linux-kernel - Re: [PATCH net v1 2/2] net: stmmac: set initial EEE policy configuration

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Message-ID: <a6cbf428-4672-4beb-8c55-e4d3ae684458@lunn.ch>
Date: Thu, 14 Nov 2024 15:19:22 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Oleksij Rempel <o.rempel@...gutronix.de>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH net v1 2/2] net: stmmac: set initial EEE policy
 configuration

On Thu, Nov 14, 2024 at 04:16:53PM +0800, Choong Yong Liang wrote:
> Set the initial eee_cfg values to have 'ethtool --show-eee ' display
> the initial EEE configuration.
> 
> Fixes: 49168d1980e2 ("net: phy: Add phy_support_eee() indicating MAC support EEE")
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 7bf275f127c9..5fce52a9412e 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1204,7 +1204,7 @@ static int stmmac_init_phy(struct net_device *dev)
>  			netdev_err(priv->dev, "no phy at addr %d\n", addr);
>  			return -ENODEV;
>  		}
> -
> +		phy_support_eee(phydev);
>  		ret = phylink_connect_phy(priv->phylink, phydev);

Is supporting EEE a synthesis option, or is it always available?

Some EEE code is guarded by:

        if (!priv->dma_cap.eee)
                return -EOPNOTSUPP;

	Andrew