linux-kernel - Re: [PATCH v3 0/2] Attach DT nodes to existing PCI devices

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Date: Mon, 8 Apr 2024 14:43:35 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki"
 <rafael@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, Lizhi Hou
 <lizhi.hou@....com>, Rob Herring <robh@...nel.org>
Cc: Max Zhen <max.zhen@....com>, Sonal Santan <sonal.santan@....com>,
 Stefano Stabellini <stefano.stabellini@...inx.com>, Jonathan Cameron
 <Jonathan.Cameron@...wei.com>, Krzysztof Wilczyński
 <kwilczynski@...nel.org>, linux-kernel@...r.kernel.org,
 linux-pci@...r.kernel.org, Allan Nielsen <allan.nielsen@...rochip.com>,
 Horatiu Vultur <horatiu.vultur@...rochip.com>, Steen Hegelund
 <steen.hegelund@...rochip.com>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v3 0/2] Attach DT nodes to existing PCI devices

Hi,

On Mon, 25 Mar 2024 16:39:13 +0100
Herve Codina <herve.codina@...tlin.com> wrote:

> Hi,
> 
> The commit 407d1a51921e ("PCI: Create device tree node for bridge")
> creates of_node for PCI devices.
> 
> During the insertion handling of these new DT nodes done by of_platform,
> new devices (struct device) are created. For each PCI devices a struct
> device is already present (created and handled by the PCI core).
> 
> Creating a new device from a DT node leads to some kind of wrong struct
> device duplication to represent the exact same PCI device.
> 
> This patch series first introduces device_{add,remove}_of_node() in
> order to add or remove a newly created of_node to an already existing
> device. Then it fixes the DT node creation for PCI devices to add or
> remove the created node to the existing PCI device without any new
> device creation.
> 
> Compared to the previous iteration:
>   https://lore.kernel.org/all/20231130165700.685764-1-herve.codina@bootlin.com/
> this v3 series rewrap commit log.
> 
> The potential issue related to the sysfs of_node symlink added after the
> sysfs PCI device is visible from user-space (raised during the v2
> review) is maybe not a problem according to Bjorn:
>   https://lore.kernel.org/all/20240319165430.GA1233494@bhelgaas/
> 
> IMHO, the discussions started with Rob around the interrupt-controller
> during the v2 review are out of the issue this specific series tries to
> fix. Some modifications are needed for the interrupt-controller topic
> but should be done in a specific series.
> 
> Best regards,
> Hervé
> 

I have received no feedback on this v3 series.
I know maintainers are busy but I would like to be sure that this series was
not simply missed.

Best regards,
Hervé