[hch-misc:set_fs-net-tunnel.2 5/9] net/ipv6/sit.c:460:6: warning: variable 'err' set but not used

[hch-misc:set_fs-net-tunnel.2 5/9] net/ipv6/sit.c:460:6: warning: variable 'err' set but not used

[kbuild test robot]

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tree:   git://git.infradead.org/users/hch/misc.git set_fs-net-tunnel.2
head:   a0235d8add44d23022a18073e3ef61f10c2ec3bd
commit: a6e4b2bdb18cbd8dc7c3c5136fefbd807f47dae5 [5/9] sit: refactor ipip6_tunnel_ioctl
config: x86_64-defconfig (attached as .config)

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

net/ipv6/sit.c: In function 'ipip6_tunnel_prl_ctl':
>> net/ipv6/sit.c:460:6: warning: variable 'err' set but not used [-Wunused-but-set-variable]
int err;
^~~

vim +/err +460 net/ipv6/sit.c

   454	
   455	static int ipip6_tunnel_prl_ctl(struct net_device *dev, struct ifreq *ifr,
   456			int cmd)
   457	{
   458		struct ip_tunnel *t = netdev_priv(dev);
   459		struct ip_tunnel_prl prl;
 > 460		int err;
   461	
   462		if (!ns_capable(t->net->user_ns, CAP_NET_ADMIN))
   463			return -EPERM;
   464		if (dev == dev_to_sit_net(dev)->fb_tunnel_dev)
   465			return -EINVAL;
   466	
   467		if (copy_from_user(&prl, ifr->ifr_ifru.ifru_data, sizeof(prl)))
   468			return -EFAULT;
   469	
   470		switch (cmd) {
   471		case SIOCDELPRL:
   472			err = ipip6_tunnel_del_prl(t, &prl);
   473			break;
   474		case SIOCADDPRL:
   475		case SIOCCHGPRL:
   476			err = ipip6_tunnel_add_prl(t, &prl, cmd == SIOCCHGPRL);
   477			break;
   478		}
   479		dst_cache_reset(&t->dst_cache);
   480		netdev_state_change(dev);
   481		return 0;
   482	}
   483	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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