netdev - Re: [PATCH v2] net: ns83820: drop pointless static qualifier in ns83820_probe

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Date:   Tue, 19 Feb 2019 09:31:35 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Mao Wenan <maowenan@...wei.com>
cc:     kernel-janitors@...r.kernel.org, netdev@...r.kernel.org,
        john.fastabend@...il.com, hawk@...nel.org,
        jakub.kicinski@...ronome.com, daniel@...earbox.net, ast@...nel.org
Subject: Re: [PATCH v2] net: ns83820: drop pointless static qualifier in
 ns83820_probe_phy()



On Tue, 19 Feb 2019, Mao Wenan wrote:

> There is no need to have the 'int first' static
> since new value always be assigned before use it.
>
> This patch cleans up the codes in ns83820_probe_phy() as well.

As mentioned previously, there is no use of first in the function at all,
other than setting it to 1.  So it can be just dropped completely.

"codes" is also a word that I am particularly not fond of.  Just "code" is
fine.

"cleans up" is not very specific about what is going on, and why.

julia

>
> Signed-off-by: Mao Wenan <maowenan@...wei.com>
> ---
>  v1->v2: delete unused codes.
>  drivers/net/ethernet/natsemi/ns83820.c | 17 +----------------
>  1 file changed, 1 insertion(+), 16 deletions(-)
>
> diff --git a/drivers/net/ethernet/natsemi/ns83820.c b/drivers/net/ethernet/natsemi/ns83820.c
> index 958fced4dacf..37694f6843fe 100644
> --- a/drivers/net/ethernet/natsemi/ns83820.c
> +++ b/drivers/net/ethernet/natsemi/ns83820.c
> @@ -1869,23 +1869,11 @@ static unsigned ns83820_mii_write_reg(struct ns83820 *dev, unsigned phy, unsigne
>  static void ns83820_probe_phy(struct net_device *ndev)
>  {
>  	struct ns83820 *dev = PRIV(ndev);
> -	static int first;
> +	int first;
>  	int i;
>  #define MII_PHYIDR1	0x02
>  #define MII_PHYIDR2	0x03
>
> -#if 0
> -	if (!first) {
> -		unsigned tmp;
> -		ns83820_mii_read_reg(dev, 1, 0x09);
> -		ns83820_mii_write_reg(dev, 1, 0x10, 0x0d3e);
> -
> -		tmp = ns83820_mii_read_reg(dev, 1, 0x00);
> -		ns83820_mii_write_reg(dev, 1, 0x00, tmp | 0x8000);
> -		udelay(1300);
> -		ns83820_mii_read_reg(dev, 1, 0x09);
> -	}
> -#endif
>  	first = 1;
>
>  	for (i=1; i<2; i++) {
> @@ -1894,9 +1882,6 @@ static void ns83820_probe_phy(struct net_device *ndev)
>  		a = ns83820_mii_read_reg(dev, i, MII_PHYIDR1);
>  		b = ns83820_mii_read_reg(dev, i, MII_PHYIDR2);
>
> -		//printk("%s: phy %d: 0x%04x 0x%04x\n",
> -		//	ndev->name, i, a, b);
> -
>  		for (j=0; j<0x16; j+=4) {
>  			dprintk("%s: [0x%02x] %04x %04x %04x %04x\n",
>  				ndev->name, j,
> --
> 2.20.1
>
>