From: <Rakesh.Sankaranarayanan@microchip.com>
To: <andrew@lunn.ch>
Cc: <olteanv@gmail.com>, <davem@davemloft.net>,
<linux@armlinux.org.uk>, <Woojung.Huh@microchip.com>,
<linux-kernel@vger.kernel.org>, <pabeni@redhat.com>,
<kuba@kernel.org>, <edumazet@google.com>,
<netdev@vger.kernel.org>, <UNGLinuxDriver@microchip.com>,
<f.fainelli@gmail.com>
Subject: Re: [RFC PATCH net-next 07/11] net: dsa: microchip: lan937x: update switch register
Date: Fri, 3 Feb 2023 10:48:02 +0000 [thread overview]
Message-ID: <2d6f98b01fdce3247b8f93f0467e7f1cdb6e080e.camel@microchip.com> (raw)
In-Reply-To: <Y9vZdMQgqhaGIcdf@lunn.ch>
Hi Andrew,
Thanks for the comment, I will change and test the code as you
explained and update the patch in next revision.
Thanks,
Rakesh S.
On Thu, 2023-02-02 at 16:40 +0100, Andrew Lunn wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you
> know the content is safe
>
> On Thu, Feb 02, 2023 at 06:29:26PM +0530, Rakesh Sankaranarayanan
> wrote:
> > Second switch in cascaded connection doesn't have port with macb
> > interface. dsa_switch_register returns error if macb interface is
> > not up. Due to this reason, second switch in cascaded connection
> > will
> > not report error during dsa_switch_register and mib thread work
> > will be
> > invoked even if actual switch register is not done. This will lead
> > to
> > kernel warning and it can be avoided by checking device tree setup
> > status. This will return true only after actual switch register is
> > done.
>
> What i think you need to do is move the code into ksz_setup().
>
> With a D in DSA setup, dsa_switch_register() adds the switch to the
> list of switches, and then a check is performed to see if all
> switches
> in the cluster have been registered. If not, it just returns. If all
> switches have been registered, it then iterates over all the switches
> can calls dsa_switch_ops.setup().
>
> By moving the start of the MIB counter into setup(), it will only be
> started once all the switches are present, and it means you don't
> need
> to look at DSA core internal state.
>
> Andrew
next prev parent reply other threads:[~2023-02-03 10:48 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 12:59 [RFC PATCH net-next 00/11] net: dsa: microchip: lan937x: add switch cascade support Rakesh Sankaranarayanan
2023-02-02 12:59 ` [RFC PATCH net-next 01/11] net: dsa: microchip: lan937x: add cascade tailtag Rakesh Sankaranarayanan
2023-02-03 23:10 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 02/11] net: dsa: microchip: lan937x: update SMI index Rakesh Sankaranarayanan
2023-02-03 23:18 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 03/11] net: dsa: microchip: lan937x: enable cascade port Rakesh Sankaranarayanan
2023-02-03 23:24 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 04/11] net: dsa: microchip: lan937x: update port number for LAN9373 Rakesh Sankaranarayanan
2023-02-02 15:19 ` Andrew Lunn
2023-02-03 10:43 ` Rakesh.Sankaranarayanan
2023-02-03 23:26 ` Vladimir Oltean
2023-02-06 14:38 ` Arun.Ramadoss
2023-02-02 12:59 ` [RFC PATCH net-next 05/11] net: dsa: microchip: lan937x: add shared global interrupt Rakesh Sankaranarayanan
2023-02-02 15:25 ` Andrew Lunn
2023-02-02 12:59 ` [RFC PATCH net-next 06/11] net: dsa: microchip: lan937x: get cascade tag protocol Rakesh Sankaranarayanan
2023-02-03 23:30 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 07/11] net: dsa: microchip: lan937x: update switch register Rakesh Sankaranarayanan
2023-02-02 15:40 ` Andrew Lunn
2023-02-03 10:48 ` Rakesh.Sankaranarayanan [this message]
2023-02-03 23:37 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 08/11] net: dsa: microchip: lan937x: avoid mib read for cascaded port Rakesh Sankaranarayanan
2023-02-02 15:45 ` Andrew Lunn
2023-02-02 12:59 ` [RFC PATCH net-next 09/11] net: dsa: microchip: lan937x: update port membership with dsa port Rakesh Sankaranarayanan
2023-02-03 23:47 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 10/11] net: dsa: microchip: lan937x: update vlan untag membership Rakesh Sankaranarayanan
2023-02-03 23:48 ` Vladimir Oltean
2023-02-02 12:59 ` [RFC PATCH net-next 11/11] net: dsa: microchip: lan937x: update multicast table Rakesh Sankaranarayanan
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