PCI: Include PCI domain in PCI bus names on x86/x86_64

The PCI bus names included in /proc/iomem and /proc/ioports are
of the form 'PCI Bus #XX' where XX is the bus number.  This patch
changes the naming to 'PCI Bus XXXX:YY' where XXXX is the domain
number and YY is the bus number.  For example, PCI bus 14 in
domain 0 will show as 'PCI Bus 0000:14' instead of 'PCI Bus #14'.
This change makes the naming consistent with other architectures
such as ia64 where multiple PCI domain support has been around
longer.

Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

arch/x86/pci/acpi.c

@@ -151,7 +151,7 @@ adjust_transparent_bridge_resources(struct pci_bus *bus)
 
 static void
 get_current_resources(struct acpi_device *device, int busnum,
-			struct pci_bus *bus)
+			int domain, struct pci_bus *bus)
 {
 	struct pci_root_info info;
 	size_t size;
@@ -168,10 +168,10 @@ get_current_resources(struct acpi_device *device, int busnum,
 	if (!info.res)
 		goto res_alloc_fail;
 
-	info.name = kmalloc(12, GFP_KERNEL);
+	info.name = kmalloc(16, GFP_KERNEL);
 	if (!info.name)
 		goto name_alloc_fail;
-	sprintf(info.name, "PCI Bus #%02x", busnum);
+	sprintf(info.name, "PCI Bus %04x:%02x", domain, busnum);
 
 	info.res_num = 0;
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
@@ -247,7 +247,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 #endif
 
 	if (bus && (pci_probe & PCI_USE__CRS))
-		get_current_resources(device, busnum, bus);
+		get_current_resources(device, busnum, domain, bus);
 	
 	return bus;
 }

drivers/pci/probe.c

@@ -631,7 +631,9 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
 		pci_write_config_byte(dev, PCI_SUBORDINATE_BUS, max);
 	}
 
-	sprintf(child->name, (is_cardbus ? "PCI CardBus #%02x" : "PCI Bus #%02x"), child->number);
+	sprintf(child->name,
+		(is_cardbus ? "PCI CardBus %04x:%02x" : "PCI Bus %04x:%02x"),
+		pci_domain_nr(bus), child->number);
 
 	/* Has only triggered on CardBus, fixup is in yenta_socket */
 	while (bus->parent) {