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PCI/ACPI: Assign unassigned resource for hot-added root bus

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After we get hot-added IOAPIC registered.
pci_enable_bridges() will try to enable IOAPIC IRQ for PCI bridges.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Yinghai Lu 2012-10-30 14:31:32 -06:00 • committed by Bjorn Helgaas
parent e164f658f2
commit 62a08c5a31
1 changed files with 7 additions and 0 deletions
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7
drivers/acpi/pci_root.c
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@ -644,12 +644,19 @@ static int acpi_pci_root_start(struct acpi_device *device)
struct acpi_pci_root *root = acpi_driver_data(device); struct acpi_pci_root *root = acpi_driver_data(device);
struct acpi_pci_driver *driver; struct acpi_pci_driver *driver;
if (system_state != SYSTEM_BOOTING)
pci_assign_unassigned_bus_resources(root->bus);
mutex_lock(&acpi_pci_root_lock); mutex_lock(&acpi_pci_root_lock);
list_for_each_entry(driver, &acpi_pci_drivers, node) list_for_each_entry(driver, &acpi_pci_drivers, node)
if (driver->add) if (driver->add)
driver->add(root); driver->add(root);
mutex_unlock(&acpi_pci_root_lock); mutex_unlock(&acpi_pci_root_lock);
/* need to after hot-added ioapic is registered */
if (system_state != SYSTEM_BOOTING)
pci_enable_bridges(root->bus);
pci_bus_add_devices(root->bus); pci_bus_add_devices(root->bus);
return 0; return 0;