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Date: Sun, 12 May 2024 23:36:36 -0700
From: Nathan Chancellor <nathan@kernel.org>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com,
	Andrew Lunn <andrew@lunn.ch>, Jakub Kicinski <kuba@kernel.org>,
	Eric Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>,
	Russell King <linux@armlinux.org.uk>,
	linux-arm-kernel@lists.infradead.org,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	Herve Codina <herve.codina@bootlin.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Vladimir Oltean <vladimir.oltean@nxp.com>,
	=?iso-8859-1?Q?K=F6ry?= Maincent <kory.maincent@bootlin.com>,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	Marek =?iso-8859-1?Q?Beh=FAn?= <kabel@kernel.org>,
	Piergiorgio Beruto <piergiorgio.beruto@gmail.com>,
	Oleksij Rempel <o.rempel@pengutronix.de>,
	=?iso-8859-1?Q?Nicol=F2?= Veronese <nicveronese@gmail.com>,
	Simon Horman <horms@kernel.org>, mwojtas@chromium.org,
	Antoine Tenart <atenart@kernel.org>
Subject: Re: [PATCH net-next 0/2] Fix phy_link_topology initialization
Message-ID: <20240513063636.GA652533@thelio-3990X>
References: <20240507102822.2023826-1-maxime.chevallier@bootlin.com>
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In-Reply-To: <20240507102822.2023826-1-maxime.chevallier@bootlin.com>

Hi Maxime,

On Tue, May 07, 2024 at 12:28:19PM +0200, Maxime Chevallier wrote:
> Nathan and Heiner reported issues that occur when phylib and phy drivers
> built as modules expect the phy_link_topology to be initialized, due to
> wrong use of IS_REACHABLE.
> 
> This small fixup series addresses that by moving the initialization code
> into net/core/dev.c, but at the same time implementing lazy
> initialization to only allocate the topology upon the first PHY
> insertion.
> 
> This needed some refactoring, namely pass the netdevice itself as a
> parameter for phy_link_topology helpers.
> 
> Thanks Heiner for the help on untangling this, and Nathan for the
> report.

Are you able to prioritize getting this series merged? This has been a
problem in -next for over a month now and the merge window is now open.
I would hate to see this regress in mainline, as my main system may be
affected by it (not sure, I got a new test machine that got bit by it in
addition to the other two I noticed it on).

Cheers,
Nathan