PCI: fix pci_setup_device()'s sprinting into a const buffer

Make pci_setup_device() write the bus ID directly into the allotted storage,
rather than using pci_name() as the address as that now returns a const
pointer.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/probe.c

@@ -713,7 +713,8 @@ static int pci_setup_device(struct pci_dev * dev)
 {
 	u32 class;
 
-	sprintf(pci_name(dev), "%04x:%02x:%02x.%d", pci_domain_nr(dev->bus),
+	snprintf(dev->dev.bus_id, BUS_ID_SIZE,
+		 "%04x:%02x:%02x.%d", pci_domain_nr(dev->bus),
 		 dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 
 	pci_read_config_dword(dev, PCI_CLASS_REVISION, &class);