On Fri, Sep 28, 2012 at 6:52 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> On Fri, Sep 28, 2012 at 6:48 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>> On Fri, Sep 28, 2012 at 4:46 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
>>> On Thu, Sep 27, 2012 at 2:11 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>>>> So could use assign_unassigned_bus_res pci root bus add
>>>
>>> After your series, acpi_pci_root_start() looks like this:
>>>
>>> pci_assign_unassigned_bus_resources
>>> list_for_each_entry(driver, &acpi_pci_drivers, node)
>>> driver->add(root);
>>> pci_enable_bridges(root->bus);
>>>
>>> so apparently it's important that the driver->add() methods be run
>>> *before* the bridges are enabled. Why?
>>
>
> During rebase, the changelog get lost.
>
> pci_enable_bridges
> ==> pci_enable_device
> ==> ...
> ===> pcibios_enable_device
> ===> pcibios_enable_irq
>
> and one of driver in acpi_pci_drivers, is ioapic drivers and it will
> enable ioapic there.
>
> So we need to enable bridges that later.
old changelog before rebase:
-----
Subject: [PATCH] PCI, x86: Move pci_enable_bridges() down
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 ....
----
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