diff options
Diffstat (limited to 'arch/ia64/pci/pci.c')
| -rw-r--r-- | arch/ia64/pci/pci.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 48cc65705db4..7cc3be9fa7c6 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -240,15 +240,12 @@ static acpi_status resource_to_window(struct acpi_resource *resource, * We're only interested in _CRS descriptors that are * - address space descriptors for memory or I/O space * - non-zero size - * - producers, i.e., the address space is routed downstream, - * not consumed by the bridge itself */ status = acpi_resource_to_address64(resource, addr); if (ACPI_SUCCESS(status) && (addr->resource_type == ACPI_MEMORY_RANGE || addr->resource_type == ACPI_IO_RANGE) && - addr->address.address_length && - addr->producer_consumer == ACPI_PRODUCER) + addr->address.address_length) return AE_OK; return AE_ERROR; @@ -481,9 +478,16 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge) { - struct pci_controller *controller = bridge->bus->sysdata; - - ACPI_COMPANION_SET(&bridge->dev, controller->companion); + /* + * We pass NULL as parent to pci_create_root_bus(), so if it is not NULL + * here, pci_create_root_bus() has been called by someone else and + * sysdata is likely to be different from what we expect. Let it go in + * that case. + */ + if (!bridge->dev.parent) { + struct pci_controller *controller = bridge->bus->sysdata; + ACPI_COMPANION_SET(&bridge->dev, controller->companion); + } return 0; } |