PCI: Introduce /sys/bus/pci/rescan

[cascardo/linux.git] / drivers / pci / probe.c

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 60a8e5f..56c71e5 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1228,13 +1228,13 @@ unsigned int __devinit pci_rescan_bus(struct pci_bus *bus)
 
        max = pci_scan_child_bus(bus);
 
-       up_read(&pci_bus_sem);
+       down_read(&pci_bus_sem);
        list_for_each_entry(dev, &bus->devices, bus_list)
                if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
                    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
                        if (dev->subordinate)
                                pci_bus_size_bridges(dev->subordinate);
-       down_read(&pci_bus_sem);
+       up_read(&pci_bus_sem);
 
        pci_bus_assign_resources(bus);
        pci_enable_bridges(bus);