linux-kernel - Re: linux-next: manual merge of the pci tree with the arm-soc tree

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Message-ID: <Y5nfr+AXofk9Ch2m@orome>
Date:   Wed, 14 Dec 2022 15:37:35 +0100
From:   Thierry Reding <treding@...dia.com>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Rob Herring <robh@...nel.org>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Vidya Sagar <vidyas@...dia.com>,
        Jon Hunter <jonathanh@...dia.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
        ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: linux-next: manual merge of the pci tree with the arm-soc tree

On Wed, Dec 14, 2022 at 02:36:49AM +0300, Serge Semin wrote:
> On Tue, Dec 13, 2022 at 02:07:33PM -0600, Bjorn Helgaas wrote:
> > On Tue, Dec 13, 2022 at 01:53:13PM -0600, Bjorn Helgaas wrote:
> > > On Tue, Dec 13, 2022 at 10:03:10PM +0300, Serge Semin wrote:
> > > > On Tue, Dec 13, 2022 at 05:48:53PM +0100, Thierry Reding wrote:
> > > > > On Tue, Dec 13, 2022 at 10:21:03AM -0600, Bjorn Helgaas wrote:
> > > > > > On Mon, Dec 05, 2022 at 09:57:38AM +1100, Stephen Rothwell wrote:
> > > > > > > Hi all,
> > > > > > > 
> > > > > > > Today's linux-next merge of the pci tree got a conflict in:
> > > > > > > 
> > > > > > >   Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
> > > > > > > 
> > > > > > > between commit:
> > > > > > > 
> > > > > > >   5c3741492d2e ("dt-bindings: PCI: tegra234: Add ECAM support")
> > > > > > > 
> > > > > > > from the arm-soc tree and commit:
> > > > > > > 
> > > > > > >   4cc13eedb892 ("dt-bindings: PCI: dwc: Add reg/reg-names common properties")
> > > > > > > 
> > > > > > > from the pci tree.
> > > > > > > 
> > > > > > > I didn't know how to fix this up, so I just used the latter (and so lost
> > > > > > > the addition of "ecam").
> > > > > > 
> > > > > > Did I miss a suggested resolution for this?
> > > > 
> > > > > We had a brief discussion about this in another thread. So basically
> > > > > Stephen's resolution is fine here and the plan is to instead add the
> > > > > ECAM bits that the Tegra patch does in a separate patch on top of
> > > > > Serge's patch. I should get around to sending that patch tomorrow.
> > > > 
> > > > Actually the discussion still goes. I haven't got a respond to my
> > > > last suggestion which seems to me more reasonable than extending the
> > > > DT-bindings with another vendor-specific reg-name. @Bjorn, please join
> > > > the discussion here:
> > > > https://lore.kernel.org/linux-pci/20221114155333.234496-2-jonathanh@nvidia.com/
> > > 
> 
> > > Sorry, it's really too late for discussion.  I need to send the v6.2
> > > pull request today or at the very latest, tomorrow, so the only thing
> > > to decide is how to resolve the merge conflict in the simplest
> > > possible way.  Unless there's a very compelling reason to resolve it
> > > differently than Stephen did, that's going to be the answer.
> 
> Sigh... One more redundant vendor-specific name. I wish I was in the
> Cc-list of the original series.
> 
> > 
> > To be more specific, the current answer is this (which is the same as
> > what's in next-20221213):
> > 
> >   https://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/tree/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml?id=f64171fdd171
> 
> Thanks. I've got it from the @Stephen message. @Thierry will submit a
> new patch with the same 'ecam'-names change rebased on top of the
> updated DT-schema.

If Rob doesn't mind this being broken in linux-next for a few more days,
I can discuss this internally with our PCI and UEFI teams and find out
if your proposal could be made to work.

Thierry

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