linux-kernel - Re: [RFT][PATCH] PCI / ACPI: Do not require MSI support for PCIe native features

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Date:	Thu, 17 Mar 2011 01:19:17 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Cc:	linux-pci@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	ACPI Devel Mailing List <linux-acpi@...r.kernel.org>,
	Len Brown <lenb@...nel.org>,
	Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: [RFT][PATCH] PCI / ACPI: Do not require MSI support for PCIe native features

On Tuesday, March 15, 2011, Sarah Sharp wrote:
> On Tue, Mar 15, 2011 at 01:00:17AM +0100, Rafael J. Wysocki wrote:
> > Well, I must admit I have no idea what the problem is.  OK, in addition to the
> > above changes, please replace the "pci_ext_cfg_avail(root->bus->self)" in the
> > same file with "true" and see if _that_ helps.
> 
> Yay, that worked!  dmesg is attached.

Good, at least we know what the problem is, now we only have to find the root
cause. ;-)

So, pci_ext_cfg_avail(root->bus->self) returns 0 on your machine, which is kind
of unexpected (to put it lightly), so very likely we have uncovered a bug
in the init code.

Unfortunately, I may not be able to take care of this issue for the next few
days, I'll let you know when I get back to it.

Thanks,
Rafael
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