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From: Paolo Abeni <pabeni@redhat.com>
To: Jan Hoffmann <jan@3e8.eu>, Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Daniel Golle <daniel@makrotopia.org>,
	Markus Stockhausen <markus.stockhausen@gmx.de>,
	Damien Dejean <dam.dejean@gmail.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v2] net: phy: realtek: support MDI swapping for RTL8226-CG
Date: Tue, 31 Mar 2026 15:24:33 +0200	[thread overview]
Message-ID: <4c7118f6-425b-4584-86fb-97f2a68c4474@redhat.com> (raw)
In-Reply-To: <20260327202001.413280-1-jan@3e8.eu>

On 3/27/26 8:32 PM, Jan Hoffmann wrote:
> +static int rtl8226_config_mdi_order(struct phy_device *phydev)
> +{
> +	u32 order;
> +	int ret;
> +
> +	ret = of_property_read_u32(phydev->mdio.dev.of_node, "enet-phy-pair-order", &order);
> +
> +	/* Property not present, nothing to do */
> +	if (ret == -EINVAL || ret == -ENOSYS)
> +		return 0;
> +
> +	if (ret)
> +		return ret;
> +
> +	/* Only enabling MDI swapping is supported */
> +	if (order != 1)
> +		return -EINVAL;

I guess some existing setup may have "enet-phy-pair-order" == 0, and the
above will make them fail. I think you should just pass with no action
in such a case.

/P


  reply	other threads:[~2026-03-31 13:24 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-27 19:32 [PATCH net-next v2] net: phy: realtek: support MDI swapping for RTL8226-CG Jan Hoffmann
2026-03-31 13:24 ` Paolo Abeni [this message]
2026-03-31 13:38 ` Russell King (Oracle)
2026-04-03 18:49   ` Jan Hoffmann

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