linux-kernel - Re: [PATCH v2 2/6] net: phy: fixed

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Message-ID: <20200603161905.GE869823@lunn.ch>
Date:   Wed, 3 Jun 2020 18:19:05 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     "Ahmed S. Darwish" <a.darwish@...utronix.de>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        "Sebastian A. Siewior" <bigeasy@...utronix.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: Re: [PATCH v2 2/6] net: phy: fixed_phy: Remove unused seqcount

On Wed, Jun 03, 2020 at 04:49:45PM +0200, Ahmed S. Darwish wrote:
> Commit bf7afb29d545 ("phy: improve safety of fixed-phy MII register
> reading") protected the fixed PHY status with a sequence counter.
> 
> Two years later, commit d2b977939b18 ("net: phy: fixed-phy: remove
> fixed_phy_update_state()") removed the sequence counter's write side
> critical section -- neutralizing its read side retry loop.
> 
> Remove the unused seqcount.
> 
> Signed-off-by: Ahmed S. Darwish <a.darwish@...utronix.de>
> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew