diff options
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 1e808ca338f..f64c071d692 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1550,25 +1550,12 @@ enable_all: } EXPORT_SYMBOL_GPL(pci_assign_unassigned_bridge_resources); -#ifdef CONFIG_HOTPLUG -/** - * pci_rescan_bus - scan a PCI bus for devices. - * @bus: PCI bus to scan - * - * Scan a PCI bus and child buses for new devices, adds them, - * and enables them. - * - * Returns the max number of subordinate bus discovered. - */ -unsigned int __ref pci_rescan_bus(struct pci_bus *bus) +void pci_assign_unassigned_bus_resources(struct pci_bus *bus) { - unsigned int max; struct pci_dev *dev; LIST_HEAD(add_list); /* list of resources that want additional resources */ - max = pci_scan_child_bus(bus); - down_read(&pci_bus_sem); list_for_each_entry(dev, &bus->devices, bus_list) if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || @@ -1581,6 +1568,24 @@ unsigned int __ref pci_rescan_bus(struct pci_bus *bus) BUG_ON(!list_empty(&add_list)); pci_enable_bridges(bus); +} + +#ifdef CONFIG_HOTPLUG +/** + * pci_rescan_bus - scan a PCI bus for devices. + * @bus: PCI bus to scan + * + * Scan a PCI bus and child buses for new devices, adds them, + * and enables them. + * + * Returns the max number of subordinate bus discovered. + */ +unsigned int __ref pci_rescan_bus(struct pci_bus *bus) +{ + unsigned int max; + + max = pci_scan_child_bus(bus); + pci_assign_unassigned_bus_resources(bus); pci_bus_add_devices(bus); return max; |