tuntap: remove unused variable in __tun_detach()

The variable dev is initialized but never used
otherwise, so remove the unused variable.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index b7c457a..95837c1 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -409,14 +409,12 @@ static void __tun_detach(struct tun_file *tfile, bool clean)
 {
        struct tun_file *ntfile;
        struct tun_struct *tun;
-       struct net_device *dev;
 
        tun = rtnl_dereference(tfile->tun);
 
        if (tun && !tfile->detached) {
                u16 index = tfile->queue_index;
                BUG_ON(index >= tun->numqueues);
-               dev = tun->dev;
 
                rcu_assign_pointer(tun->tfiles[index],
                                   tun->tfiles[tun->numqueues - 1]);