Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH 37/40] PCI, x86: Move pci_enable_bridges() down | Date | Wed, 19 Sep 2012 11:54:51 -0700 |
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After we get hot-added ioapic registered.
pci_enable_bridges will try to enable ioapic irq for pci bridge.
So need to move it down.
Or We can move out pcibios_enable_irq() out of pci_enable_device() and call pcibios_enable_irq in pci_bus_add_devices ? also will need to move ... pcibios_resource_survey_bus(root->bus); pci_assign_unassigned_bus_resources(root->bus); to the start add ....
Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- drivers/acpi/pci_root.c | 3 +++ drivers/pci/probe.c | 1 + drivers/pci/setup-bus.c | 2 -- 3 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 67f7733..670511f 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -644,6 +644,9 @@ static int acpi_pci_root_start(struct acpi_device *device) if (driver->add) driver->add(root); + /* need to after hot-added ioapic is registered */ + pci_enable_bridges(root->bus); + pci_bus_add_devices(root->bus); mutex_unlock(&acpi_pci_root_lock); diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 460ac84..5975fd5 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1905,6 +1905,7 @@ unsigned int __ref pci_rescan_bus(struct pci_bus *bus) max = pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); + pci_enable_bridges(bus); pci_bus_add_devices(bus); return max; diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 56155c9..63cb3ba 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1566,6 +1566,4 @@ void pci_assign_unassigned_bus_resources(struct pci_bus *bus) up_read(&pci_bus_sem); __pci_bus_assign_resources(bus, &add_list, NULL); BUG_ON(!list_empty(&add_list)); - - pci_enable_bridges(bus); } -- 1.7.7
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