netdev - Re: [PATCH net-next v2 06/13] net: dsa: realtek: use phy

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Date:   Thu, 30 Dec 2021 16:44:26 -0300
From:   Luiz Angelo Daros de Luca <luizluca@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     "open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Arınç ÜNAL <arinc.unal@...nc9.com>
Subject: Re: [PATCH net-next v2 06/13] net: dsa: realtek: use phy_read in ds->ops

> >   static int realtek_smi_mdio_read(struct mii_bus *bus, int addr, int regnum)
> >   {
> > -     struct realtek_priv *priv = bus->priv;
> > +     struct dsa_switch *ds = ((struct realtek_priv *)bus->priv)->ds;
>
> No need to cast a void pointer, this applies throughout the entire patch
> series.
> --
Hi Florian,

Apologize for my poor C experience but I didn't understand your
suggestion. Simply removing the cast will not work because bus->priv
is void* and it needs to know it is realtek_priv in order to
indirectly reference ds. Should I keep the local priv variable instead
of removing it (this way, cast is not needed)?

Luiz