linux-kernel - Re: [RFC PATCH] PCI: Enable pci bridge when it is needed

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Message-ID: <CAE9FiQWLfdgR8VoqeVOpCdHa3TpK26Bgs7mZ7Ed+Zq60S=g8Vg@mail.gmail.com>
Date:	Fri, 26 Apr 2013 18:57:04 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Yijing Wang <wangyijing@...wei.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] PCI: Enable pci bridge when it is needed

On Fri, Apr 26, 2013 at 6:51 PM, Yijing Wang <wangyijing@...wei.com> wrote:
> I think it's cool! Now we enable bridge in various places, this is a headache.
>
> hi, yinghai, in this patch, enable bridges depend on the driver call pci_enable_device() explicitly.
> I was a little worried If there has some devices don't have some drivers bound, but used by system.
> like ioapic, these devices maybe implemented as pci device, but no pci drivers bind, also, maybe they
> won't call pci_enable_device() explicity. So if they are under the pci bridge, no one will enable the bridge
> for them.

If there is really that case, we could call pci_enable_device in
pci_final quirk for
them.

Yinghai
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