, busnr, pass);
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if (!dev->subordinate)
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return -1;
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return 0;
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}
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EXPORT_SYMBOL_GPL(pci_hp_add_bridge);
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