linux-kernel - Re: [PATCH 0/4] ACPI: kill acpi_pci_root

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Message-ID: <CAE9FiQVyx5EL8RCuHF5rOoT5Zj7ksnAFJgg09hGE_sHfRJJXpw@mail.gmail.com>
Date:	Thu, 4 Oct 2012 13:14:52 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Len Brown <lenb@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 0/4] ACPI: kill acpi_pci_root_start

On Thu, Oct 4, 2012 at 12:44 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
>
> To answer your specific question, yes, I do think drivers that are
> statically built in probably should be registered before devices are
> enumerated.  That way, the boot-time case is more similar to the
> hot-add case.
>
> Obviously, for drivers that can be modules, the reverse must work as
> well (enumerate devices, then load and register the driver).  And then
> the other order (register driver, then enumerate device) must also
> work so future hot-adds of the same device type work.

so you will have to handle two paths instead one.

current booting path sequence are tested more than hot add path.
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