netdev - Re: [PATCH net-next] net: remove useless if check from register

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Date:	Wed, 12 Feb 2014 12:47:22 +0400
From:	Denis Kirjanov <kda@...ux-powerpc.org>
To:	Ding Tianhong <dingtianhong@...wei.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: remove useless if check from register_netdevice()

On 2/12/14, Ding Tianhong <dingtianhong@...wei.com> wrote:
> On 2014/2/12 15:45, Denis Kirjanov wrote:
>> remove useless if check from register_netdevice()
>>
>> Signed-off-by: Denis Kirjanov <kda@...ux-powerpc.org>
>> ---
>>  net/core/dev.c | 3 +--
>>  1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/net/core/dev.c b/net/core/dev.c
>> index 4ad1b78..4be9a37 100644
>> --- a/net/core/dev.c
>> +++ b/net/core/dev.c
>> @@ -5876,8 +5876,7 @@ int register_netdevice(struct net_device *dev)
>>  	if (dev->netdev_ops->ndo_init) {
>>  		ret = dev->netdev_ops->ndo_init(dev);
>>  		if (ret) {
>> -			if (ret > 0)
>> -				ret = -EIO;
>> +            ret = -EIO;
>
> and:
> some ndo_init() will return -ENOMEM, not only -EIO
>
>
>>  			goto out;
>>  		}
>>  	}
>>

Yes, I was thinking about that. The return code may contain everything.
Probably it's better to propagate return value back to
register_netdevice. On the other hand the return value -ENOTSUPP for
register_netdevice return value looks odd...

>
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