netdev - Re: [RESEND][PATCH] net: cpsw: fix obtaining mac address for am3517

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Message-ID: <457ae95b-8838-4c10-821c-379ed622ef41@lunn.ch>
Date: Sat, 24 Jun 2023 16:33:59 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Måns Rullgård <mans@...sr.com>
Cc: Grygorii Strashko <grygorii.strashko@...com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	linux-omap@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jeroen Hofstee <jhofstee@...tronenergy.com>,
	Tony Lindgren <tony@...mide.com>
Subject: Re: [RESEND][PATCH] net: cpsw: fix obtaining mac address for am3517

On Sat, Jun 24, 2023 at 03:24:47PM +0100, Måns Rullgård wrote:
> Andrew Lunn <andrew@...n.ch> writes:
> 
> > On Sat, Jun 24, 2023 at 01:10:59PM +0100, Mans Rullgard wrote:
> >> From: Jeroen Hofstee <jhofstee@...tronenergy.com>
> >> 
> >> Commit b6745f6e4e63 ("drivers: net: cpsw: davinci_emac: move reading mac
> >> id to common file") did not only move the code for an am3517, it also
> >> added the slave parameter, resulting in an invalid (all zero) mac address
> >> being returned for an am3517, since it only has a single emac
> >
> > Hi Mans
> >
> > If there is only a single emac, why is the function being called with
> > slave=1? Given the description, it seems like you are fixing the wrong
> > problem.
> 
> See previous discussion:
> https://lore.kernel.org/lkml/d8ad5cab-5183-cddf-fa9a-4e7b9b8c9377@victronenergy.com/

Hi Måns

O.K. did i mention memory of a goldfish?

This is the sort of detail that should be in the commit
message. Otherwise reviewers are going to ask for an explanation, even
if it has been explained once, 6 years ago.

I assume you also want this back ported to stable? Please add a Fixed:
tag, and a Cc: stable@...r.kernel.org tag. And set the patch subject
to [PATCH net v3] to indicate this is for the net tree, not net-next.

Thanks
	Andrew