From: Li RongQing <lirongqing@baidu.com>
Date: Thu, 6 Dec 2018 08:28:11 +0000 (+0800)
Subject: tun: remove unnecessary check in tun_flow_update
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5c327f673d2f134ac01c068b511c6ab816b4b41c;p=openwrt%2Fstaging%2Fblogic.git

tun: remove unnecessary check in tun_flow_update

caller has guaranted that rxhash is not zero

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index d0745dc81976..6760b86547df 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -529,10 +529,7 @@ static void tun_flow_update(struct tun_struct *tun, u32 rxhash,
 	unsigned long delay = tun->ageing_time;
 	u16 queue_index = tfile->queue_index;
 
-	if (!rxhash)
-		return;
-	else
-		head = &tun->flows[tun_hashfn(rxhash)];
+	head = &tun->flows[tun_hashfn(rxhash)];
 
 	rcu_read_lock();