linux-kernel - Re: [PATCH v3 2/2] PCI Hotplug: acpiphp: get pci

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Message-ID: <20090724235847.GD21376@ldl.fc.hp.com>
Date:	Fri, 24 Jul 2009 17:58:47 -0600
From:	Alex Chiang <achiang@...com>
To:	Jesse Barnes <jesse.barnes@...el.com>
Cc:	lenb@...nel.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v3 2/2] PCI Hotplug: acpiphp: get pci_bus from acpi
	handle correctly

* Jesse Barnes <jesse.barnes@...el.com>:
> On Thu, 23 Jul 2009 17:03:05 -0600
> Alex Chiang <achiang@...com> wrote:
> 
> > We cannot simply call acpi_get_pci_dev() on any random ACPI handle
> > and hope that it works, because a PCI root bridge may not have
> > an associated struct pci_dev.
> > 
> > This is allowed per the PCI specification, and is referred to as a
> > non-materialized bridge.
> > 
> > So, depending on the type of PCI bridge that the handle points to,
> > use the appropriate interface to return the struct pci_bus correctly.
> > 
> > Signed-off-by: Alex Chiang <achiang@...com>
> > ---
> 
> I put these in my linux-next branch, just because I'm really
> conservative about the current release.
> 
> If we hear of boxes in the wild getting bitten by the non-materialized
> bit, we can push this set back to stable.

Sounds good, thanks Jesse.

/ac

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