diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2013-07-22 14:37:18 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-07-25 12:35:03 -0600 |
| commit | 39772038ea93e85ea4f1307ec9c1f48a063d89a0 (patch) | |
| tree | 310d32883c16365b532448a434a7b834f0d6404b | |
| parent | ff35147cf15814e13c62831f6910f8663e4dc91e (diff) | |
| download | linux-39772038ea93e85ea4f1307ec9c1f48a063d89a0.tar.bz2 | |
PCI: Assign resources for hot-added host bridge more aggressively
When hot-adding an ACPI host bridge, use
pci_assign_unassigned_root_bus_resources() instead of
pci_assign_unassigned_bus_resources().
The former is more aggressive and will release and reassign existing
resources if necessary. This is safe at hot-add time because no drivers
are bound to devices below the new host bridge yet.
[bhelgaas: changelog, split __init changes out for reviewability]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/acpi/pci_root.c | 2 | ||||
| -rw-r--r-- | drivers/pci/setup-bus.c | 2 | ||||
| -rw-r--r-- | include/linux/pci.h | 1 |
3 files changed, 3 insertions, 2 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index faa1d29c0261..ce04eb28e029 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -526,7 +526,7 @@ static int acpi_pci_root_add(struct acpi_device *device, if (system_state != SYSTEM_BOOTING) { pcibios_resource_survey_bus(root->bus); - pci_assign_unassigned_bus_resources(root->bus); + pci_assign_unassigned_root_bus_resources(root->bus); } pci_bus_add_devices(root->bus); diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 8d1e654256a8..94b777d108bb 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1395,7 +1395,7 @@ static enum enable_type pci_realloc_detect(struct pci_bus *bus, * second and later try will clear small leaf bridge res * will stop till to the max deepth if can not find good one */ -static void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus) +void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus) { LIST_HEAD(realloc_head); /* list of resources that want additional resources */ diff --git a/include/linux/pci.h b/include/linux/pci.h index 8cd1e6f30acd..e494c90a00d1 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1003,6 +1003,7 @@ int pci_claim_resource(struct pci_dev *, int); void pci_assign_unassigned_resources(void); void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); void pci_assign_unassigned_bus_resources(struct pci_bus *bus); +void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); void pdev_enable_device(struct pci_dev *); int pci_enable_resources(struct pci_dev *, int mask); void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |