netdev - Re: [PATCH RFC 08/18] net: FEC: Fixup EEE

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Message-ID: <Y/AxNuRjLsdXBZRl@lunn.ch>
Date:   Sat, 18 Feb 2023 03:00:22 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     netdev <netdev@...r.kernel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Doug Berger <opendmb@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Wei Fang <wei.fang@....com>,
        Shenwei Wang <shenwei.wang@....com>,
        Clark Wang <xiaoning.wang@....com>,
        NXP Linux Team <linux-imx@....com>,
        UNGLinuxDriver@...rochip.com, Byungho An <bh74.an@...sung.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Oleksij Rempel <linux@...pel-privat.de>
Subject: Re: [PATCH RFC 08/18] net: FEC: Fixup EEE

> >  	p->tx_lpi_timer = edata->tx_lpi_timer;
> > -
> > -	if (!edata->eee_enabled || !edata->tx_lpi_enabled ||
> > -	    !edata->tx_lpi_timer)
> > -		ret = fec_enet_eee_mode_set(ndev, false);
> > -	else
> > -		ret = fec_enet_eee_mode_set(ndev, true);
> > -
> > -	if (ret)
> > -		return ret;
> > +	p->tx_lpi_enabled = edata->tx_lpi_enabled;
> 
> Hm.. this change have effect only after link restart. Should we do
> something like this?

I think moving tx_lpi_enabled into phylib will help here. phylib can
track if only this changes, and then call the adjust_link callback
without actually doing an auto neg is only that changes.

	Andrew