linux-kernel - Re: [PATCH net-next v2 01/10] net: wan: Remove unnecessary (void*) conversions

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Message-ID: <23e98085-8f07-4ee2-8487-8e3b439b69f4@lunn.ch>
Date:   Mon, 10 Jul 2023 18:34:32 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Su Hui <suhui@...china.com>
Cc:     qiang.zhao@....com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, wuych <yunchuan@...china.com>
Subject: Re: [PATCH net-next v2 01/10] net: wan: Remove unnecessary (void*)
 conversions

On Mon, Jul 10, 2023 at 02:39:33PM +0800, Su Hui wrote:
> From: wuych <yunchuan@...china.com>
> 
> Pointer variables of void * type do not require type cast.
> 
> Signed-off-by: wuych <yunchuan@...china.com>
> ---
>  drivers/net/wan/fsl_ucc_hdlc.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
> index 47c2ad7a3e42..73c73d8f4bb2 100644
> --- a/drivers/net/wan/fsl_ucc_hdlc.c
> +++ b/drivers/net/wan/fsl_ucc_hdlc.c
> @@ -350,11 +350,11 @@ static int uhdlc_init(struct ucc_hdlc_private *priv)
>  static netdev_tx_t ucc_hdlc_tx(struct sk_buff *skb, struct net_device *dev)
>  {
>  	hdlc_device *hdlc = dev_to_hdlc(dev);
> -	struct ucc_hdlc_private *priv = (struct ucc_hdlc_private *)hdlc->priv;
> -	struct qe_bd *bd;
> -	u16 bd_status;
> +	struct ucc_hdlc_private *priv = hdlc->priv;
>  	unsigned long flags;
>  	__be16 *proto_head;
> +	struct qe_bd *bd;
> +	u16 bd_status;

When dealing with existing broken reverse Christmas tree, please don't
make it worse with a change. But actually fixing it should be in a
different patch.

We want patches to be obviously correct. By removing the cast and
moving variables around, it is less obvious it is correct, than having
two patches.

       Andrew