Re: [PATCH 0/4] ACPI: kill acpi_pci_root_start

[Yinghai Lu]

On Thu, Oct 4, 2012 at 10:47 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> On Wed, Oct 03, 2012 at 04:00:10PM -0700, Yinghai Lu wrote:
> This is a fundamental difference: at boot-time, all the ACPI devices below the
> host bridge already exist before the pci_root.c driver claims the bridge,
> while at hot-add time, pci_root.c claims the bridge *before* those ACPI
> devices exist.
>
> I think this is wrong.  The hot-plug case (where the driver is already
> loaded and binds to the device as soon as it's discovered, before the
> ACPI hierarchy below it is enumerated) seems like the obviously correct
> order.  I think we should change the boot-time order to match that, i.e.,
> we should register pci_root.c *before* enumerating ACPI devices.

in booting path, all device get probed at first, and then register driver...
do you want to register all pci driver before probing pci devices?

Yinghai
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