netdev - Re: [PATCH net-next 05/13] net: dsa: realtek: use phy

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Date:   Sat, 18 Dec 2021 03:50:31 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     luizluca@...il.com
Cc:     netdev@...r.kernel.org, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, olteanv@...il.com, ALSI@...g-olufsen.dk,
        arinc.unal@...nc9.com
Subject: Re: [PATCH net-next 05/13] net: dsa: realtek: use phy_read in ds->ops

On Thu, Dec 16, 2021 at 9:14 PM <luizluca@...il.com> wrote:
> From: Luiz Angelo Daros de Luca <luizluca@...il.com>
>
> The ds->ops->phy_read will only be used if the ds->slave_mii_bus
> was not initialized. Calling realtek_smi_setup_mdio will create a
> ds->slave_mii_bus, making ds->ops->phy_read dormant.
>
> Using ds->ops->phy_read will allow switches connected through non-SMI
> interfaces (like mdio) to let ds allocate slave_mii_bus and reuse the
> same code.
>
> Tested-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> Signed-off-by: Luiz Angelo Daros de Luca <luizluca@...il.com>
(...)
> -static int rtl8365mb_phy_read(struct realtek_priv *priv, int phy, int regnum)
> +static int rtl8365mb_phy_read(struct dsa_switch *ds, int phy, int regnum)
>  {
>         u32 ocp_addr;
>         u16 val;
>         int ret;
> +       struct realtek_priv *priv = ds->priv;

Needs to be on top (reverse christmas tree, christmas is getting close).

> -static int rtl8365mb_phy_write(struct realtek_priv *priv, int phy, int regnum,
> +static int rtl8365mb_phy_write(struct dsa_switch *ds, int phy, int regnum,
>                                u16 val)
>  {
>         u32 ocp_addr;
>         int ret;
> +       struct realtek_priv *priv = (struct realtek_priv *)ds->priv;

Dito.

> -static int rtl8366rb_phy_read(struct realtek_priv *priv, int phy, int regnum)
> +static int rtl8366rb_phy_read(struct dsa_switch *ds, int phy, int regnum)
>  {
>         u32 val;
>         u32 reg;
>         int ret;
> +       struct realtek_priv *priv = ds->priv;

Dito.

> -static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum,
> +static int rtl8366rb_phy_write(struct dsa_switch *ds, int phy, int regnum,
>                                u16 val)
>  {
>         u32 reg;
>         int ret;
> +       struct realtek_priv *priv = ds->priv;

Dito.

Other than that it's a great patch, so with these nitpicky changes
feel free to add:
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij