netdev - Re: [PATCH] net: sky2: allow mac to come from dt

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Date:	Wed, 5 Mar 2014 07:38:01 -0800
From:	Tim Harvey <tharvey@...eworks.com>
To:	Rob Herring <robherring2@...il.com>
Cc:	Stephen Hemminger <stephen@...workplumber.org>,
	netdev <netdev@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH] net: sky2: allow mac to come from dt

On Tue, Mar 4, 2014 at 10:32 PM, Rob Herring <robherring2@...il.com> wrote:
<snip>
>> @@ -4805,8 +4808,27 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
>>
>>         dev->features |= dev->hw_features;
>>
>> +       /* try to get mac address in the following order:
>> +        * 1) from device tree data
>> +        * 2) from internal registers set by bootloader
>> +        */
>> +       iap = NULL;
>> +       if (IS_ENABLED(CONFIG_OF)) {
>
> This shouldn't be needed.
>
>> +               struct device_node *np = hw->pdev->dev.of_node;
>> +               if (np)
>> +                       iap = (unsigned char *) of_get_mac_address(np);
>> +       }
>
> This should all just be 1 line. of_get_mac_address should just return
> NULL if !CONFIG_OF or np == NULL.

agreed - I verified this is true

>
>> +
>> +       /* 2) mac registers set by bootloader
>> +        */
>> +       if (!iap || !is_valid_ether_addr(iap)) {
>
> Perhaps is_valid_ether_addr check should also be moved into of_get_mac_address.
>

looks like it already does that - I'll simplify the above

> Rob

Thanks for the review!

Tim
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