linux-kernel - Re: [PATCH 4/12] PCI PM: Make it possible to force using INTx for PCIe PME signaling

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Message-Id: <201001070000.41807.rjw@sisk.pl>
Date:	Thu, 7 Jan 2010 00:00:41 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Len Brown <lenb@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Oliver Neukum <oliver@...kum.org>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Shaohua Li <shaohua.li@...el.com>,
	Francois Romieu <romieu@...zoreil.com>
Subject: Re: [PATCH 4/12] PCI PM: Make it possible to force using INTx for PCIe PME signaling

On Wednesday 06 January 2010, Matthew Garrett wrote:
> On Wed, Jan 06, 2010 at 01:56:25PM -0800, Jesse Barnes wrote:
> 
> > This scares me a little... seems like we're not restoring some state on
> > resume that's needed for MSIs to work?  Looks fine though.
> 
> Yeah, that was my concern. We debugged this a little on IRC and didn't 
> get anywhere, though, so probably need to find someone who knows more 
> about MSIs...

I'd rather say someone who knows more about ICH7. :-)

MSIs work just fine after resume for the other devices in the same box,
so I'd say it's a chipset issue.

Rafael
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