netdev - Re: [PATCH AUTOSEL 6.17-6.1] smsc911x: add second read of EEPROM mac when possible corruption seen

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Message-ID: <aQC8y_aM6wtcbnDh@colin-ia-desktop>
Date: Tue, 28 Oct 2025 07:53:31 -0500
From: Colin Foster <colin.foster@...advantage.com>
To: Sasha Levin <sashal@...nel.org>
Cc: patches@...ts.linux.dev, stable@...r.kernel.org,
	Jakub Kicinski <kuba@...nel.org>, steve.glendinning@...well.net,
	netdev@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.17-6.1] smsc911x: add second read of EEPROM mac
 when possible corruption seen

Hi Sasha,

On Sat, Oct 25, 2025 at 11:55:34AM -0400, Sasha Levin wrote:
> From: Colin Foster <colin.foster@...advantage.com>
> 
> [ Upstream commit 69777753a8919b0b8313c856e707e1d1fe5ced85 ]
> 
> When the EEPROM MAC is read by way of ADDRH, it can return all 0s the
> first time. Subsequent reads succeed.
> 
> This is fully reproduceable on the Phytec PCM049 SOM.
> 
> Re-read the ADDRH when this behaviour is observed, in an attempt to
> correctly apply the EEPROM MAC address.
> 
> Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> Link: https://patch.msgid.link/20250903132610.966787-1-colin.foster@in-advantage.com
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
> 
> LLM Generated explanations, may be completely bogus:
> 
> YES
> 

I agree this should be back-ported. Do you need any action from me?

Colin Foster