netdev - Re: [PATCH net-next v2 1/2] tipc: make the code look more better

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Message-ID: <52BA4622.3060702@windriver.com>
Date:	Wed, 25 Dec 2013 10:42:42 +0800
From:	Ying Xue <ying.xue@...driver.com>
To:	Wang Weidong <wangweidong1@...wei.com>,
	<jeremy.kalman@...driver.com>, <jon.maloy@...csson.com>,
	<davem@...emloft.net>
CC:	<David.Laight@...LAB.COM>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2 1/2] tipc: make the code look more better

On 12/25/2013 10:11 AM, Wang Weidong wrote:
> In commit 0cee6bbe06f ("tipc: remove unnecessary variables and conditions")
> didn't make the code look best. So fix it. This patch is cosmetic
> and does not change the operation of TIPC in any way.
> 

I cannot see what value the patch does provide.

Actually the original logic seems better understandable for us because
it immediately lets us know how to do if "tp_ptr->connected" is true.
Instead the patch has a little negative effect on performance because
"tp_ptr->connected" is true in most time.

Regards,
Ying

> Suggested-by: David Laight <David.Laight@...LAB.COM>
> Signed-off-by: Wang Weidong <wangweidong1@...wei.com>
> ---
>  net/tipc/port.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/net/tipc/port.c b/net/tipc/port.c
> index 5fd4c8c..ee81be0 100644
> --- a/net/tipc/port.c
> +++ b/net/tipc/port.c
> @@ -832,14 +832,13 @@ exit:
>   */
>  int __tipc_disconnect(struct tipc_port *tp_ptr)
>  {
> -	if (tp_ptr->connected) {
> -		tp_ptr->connected = 0;
> -		/* let timer expire on it's own to avoid deadlock! */
> -		tipc_nodesub_unsubscribe(&tp_ptr->subscription);
> -		return 0;
> -	}
> +	if (!tp_ptr->connected)
> +		return -ENOTCONN;
>  
> -	return -ENOTCONN;
> +	tp_ptr->connected = 0;
> +	/* let timer expire on it's own to avoid deadlock! */
> +	tipc_nodesub_unsubscribe(&tp_ptr->subscription);
> +	return 0;
>  }
>  
>  /*
> 

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