linux-kernel - Re: [PATCH] pch_phub: re-use native MAC address parser

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Date:	Tue, 28 May 2013 11:49:02 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] pch_phub: re-use native MAC address parser

On Tue, 2013-04-23 at 16:31 +0300, Andy Shevchenko wrote: 
> We have mac_pton() helper to parse MAC addresses.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/misc/pch_phub.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
> index 931e635..8b4d4fb 100644
> --- a/drivers/misc/pch_phub.c
> +++ b/drivers/misc/pch_phub.c
> @@ -633,17 +633,13 @@ static ssize_t show_pch_mac(struct device *dev, struct device_attribute *attr,
>  static ssize_t store_pch_mac(struct device *dev, struct device_attribute *attr,
>  			     const char *buf, size_t count)
>  {
> -	u8 mac[6];
> +	u8 mac[ETH_ALEN];
>  	ssize_t rom_size;
>  	struct pch_phub_reg *chip = dev_get_drvdata(dev);
>  
> -	if (count != 18)
> +	if (!mac_pton(buf, mac))
>  		return -EINVAL;
>  
> -	sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
> -		(u32 *)&mac[0], (u32 *)&mac[1], (u32 *)&mac[2], (u32 *)&mac[3],
> -		(u32 *)&mac[4], (u32 *)&mac[5]);
> -
>  	chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
>  	if (!chip->pch_phub_extrom_base_address)
>  		return -ENOMEM;

Arnd, do you have any comment on this one?

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