pci_get_host_bridge_device
bridge_dev = pci_get_host_bridge_device(dev);
EXPORT_SYMBOL_GPL(pci_get_host_bridge_device);
bridge = pci_get_host_bridge_device(to_pci_dev(dev));
struct device *pci_get_host_bridge_device(struct pci_dev *dev);
struct device *pci_get_host_bridge_device(struct pci_dev *dev);