linux-kernel - Re: [PATCH net v2 0/2] Fix 'ethtool --show-eee' during initial stage

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Message-ID: <913e6891-51f3-442b-8af1-351d96ff018f@gmail.com>
Date: Sat, 16 Nov 2024 19:06:02 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Choong Yong Liang <yong.liang.choong@...ux.intel.com>,
 Andrew Lunn <andrew@...n.ch>, "David S . Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Jose Abreu <joabreu@...opsys.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Oleksij Rempel <o.rempel@...gutronix.de>, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH net v2 0/2] Fix 'ethtool --show-eee' during initial stage

On 16.11.2024 18:44, Russell King (Oracle) wrote:
> On Sat, Nov 16, 2024 at 06:41:13PM +0100, Heiner Kallweit wrote:
>> On 16.11.2024 16:34, Russell King (Oracle) wrote:
>>> Hmm, don't we want to do this under phydev->lock, because network
>>> drivers and phylib may be reading from phydev->eee_cfg? If we
>>> update it outside the lock, and then revert, there's a chance that
>>> the phylib state machine / network driver may see the changes
>>> which then get reverted on failure, potentially leading to
>>> inconsistent state.
>>
>> Good point, then the patch would look like this.
>> BTW: Saw that Jakub applied your patch already.
> 
> Yes indeed, so I hope Jakub will apply your follow-up patch soon!
> This LGTM.
> 
OK, then I'll submit the followup.

> Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> 
> Thanks!
>