linux-kernel - Re: [PATCH] net: phy: leds: Trigger leds only if PHY speed is known

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Message-ID: <YRPhMen7jZZFe7pc@lunn.ch>
Date:   Wed, 11 Aug 2021 16:39:45 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     "Ivan T. Ivanov" <iivanov@...e.de>
Cc:     Russell King <linux@...linux.org.uk>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: phy: leds: Trigger leds only if PHY speed is known

> I think will be easier if we protect public phylib API internally with
> lock, otherwise it is easy to make mistakes, obviously. But still this
> will not protect users which directly dereference phy_device members.

Anybody directly dereference phy_device members, rather than going
through the API, is directly responsible for any breakage they
cause. This is not a supported use case.

       Andrew