linux-kernel - Re: [PATCH net-next V1 3/4] net: stmmac: Reconfigure the PHY WOL settings in stmmac

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Message-ID: <YNCOqGCDgSOy/yTP@lunn.ch>
Date:   Mon, 21 Jun 2021 15:05:44 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Ling Pei Lee <pei.lee.ling@...el.com>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        Voon Weifeng <weifeng.voon@...el.com>,
        Wong Vee Khee <vee.khee.wong@...ux.intel.com>,
        Wong Vee Khee <vee.khee.wong@...el.com>,
        Tan Tee Min <tee.min.tan@...el.com>,
        Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next V1 3/4] net: stmmac: Reconfigure the PHY WOL
 settings in stmmac_resume()

On Mon, Jun 21, 2021 at 05:45:35PM +0800, Ling Pei Lee wrote:
> From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
> 
> After PHY received a magic packet, the PHY WOL event will be
> triggered then PHY WOL event interrupt will be disarmed.
> Ethtool settings will remain with WOL enabled after a S3/S4
> suspend resume cycle as expected. Hence,the driver should
> reconfigure the PHY settings to reenable/disable WOL
> depending on the ethtool WOL settings in the resume flow.

Please could you explain this a bit more? I'm wondering if you have a
PHY driver bug. PHY WOL should remain enabled until it is explicitly
disabled.

	Andrew