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

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Date:	Tue, 11 Jan 2011 14:10:50 +0000
From:	"Jan Beulich" <JBeulich@...ell.com>
To:	"Ian Campbell" <Ian.Campbell@...citrix.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 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?

>> 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?

Jan

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