linux-kernel - Re: [PATCH] net: phy: Only resume phy if it is suspended

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Message-ID: <7e3208aa-3adf-47ec-9e95-3c88a121e8a3@lunn.ch>
Date:   Wed, 6 Dec 2023 01:03:03 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Justin Chen <justin.chen@...adcom.com>
Cc:     netdev@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        florian.fainelli@...adcom.com,
        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>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: phy: Only resume phy if it is suspended

On Tue, Dec 05, 2023 at 03:42:29PM -0800, Justin Chen wrote:
> Resuming the phy can take quite a bit of time. Lets only resume the
> phy if it is suspended.

Humm...

https://lore.kernel.org/netdev/6d45f4da-c45e-4d35-869f-85dd4ec37b31@lunn.ch/T/

If Broadcom PHYs are slow to resume, maybe you should solve this in
the broadcom resume handler, read the status from the hardware and
only do the resume if the hardware is suspended.

     Andrew