netdev - Re: [PATCH net-next 10/10] net: dsa: bcm_sf2: drop priv->master_mii

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Date: Thu, 4 Jan 2024 23:48:29 -0300
From: Luiz Angelo Daros de Luca <luizluca@...il.com>
To: Vladimir Oltean <vladimir.oltean@....com>
Cc: 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>, 
	Alvin Šipraga <alsi@...g-olufsen.dk>, 
	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 10/10] net: dsa: bcm_sf2: drop priv->master_mii_dn

> There used to be a of_node_put(priv->master_mii_dn) call in
> bcm_sf2_mdio_unregister(), which was accidentally deleted in commit
> 6ca80638b90c ("net: dsa: Use conduit and user terms").
>
> But it's not needed - we don't need to hold a reference on the
> "brcm,unimac-mdio" OF node for that long, since we don't do anything
> with it. We can release it as soon as we finish bcm_sf2_mdio_register().
>
> Also reduce "if (err && dn)" to just "if (err)". We know "dn", aka the
> former priv->master_mii_dn, is non-NULL. Otherwise, of_mdio_find_bus(dn)
> would not have been able to find the bus behind "brcm,unimac-mdio".
>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

Reviewed-by: Luiz Angelo Daros de Luca <luizluca@...il.com>