linux-kernel - Re: [PATCH v7 03/60] sparc/PCI: Unify pci_register

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Message-ID: <CAE9FiQV1WOJj3Qc2M6q7qWy2G2Y4DbAL9EnY9ziaZO4UH9=WFA@mail.gmail.com>
Date:	Thu, 22 Oct 2015 12:56:16 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <helgaas@...nel.org>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
	Yijing Wang <wangyijing@...wei.com>,
	Khalid Aziz <khalid.aziz@...cle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 03/60] sparc/PCI: Unify pci_register_region()

On Wed, Oct 21, 2015 at 6:15 PM, Yinghai Lu <yinghai@...nel.org> wrote:
> On Wed, Oct 21, 2015 at 3:59 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>> On Wed, Oct 21, 2015 at 3:32 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>>> On Wed, Oct 21, 2015 at 11:50 AM, Bjorn Helgaas <helgaas@...nel.org> wrote:
>>>> Lots of other architectures have both mem32 and mem64 apertures.  You
>>>> haven't explained what's unique about sparc yet.  Does
>>>> pci_find_parent_resource() not work on sparc?  If not, is that because the
>>>> resource tree looks different on sparc than on other architectures?  If so,
>>>> is that difference something intentional that we want to keep, or should we
>>>> converge on a single resource tree format across all architectures?
>>>
>>> In the new pci_register_legacy_regions(), we only have root bus.
>>> but current pci_find_parent_resource is taking pci dev.
>>>
>>> So will need to change it to take bus instead, please check if you are ok
>>> with following, then I would update other two.
>>
>> Never mind, I could just one dummy pci device to work around it.
>> so don't need to change that.
>
> Khalid,
>
> Please use attached two to replace patch2, patch3 and patch4.
>
looks like i mix the use root bus resource with parent bus resource ...
so that still have problem.
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