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Date:   Thu, 18 Jun 2020 07:53:30 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     gaurav1086@...il.com
Cc:     jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [net/sched]: Remove redundant condition in qdisc_graft

From: Gaurav Singh <gaurav1086@...il.com>
Date: Thu, 18 Jun 2020 00:00:56 -0400

> parent cannot be NULL here since its in the else part
> of the if (parent == NULL) condition. Remove the extra
> check on parent pointer.
> 
> Signed-off-by: Gaurav Singh <gaurav1086@...il.com>
> ---
>  net/sched/sch_api.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
> index 9a3449b56bd6..be93ebcdb18d 100644
> --- a/net/sched/sch_api.c
> +++ b/net/sched/sch_api.c
> @@ -1094,7 +1094,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
>  
>  		/* Only support running class lockless if parent is lockless */
>  		if (new && (new->flags & TCQ_F_NOLOCK) &&
> -		    parent && !(parent->flags & TCQ_F_NOLOCK))
> +			!(parent->flags & TCQ_F_NOLOCK))

You've broken the indentation of this line, it was correctly indented
before your change.

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