netdev - Re: [PATCH net-next v4 08/11] net: dsa: realtek: rtl8365mb: use GENMASK(n-1,0) instead of BIT(n)-1

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Date:   Mon, 10 Jan 2022 13:18:31 +0000
From:   Alvin Šipraga <ALSI@...g-olufsen.dk>
To:     Luiz Angelo Daros de Luca <luizluca@...il.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "vivien.didelot@...il.com" <vivien.didelot@...il.com>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>,
        "olteanv@...il.com" <olteanv@...il.com>,
        "arinc.unal@...nc9.com" <arinc.unal@...nc9.com>,
        "frank-w@...lic-files.de" <frank-w@...lic-files.de>
Subject: Re: [PATCH net-next v4 08/11] net: dsa: realtek: rtl8365mb: use
 GENMASK(n-1,0) instead of BIT(n)-1

Luiz Angelo Daros de Luca <luizluca@...il.com> writes:

> Signed-off-by: Luiz Angelo Daros de Luca <luizluca@...il.com>
> Tested-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Reviewed-by: Alvin Šipraga <alsi@...g-olufsen.dk>

> ---
>  drivers/net/dsa/realtek/rtl8365mb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
> index e115129cd5cd..b22f50a9d1ef 100644
> --- a/drivers/net/dsa/realtek/rtl8365mb.c
> +++ b/drivers/net/dsa/realtek/rtl8365mb.c
> @@ -1973,7 +1973,7 @@ static int rtl8365mb_detect(struct realtek_priv *priv)
>  		mb->priv = priv;
>  		mb->chip_id = chip_id;
>  		mb->chip_ver = chip_ver;
> -		mb->port_mask = BIT(priv->num_ports) - 1;
> +		mb->port_mask = GENMASK(priv->num_ports - 1, 0);
>  		mb->learn_limit_max = RTL8365MB_LEARN_LIMIT_MAX_8365MB_VC;
>  		mb->jam_table = rtl8365mb_init_jam_8365mb_vc;
>  		mb->jam_size = ARRAY_SIZE(rtl8365mb_init_jam_8365mb_vc);