netdev - RE: [PATCH net-next 2/2] net: dsa: microchip: Add SGMII port support to KSZ9477 switch

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Message-ID:
 <DM3PR11MB8736CC54CC0674DE06B4E11AEC592@DM3PR11MB8736.namprd11.prod.outlook.com>
Date: Tue, 12 Nov 2024 02:43:51 +0000
From: <Tristram.Ha@...rochip.com>
To: <olteanv@...il.com>
CC: <Woojung.Huh@...rochip.com>, <andrew@...n.ch>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<marex@...x.de>, <UNGLinuxDriver@...rochip.com>,
	<devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net-next 2/2] net: dsa: microchip: Add SGMII port support
 to KSZ9477 switch

> Subject: Re: [PATCH net-next 2/2] net: dsa: microchip: Add SGMII port support to
> KSZ9477 switch
> 
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content
> is safe
> 
> On Sat, 9 Nov 2024 at 03:56, <Tristram.Ha@...rochip.com> wrote:
> > diff --git a/drivers/net/dsa/microchip/ksz_common.c
> b/drivers/net/dsa/microchip/ksz_common.c
> > index f73833e24622..8163342d778a 100644
> > --- a/drivers/net/dsa/microchip/ksz_common.c
> > +++ b/drivers/net/dsa/microchip/ksz_common.c
> > @@ -354,10 +354,30 @@ static void ksz9477_phylink_mac_link_up(struct
> phylink_config *config,
> >                                         int speed, int duplex, bool tx_pause,
> >                                         bool rx_pause);
> >
> > +static struct phylink_pcs *
> > +ksz_phylink_mac_select_pcs(struct phylink_config *config,
> > +                          phy_interface_t interface)
> > +{
> > +       struct dsa_port *dp = dsa_phylink_to_port(config);
> > +       struct ksz_device *dev = dp->ds->priv;
> > +       struct ksz_port *p = &dev->ports[dp->index];
> > +
> > +       if (!p->sgmii)
> > +               return ERR_PTR(-EOPNOTSUPP);
> 
> Since commit 7530ea26c810 ("net: phylink: remove "using_mac_select_pcs""),
> returning ERR_PTR(-EOPNOTSUPP) here would actually be fatal. This error
> code no longer carries any special meaning.
> 
> It would be a good idea to Cc Russell King for phylink changes.

Thanks.  Will update the code.