diff options
| -rw-r--r-- | drivers/pci/setup-bus.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index ec538d3d2bd5..f30ca75b5b6c 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1855,7 +1855,10 @@ void __init pci_assign_unassigned_resources(void) list_for_each_entry(root_bus, &pci_root_buses, node) { pci_assign_unassigned_root_bus_resources(root_bus); - acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge)); + + /* Make sure the root bridge has a companion ACPI device: */ + if (ACPI_HANDLE(root_bus->bridge)) + acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge)); } } |