phb = dn->phb;
phb = PCI_DN(dn)->phb;
void eeh_add_device_early(struct device_node *dn){	struct pci_controller *phb;	struct eeh_early_enable_info info;	if (!dn)		return;	phb = dn->phb;	if (NULL == phb || 0 == phb->buid) {		printk(KERN_WARNING "EEH: Expected buid but found none\n");		return;	}	info.buid_hi = BUID_HI(phb->buid);	info.buid_lo = BUID_LO(phb->buid);	early_enable_eeh(dn, &info);}