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 d0745dc819769c1641341aeaf0cc70ad500345ac..6760b86547df18b92bbf54575eadb85232bc963f 100644 (file)
--- 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();