linux-kernel - Re: [PATCH net-next] net: dsa: mt7530: register OF node for internal MDIO bus

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Message-ID: <20231227191154.6jkqdlqdxciidpfw@skbuf>
Date: Wed, 27 Dec 2023 21:11:54 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Arınç ÜNAL <arinc.unal@...nc9.com>
Cc: Daniel Golle <daniel@...rotopia.org>,
	Landen Chao <Landen.Chao@...iatek.com>,
	DENG Qingfang <dqfext@...il.com>,
	Sean Wang <sean.wang@...iatek.com>, Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	David Bauer <mail@...id-bauer.net>, mithat.guner@...ont.com,
	erkin.bozoglu@...ont.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net-next] net: dsa: mt7530: register OF node for internal
 MDIO bus

On Sun, Dec 24, 2023 at 10:37:12AM +0300, Arınç ÜNAL wrote:
> If the MDIO bus of the switch is defined on the devicetree, the
> (!ds->user_mii_bus && ds->ops->phy_read) check in dsa_switch_setup will be
> true so the MDIO bus will be attempted to be registered again, resulting in
> a kernel panic.

Where does mt7530 provide ds->ops->phy_read() in upstream?