netdev - Re: [PATCH net 1/2] net: delete duplicate dev_set_rx

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Date:	Sun, 15 Jun 2014 20:05:20 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	panweiping3@...il.com
Cc:	netdev@...r.kernel.org, edumazet@...gle.com
Subject: Re: [PATCH net 1/2] net: delete duplicate dev_set_rx_mode() call

From: Weiping Pan <panweiping3@...il.com>
Date: Sun, 15 Jun 2014 18:05:09 +0800

> In __dev_open(), it already calls dev_set_rx_mode().
> and dev_set_rx_mode() has no effect for a net device which does not have
> IFF_UP flag set.
> 
> So the call of dev_set_rx_mode() is duplicate in __dev_change_flags().
> 
> Signed-off-by: Weiping Pan <panweiping3@...il.com>
> ---
>  net/core/dev.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 30eedf6..002678f 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -5434,9 +5434,6 @@ int __dev_change_flags(struct net_device *dev, unsigned int flags)
>  	ret = 0;
>  	if ((old_flags ^ flags) & IFF_UP) {	/* Bit is different  ? */
>  		ret = ((old_flags & IFF_UP) ? __dev_close : __dev_open)(dev);
> -
> -		if (!ret)
> -			dev_set_rx_mode(dev);
>  	}

A single line statement is what we end up with, so kill the curly braces
as they are no longer necessary.
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