PCI: replace pr_debug with dev_dbg

Since we have a struct device, we might as well use dev_printk.  Note that
both pr_debug() and dev_dbg() are completely compiled out unless DEBUG or
DYNAMIC_DEBUG is defined.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/probe.c

@@ -1121,7 +1121,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	unsigned int devfn, pass, max = bus->secondary;
 	struct pci_dev *dev;
 
-	pr_debug("PCI: Scanning bus %04x:%02x\n", pci_domain_nr(bus), bus->number);
+	dev_dbg(&bus->dev, "scanning bus\n");
 
 	/* Go find them, Rover! */
 	for (devfn = 0; devfn < 0x100; devfn += 8)
@@ -1135,8 +1135,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	 * all PCI-to-PCI bridges on this bus.
 	 */
 	if (!bus->is_added) {
-		pr_debug("PCI: Fixups for bus %04x:%02x\n",
-			 pci_domain_nr(bus), bus->number);
+		dev_dbg(&bus->dev, "fixups for bus\n");
 		pcibios_fixup_bus(bus);
 		if (pci_is_root_bus(bus))
 			bus->is_added = 1;
@@ -1156,8 +1155,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	 *
 	 * Return how far we've got finding sub-buses.
 	 */
-	pr_debug("PCI: Bus scan for %04x:%02x returning with max=%02x\n",
-		pci_domain_nr(bus), bus->number, max);
+	dev_dbg(&bus->dev, "bus scan returning with max=%02x\n", max);
 	return max;
 }
 
@@ -1165,7 +1163,7 @@ struct pci_bus * pci_create_bus(struct device *parent,
 		int bus, struct pci_ops *ops, void *sysdata)
 {
 	int error;
-	struct pci_bus *b;
+	struct pci_bus *b, *b2;
 	struct device *dev;
 
 	b = pci_alloc_bus();
@@ -1181,9 +1179,10 @@ struct pci_bus * pci_create_bus(struct device *parent,
 	b->sysdata = sysdata;
 	b->ops = ops;
 
-	if (pci_find_bus(pci_domain_nr(b), bus)) {
+	b2 = pci_find_bus(pci_domain_nr(b), bus);
+	if (b2) {
 		/* If we already got to this bus through a different bridge, ignore it */
-		pr_debug("PCI: Bus %04x:%02x already known\n", pci_domain_nr(b), bus);
+		dev_dbg(&b2->dev, "bus already known\n");
 		goto err_out;
 	}