diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2012-11-03 21:39:31 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-01-07 15:58:48 -0700 |
| commit | 3c449ed0075994b3f3371f8254560428ba787efc (patch) | |
| tree | d4ed374d484cc1818c47b66fb71c1955ee277ae9 /drivers | |
| parent | b95168e010a405add13aa010d7c45b55dc4026c7 (diff) | |
PCI/ACPI: Reserve firmware-allocated resources for hot-added root buses
Firmware may have assigned PCI BARs for hot-added devices, so reserve
those resources before trying to allocate more.
[bhelgaas: move empty weak definition here]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/pci_root.c | 4 | ||||
| -rw-r--r-- | drivers/pci/bus.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 7928d4dc7056..dcbe9660e756 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -650,8 +650,10 @@ static int acpi_pci_root_start(struct acpi_device *device) struct acpi_pci_root *root = acpi_driver_data(device); struct acpi_pci_driver *driver; - if (system_state != SYSTEM_BOOTING) + if (system_state != SYSTEM_BOOTING) { + pcibios_resource_survey_bus(root->bus); pci_assign_unassigned_bus_resources(root->bus); + } mutex_lock(&acpi_pci_root_lock); list_for_each_entry(driver, &acpi_pci_drivers, node) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index ad6a8b635692..847f3ca47bb8 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -158,6 +158,8 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, return ret; } +void __weak pcibios_resource_survey_bus(struct pci_bus *bus) { } + /** * pci_bus_add_device - add a single device * @dev: device to add |