netdev - Re: [PATCH net 01/15] docs: net: dsa: update probing documentation

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Date:   Sun, 17 Jul 2022 17:14:34 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH net 01/15] docs: net: dsa: update probing documentation

Hi Vladimir

> +Switch registration from the perspective of a driver means passing a valid
> +``struct dsa_switch`` pointer to ``dsa_register_switch()``, usually from the
> +switch driver's probing function. The following members must be valid in the
> +provided structure:

> +
> +- ``ds->priv``: backpointer to a driver-private data structure which can be
> +  retrieved in all further DSA method callbacks.

I'm not sure this is strictly true. The DSA core itself should not use
ds->priv. And the driver could use other means, like
dev_get_platdata(ds->dev->pdev) to get at is private data. But in
practice it is true.

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew