linux-kernel - Re: [PATCH net] drivers: net: Don't print unpopulated net

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Date:	Wed, 11 May 2016 19:26:31 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	harvey.hunt@...tec.com
Cc:	robert.jarzmik@...e.fr, Baohua.Song@....com, marcel@...wiler.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] drivers: net: Don't print unpopulated net_device
 name

From: Harvey Hunt <harvey.hunt@...tec.com>
Date: Tue, 10 May 2016 17:43:21 +0100

> @@ -1686,8 +1686,7 @@ dm9000_probe(struct platform_device *pdev)
>  	}
>  
>  	if (!is_valid_ether_addr(ndev->dev_addr)) {
> -		dev_warn(db->dev, "%s: Invalid ethernet MAC address. Please "
> -			 "set using ifconfig\n", ndev->name);
> +		dev_warn(db->dev, "Invalid ethernet MAC address. Please set using ifconfig\n");
>  
>  		eth_hw_addr_random(ndev);
>  		mac_src = "random";

If we don't print the netdev name, it's harder for the user to see which
adapter has the problem.

Therefore, it is better if you save some boolean state into a local variable
here, then print the warning right after register_netdev().

Likewise for the rest of your changes too.