2 files changed, 7 insertions, 7 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 8393ec408cd4..1e5077d2cca6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -749,7 +749,8 @@ EXPORT_SYMBOL(dev_get_by_index);
  *      @ha: hardware address
  *
  *      Search for an interface by MAC address. Returns NULL if the device
- *      is not found or a pointer to the device. The caller must hold RCU
+ *      is not found or a pointer to the device.
+ *      The caller must hold RCU or RTNL.
  *      The returned device has not had its ref count increased
  *      and the caller must therefore be careful about locking
  *
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 04c8b69fd426..7927589813b5 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1017,14 +1017,13 @@ static int arp_req_set_proxy(struct net *net, struct net_device *dev, int on)
                 IPV4_DEVCONF_ALL(net, PROXY_ARP) = on;
                 return 0;
         }
-        if (__in_dev_get_rcu(dev)) {
-                IN_DEV_CONF_SET(__in_dev_get_rcu(dev), PROXY_ARP, on);
+        if (__in_dev_get_rtnl(dev)) {
+                IN_DEV_CONF_SET(__in_dev_get_rtnl(dev), PROXY_ARP, on);
                 return 0;
         }
         return -ENXIO;
 }
 
-/* must be called with rcu_read_lock() */
 static int arp_req_set_public(struct net *net, struct arpreq *r,
                 struct net_device *dev)
 {
@@ -1233,10 +1232,10 @@ int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg)
         if (!(r.arp_flags & ATF_NETMASK))
                 ((struct sockaddr_in *)&r.arp_netmask)->sin_addr.s_addr =
                                                            htonl(0xFFFFFFFFUL);
-        rcu_read_lock();
+        rtnl_lock();
         if (r.arp_dev[0]) {
                 err = -ENODEV;
-                dev = dev_get_by_name_rcu(net, r.arp_dev);
+                dev = __dev_get_by_name(net, r.arp_dev);
                 if (dev == NULL)
                         goto out;
 
@@ -1263,7 +1262,7 @@ int arp_ioctl(struct net *net, unsigned int cmd, void __user *arg)
                 break;
         }
 out:
-        rcu_read_unlock();
+        rtnl_unlock();
         if (cmd == SIOCGARP && !err && copy_to_user(arg, &r, sizeof(r)))
                 err = -EFAULT;
         return err;