linux-kernel - Re: [PATCH][net-next] net: bridge: remove redundant check to see if err is set

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Date:   Tue, 7 Feb 2017 12:30:17 +0100
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     Colin King <colin.king@...onical.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        "David S . Miller" <davem@...emloft.net>,
        bridge@...ts.linux-foundation.org, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][net-next] net: bridge: remove redundant check to see if
 err is set

On 07/02/17 11:56, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The error check on err is redundant as it is being checked
> previously each time it has been updated.  Remove this redundant
> check.
> 
> Detected with CoverityScan, CID#140030("Logically dead code")
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  net/bridge/br_netlink.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
> index fc5d885..cdc4e2a 100644
> --- a/net/bridge/br_netlink.c
> +++ b/net/bridge/br_netlink.c
> @@ -612,9 +612,6 @@ static int br_afspec(struct net_bridge *br,
>  				return err;
>  			break;
>  		}
> -
> -		if (err)
> -			return err;
>  	}
>  
>  	return err;
> 

Actually that code can be reduced further, I'll follow up with a patch later.

Reviewed-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>