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Diffstat (limited to 'arch/x86/pci/legacy.c')
-rw-r--r--arch/x86/pci/legacy.c42
1 files changed, 25 insertions, 17 deletions
diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index 0db5eaf54560..8d460eaf524f 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -11,28 +11,14 @@
*/
static void __devinit pcibios_fixup_peer_bridges(void)
{
- int n, devfn;
- long node;
+ int n;
if (pcibios_last_bus <= 0 || pcibios_last_bus > 0xff)
return;
DBG("PCI: Peer bridge fixup\n");
- for (n=0; n <= pcibios_last_bus; n++) {
- u32 l;
- if (pci_find_bus(0, n))
- continue;
- node = get_mp_bus_to_node(n);
- for (devfn = 0; devfn < 256; devfn += 8) {
- if (!raw_pci_read(0, n, devfn, PCI_VENDOR_ID, 2, &l) &&
- l != 0x0000 && l != 0xffff) {
- DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l);
- printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
- pci_scan_bus_on_node(n, &pci_root_ops, node);
- break;
- }
- }
- }
+ for (n=0; n <= pcibios_last_bus; n++)
+ pcibios_scan_specific_bus(n);
}
int __init pci_legacy_init(void)
@@ -50,6 +36,28 @@ int __init pci_legacy_init(void)
return 0;
}
+void pcibios_scan_specific_bus(int busn)
+{
+ int devfn;
+ long node;
+ u32 l;
+
+ if (pci_find_bus(0, busn))
+ return;
+
+ node = get_mp_bus_to_node(busn);
+ for (devfn = 0; devfn < 256; devfn += 8) {
+ if (!raw_pci_read(0, busn, devfn, PCI_VENDOR_ID, 2, &l) &&
+ l != 0x0000 && l != 0xffff) {
+ DBG("Found device at %02x:%02x [%04x]\n", busn, devfn, l);
+ printk(KERN_INFO "PCI: Discovered peer bus %02x\n", busn);
+ pci_scan_bus_on_node(busn, &pci_root_ops, node);
+ return;
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(pcibios_scan_specific_bus);
+
int __init pci_subsys_init(void)
{
/*