[U-Boot] [PATCH] Ethernet: let user know if there is no valid ethernet address

[Marek Vasut <marex@denx.de>]

On Friday, July 11, 2014 at 11:42:13 AM, Pavel Machek wrote:
> When there's no ethernet address available, u-boot currently prints
> "could not set ethernet address", but fails to mention that there's no
> address it could set. Make it a bit less confusing.
> 
> Signed-off-by: Pavel Machek <pavel@denx.de>
> 
> diff --git a/net/eth.c b/net/eth.c
> index 99386e3..b72ae84 100644
> --- a/net/eth.c
> +++ b/net/eth.c
> @@ -179,10 +179,12 @@ int eth_write_hwaddr(struct eth_device *dev, const
> char *base_name, dev->name);
>  	}
> 
> -	if (dev->write_hwaddr &&
> -			!eth_mac_skip(eth_number)) {
> -		if (!is_valid_ether_addr(dev->enetaddr))
> +	if (dev->write_hwaddr && !eth_mac_skip(eth_number)) {
> +		if (!is_valid_ether_addr(dev->enetaddr)) {
> +			printf("\nError: %s ethernet address not valid: %pM\n",
> +				 dev->name, dev->enetaddr);
>  			return -1;

You might as well return -EINVAL here while at it.

btw. I think I should really NAK you a patch or two, just so you can continue 
complaining to me about how noone likes you here ;-)

Best regards,
Marek Vasut