netdev - Re: [PATCH net-next 05/10] net: dsa: qca8k: skip MDIO bus creation if its OF node has status = "disabled"

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Message-ID: <q3f7salrzk3ppt4g3g5qsey3h44lmymrfullva5y53ku4tn2lf@wh67eeb67wsv>
Date: Thu, 4 Jan 2024 16:05:19 +0000
From: Alvin Šipraga <ALSI@...g-olufsen.dk>
To: Vladimir Oltean <vladimir.oltean@....com>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Andrew Lunn
	<andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>, Luiz Angelo Daros
 de Luca <luizluca@...il.com>, Linus Walleij <linus.walleij@...aro.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>, Hauke Mehrtens
	<hauke@...ke-m.de>, Christian Marangi <ansuelsmth@...il.com>,
	Arınç ÜNAL <arinc.unal@...nc9.com>
Subject: Re: [PATCH net-next 05/10] net: dsa: qca8k: skip MDIO bus creation if
 its OF node has status = "disabled"

On Thu, Jan 04, 2024 at 04:00:32PM +0200, Vladimir Oltean wrote:
> Currently the driver calls the non-OF devm_mdiobus_register() rather
> than devm_of_mdiobus_register() for this case, but it seems to rather
> be a confusing coincidence, and not a real use case that needs to be
> supported.
> 
> If the device tree says status = "disabled" for the MDIO bus, we
> shouldn't need an MDIO bus at all. Instead, just exit as early as
> possible and do not call any MDIO API.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

Reviewed-by: Alvin Šipraga <alsi@...g-olufsen.dk>

> ---
>  drivers/net/dsa/qca/qca8k-8xxx.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)