linux-kernel - Re: [PATCH net-next v1 2/3] net: dsa: microchip: Remove redundant optimization in ksz8_w_phy

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Message-ID: <b3735179804cb941bbdd17cbdee5efd9a25a72df.camel@redhat.com>
Date:   Thu, 23 Nov 2023 11:54:57 +0100
From:   Paolo Abeni <pabeni@...hat.com>
To:     Oleksij Rempel <o.rempel@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vladimir Oltean <olteanv@...il.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Arun Ramadoss <arun.ramadoss@...rochip.com>
Cc:     kernel@...gutronix.de, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH net-next v1 2/3] net: dsa: microchip: Remove redundant
 optimization in ksz8_w_phy_bmcr

On Tue, 2023-11-21 at 16:24 +0100, Oleksij Rempel wrote:
> Remove the manual checks for register value changes in the
> ksz8_w_phy_bmcr function. Instead, rely on regmap_update_bits() for
> optimizing register updates.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  drivers/net/dsa/microchip/ksz8795.c | 95 +++++++++--------------------
>  1 file changed, 28 insertions(+), 67 deletions(-)
> 
> diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
> index 835157815937..4c1e21fd87da 100644
> --- a/drivers/net/dsa/microchip/ksz8795.c
> +++ b/drivers/net/dsa/microchip/ksz8795.c
> @@ -951,107 +951,68 @@ static int ksz8_w_phy_ctrl(struct ksz_device *dev, int port, u16 val)
>  static int ksz8_w_phy_bmcr(struct ksz_device *dev, int port, u16 val)
>  {
>  	const u16 *regs = dev->info->regs;
> -	u8 restart, ctrl, speed, data;
> +	u8 restart, speed, ctrl, restart_mask;

Very minor nit and only if you have to repost for some other reason,
please respect the reverse x-mas tree above.

Thanks,

Paolo