linux-kernel - [PATCH] [net/sched]: Remove redundant condition in qdisc

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Message-Id: <20200618203632.15438-1-gaurav1086@gmail.com>
Date:   Thu, 18 Jun 2020 16:36:31 -0400
From:   Gaurav Singh <gaurav1086@...il.com>
To:     gaurav1086@...il.com, Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        netdev@...r.kernel.org (open list:TC subsystem),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] [net/sched]: Remove redundant condition in qdisc_graft

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 | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 9a3449b56bd6..11ebba60da3b 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1093,8 +1093,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
 		int err;
 
 		/* Only support running class lockless if parent is lockless */
-		if (new && (new->flags & TCQ_F_NOLOCK) &&
-		    parent && !(parent->flags & TCQ_F_NOLOCK))
+		if (new && (new->flags & TCQ_F_NOLOCK) && !(parent->flags & TCQ_F_NOLOCK))
 			qdisc_clear_nolock(new);
 
 		if (!cops || !cops->graft)
-- 
2.17.1