linux-kernel - Re: [PATCH] net: ethernet: marvell: sky2.c: Cleaning up missing null-terminate in conjunction with strncpy

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Message-ID: <20140914201910.1de7b857@urahara>
Date:	Sun, 14 Sep 2014 20:19:10 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Mirko Lindner <mlindner@...vell.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: ethernet: marvell: sky2.c:  Cleaning up missing
 null-terminate in conjunction with strncpy

On Sun, 14 Sep 2014 19:33:43 +0200
Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se> wrote:

> Replacing strncpy with strlcpy to avoid strings that lacks null terminate.
> 
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
> ---
>  drivers/net/ethernet/marvell/sky2.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
> index dba48a5c..7053d38 100644
> --- a/drivers/net/ethernet/marvell/sky2.c
> +++ b/drivers/net/ethernet/marvell/sky2.c
> @@ -4907,7 +4907,7 @@ static const char *sky2_name(u8 chipid, char *buf, int sz)
>  	};
>  
>  	if (chipid >= CHIP_ID_YUKON_XL && chipid <= CHIP_ID_YUKON_OP_2)
> -		strncpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
> +		strlcpy(buf, name[chipid - CHIP_ID_YUKON_XL], sz);
>  	else
>  		snprintf(buf, sz, "(chip %#x)", chipid);
>  	return buf;

Useless and unnecessary since the list of names is right there.
Why not avoid the copy?
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