linux-kernel - Re: [Xen-devel] [PATCH] xen: use PCI interfaces to request IO and MEM resources on platform device.

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Message-ID: <1294755483.3831.5872.camel@zakaz.uk.xensource.com>
Date:	Tue, 11 Jan 2011 14:18:03 +0000
From:	Ian Campbell <Ian.Campbell@...citrix.com>
To:	Jan Beulich <JBeulich@...ell.com>
CC:	Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
	"jeremy@...p.org" <jeremy@...p.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH] xen: use PCI interfaces to request IO	 and
 MEM resources on platform device.

On Tue, 2011-01-11 at 14:10 +0000, Jan Beulich wrote:
> >>> On 11.01.11 at 14:01, Ian Campbell <Ian.Campbell@...citrix.com> wrote:
> > The old way was correct circa 2.6.37-rc5 but broken in 2.6.37 final,
> > there were a bunch of (reverts of) PCI resource changes in that window,
> > If I had to make a guess I'd say it was something in there which did it.
> 
> Was it perhaps broken somewhere between -rc5 and -final, but
> not in -final itself?

No I'm working with 2.6.37 final and it is broken there.

> >> I'm mainly asking because if it really addresses some problem,
> >> then unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
> >> in -unstable should probably get updated too.
> > 
> > Assuming the pci_* interfaces exist back as far as we care about for
> > those drivers then I don't see why not to apply it.
> 
> I checked back to .5, where they exist; the question is - how far
> back do we care?

You mean 2.6.5? That's old enough to be the cut off IMHO.

I'm not sure how much actual use these drivers get these days though.

Ian.


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