netdev - Re: mv88e6321, dual cpu port

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Message-ID: <Y/DZJmn4OfVA+hRq@shell.armlinux.org.uk>
Date:   Sat, 18 Feb 2023 13:56:54 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Angelo Dureghello <angelo@...nel-space.org>,
        Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org
Subject: Re: mv88e6321, dual cpu port

On Sat, Feb 18, 2023 at 03:30:36PM +0200, Vladimir Oltean wrote:
> On Thu, Feb 16, 2023 at 07:39:11PM +0100, Angelo Dureghello wrote:
> > I have a last issue, migrating from 5.4.70,
> > in 5.15.32 i have this error for both sfp cages:
> > 
> > # [   45.860784] mv88e6085 5b040000.ethernet-1:1d: p0: phylink_mac_link_state() failed: -95
> > [   45.860814] mv88e6085 5b040000.ethernet-1:1d: p0: phylink_mac_link_state() failed: -95
> > [   49.093371] mv88e6085 5b040000.ethernet-1:1d: p1: phylink_mac_link_state() failed: -95
> > [   49.093400] mv88e6085 5b040000.ethernet-1:1d: p1: phylink_mac_link_state() failed: -95
> > 
> > Is seems related to the fact that i am in in-band-status,
> > but 6321 has not serdes_pcs_get_state() op.
> > 
> > How can i fix this ?
> > 
> > Thanks !
> > -- 
> > Angelo Dureghello
> 
> Looking at mv88e6321_ops in the latest net-next and in 5.4, I see no
> serdes ops implemented in net-next. OTOH, in 5.4, the equivalent of the
> current .serdes_pcs_get_state() which is now missing was .port_link_state().
> In 5.4, mv88e6321_ops had .port_link_state() set to mv88e6352_port_link_state(),
> but this got deleted with commit dc745ece3bd5 ("net: dsa: mv88e6xxx:
> remove port_link_state functions") and seemingly was not replaced with
> anything for 6321.
> 
> I don't actually know how this is supposed to work. Maybe Russell King can help?

I've no idea offhand, and as today I feel utterly shit due to post-
Covid, I'm not going to be able to sort through and work out what
happened for a few days. Sorry. I'll try to look at it next week
provided I feel better.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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