linux-kernel - Re: [PATCH v3 0/2] fw

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Message-ID: <20240712153446.37e26d34@bootlin.com>
Date: Fri, 12 Jul 2024 15:34:46 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: Saravana Kannan <saravanak@...gle.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki"
 <rafael@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
 <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Wolfram Sang
 <wsa+renesas@...g-engineering.com>, Rob Herring <robh@...nel.org>, Mark
 Brown <broonie@...nel.org>, Len Brown <lenb@...nel.org>, Andy Shevchenko
 <andriy.shevchenko@...ux.intel.com>, Daniel Scally <djrscally@...il.com>,
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>, Sakari Ailus
 <sakari.ailus@...ux.intel.com>, Geert Uytterhoeven
 <geert+renesas@...der.be>, kernel-team@...roid.com, Wolfram Sang
 <wsa@...nel.org>, linux-kernel@...r.kernel.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
 devicetree@...r.kernel.org, linux-spi@...r.kernel.org,
 linux-acpi@...r.kernel.org, Luca Ceresoli <luca.ceresoli@...tlin.com>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v3 0/2] fw_devlink overlay fix

Hi Saravana,

On Tue, 23 Apr 2024 10:39:24 +0200
Herve Codina <herve.codina@...tlin.com> wrote:

> Hi Saravana,
> 
> On Thu, 11 Apr 2024 16:56:20 -0700
> Saravana Kannan <saravanak@...gle.com> wrote:
> 
> > Overlays don't work correctly with fw_devlink. This patch series fixes
> > it. This series is now ready for review and merging once Geert and Herve
> > give they Tested-by.
> > 
> > Geert and Herve,
> > 
> > This patch series should hopefully fix both of your use cases [1][2][3].
> > Can you please check to make sure the device links created to/from the
> > overlay devices are to/from the right ones?
> > 
> > Thanks,
> > Saravana
> >   
> 
> I tested the series.
> 
> On my Microchip use case (i.e. DT overlay on a PCIe device), I observed that
> some driver removal were done in a wrong order. For instance, the onboard
> PCIe device interrupt controller (oic@...c0120) was removed before its
> consumers.
> 
> I enabled debug traces in core.c and observed that many links were dropped.
> These links are related to pinctrl, clock, reset, interrupts, ...
> I have the feeling that these links should not be dropped.
> 

Have you made any progress on this topic ?

I haven't seen any updates.
Maybe I missed something.

Best regards,
Hervé