linux-kernel - Re: [PATCH 1/3] of: always populate a root node

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Date:   Tue, 3 May 2022 12:22:13 -0500
From:   Frank Rowand <frowand.list@...il.com>
To:     Rob Herring <robh@...nel.org>,
        Clément Léger <clement.leger@...tlin.com>
Cc:     Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Allan Nielsen <allan.nielsen@...rochip.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Steen Hegelund <steen.hegelund@...rochip.com>,
        Thomas Petazzoni <thomas.petazonni@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Mark Brown <broonie@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Andrew Lunn <andrew@...n.ch>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH 1/3] of: always populate a root node

On 5/3/22 08:45, Rob Herring wrote:
> On Wed, Apr 27, 2022 at 11:45:00AM +0200, Clément Léger wrote:
>> When enabling CONFIG_OF on a platform where of_root is not populated by
>> firmware, we end up without a root node. In order to apply overlays and
>> create subnodes of the root node, we need one. This commit creates an
>> empty root node if not present.
> 
> The existing unittest essentially does the same thing for running the 
> tests on non-DT systems. It should be modified to use this support 
> instead. Maybe that's just removing the unittest code that set of_root.
> 
> I expect Frank will have some comments.
> 

< snip >

This patch series is next on my list, after what I am currently working
on (updating the .dts -> .dtso patch).  I may get to this today, but
more likely it will be tomorrow.

-Frank