PCI: enumerate the PCI device only removed out PCI hieratchy of OS when re-scanning PCI

[pandora-kernel.git] / drivers / pci / probe.c

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index bafb3c3..f03ed96 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -724,12 +724,14 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
                pci_write_config_word(dev, PCI_STATUS, 0xffff);
 
                /* Prevent assigning a bus number that already exists.
-                * This can happen when a bridge is hot-plugged */
-               if (pci_find_bus(pci_domain_nr(bus), max+1))
-                       goto out;
-               child = pci_add_new_bus(bus, dev, ++max);
-               if (!child)
-                       goto out;
+                * This can happen when a bridge is hot-plugged, so in
+                * this case we only re-scan this bus. */
+               child = pci_find_bus(pci_domain_nr(bus), max+1);
+               if (!child) {
+                       child = pci_add_new_bus(bus, dev, ++max);
+                       if (!child)
+                               goto out;
+               }
                buses = (buses & 0xff000000)
                      | ((unsigned int)(child->primary)     <<  0)
                      | ((unsigned int)(child->secondary)   <<  8)