linux-kernel - Re: [PATCH v1] FIRMWARE: bcm47xx_nvram: Replace mac address parsing

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Date:   Tue, 12 Dec 2017 11:51:29 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Will Deacon <will.deacon@....com>,
        Dave Martin <Dave.Martin@....com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v1] FIRMWARE: bcm47xx_nvram: Replace mac address parsing

On Tue, 2017-12-12 at 11:28 +0200, Andy Shevchenko wrote:
> Replace sscanf() with mac_pton().

Oops, wrong patch to you guys, though, if you wish to apply...

I just send the intended one.

Sorry for noise.

> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/firmware/broadcom/bcm47xx_sprom.c | 20 +++++---------------
>  1 file changed, 5 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/firmware/broadcom/bcm47xx_sprom.c
> b/drivers/firmware/broadcom/bcm47xx_sprom.c
> index 62aa3cf09b4d..2b18a1608c1c 100644
> --- a/drivers/firmware/broadcom/bcm47xx_sprom.c
> +++ b/drivers/firmware/broadcom/bcm47xx_sprom.c
> @@ -137,20 +137,6 @@ static void nvram_read_leddc(const char *prefix,
> const char *name,
>  	*leddc_off_time = (val >> 16) & 0xff;
>  }
>  
> -static void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
> -{
> -	if (strchr(buf, ':'))
> -		sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
> &macaddr[0],
> -			&macaddr[1], &macaddr[2], &macaddr[3],
> &macaddr[4],
> -			&macaddr[5]);
> -	else if (strchr(buf, '-'))
> -		sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx",
> &macaddr[0],
> -			&macaddr[1], &macaddr[2], &macaddr[3],
> &macaddr[4],
> -			&macaddr[5]);
> -	else
> -		pr_warn("Can not parse mac address: %s\n", buf);
> -}
> -
>  static void nvram_read_macaddr(const char *prefix, const char *name,
>  			       u8 val[6], bool fallback)
>  {
> @@ -161,7 +147,11 @@ static void nvram_read_macaddr(const char
> *prefix, const char *name,
>  	if (err < 0)
>  		return;
>  
> -	bcm47xx_nvram_parse_macaddr(buf, val);
> +	strreplace(buf, '-', ':');
> +	if (mac_pton(buf, val))
> +		return;
> +
> +	pr_warn("Can not parse mac address: %s\n", buf);
>  }
>  
>  static void nvram_read_alpha2(const char *prefix, const char *name,

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy