linux-kernel - Re: [net-next RFC PATCH 1/4] net: dsa: qca8k: drop qca8k

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Date:   Mon, 18 Jul 2022 21:04:52 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Christian Marangi <ansuelsmth@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Russell King <linux@...linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [net-next RFC PATCH 1/4] net: dsa: qca8k: drop
 qca8k_read/write/rmw for regmap variant

On Sat, Jul 16, 2022 at 07:49:55PM +0200, Christian Marangi wrote:
> In preparation for code split, drop the remaining qca8k_read/write/rmw
> and use regmap helper directly.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> ---
>  drivers/net/dsa/qca/qca8k.c | 206 +++++++++++++++++-------------------
>  1 file changed, 95 insertions(+), 111 deletions(-)
> 
> diff --git a/drivers/net/dsa/qca/qca8k.c b/drivers/net/dsa/qca/qca8k.c
> index 1cbb05b0323f..2d34e15c2e6f 100644
> --- a/drivers/net/dsa/qca/qca8k.c
> +++ b/drivers/net/dsa/qca/qca8k.c
> @@ -184,24 +184,6 @@ qca8k_set_page(struct qca8k_priv *priv, u16 page)
>  	return 0;
>  }
>  
> -static int
> -qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val)
> -{
> -	return regmap_read(priv->regmap, reg, val);
> -}
> -
> -static int
> -qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
> -{
> -	return regmap_write(priv->regmap, reg, val);
> -}
> -
> -static int
> -qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val)
> -{
> -	return regmap_update_bits(priv->regmap, reg, mask, write_val);
> -}
> -

Could you please explain slowly to me why this change is needed? I don't get it.
Can't qca8k_read(), qca8k_write() and qca8k_rmw() be part of qca8k-common.c?