Merge remote-tracking branches 'asoc/topic/inntel', 'asoc/topic/input', 'asoc/topic...

[mirror_ubuntu-bionic-kernel.git] / drivers / net / macvtap.c

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 070e3290aa6efea6fcb505cdf0860a4dce676b74..7869b0651576fa6432b9608adb906fc7e1fccd26 100644 (file)
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -491,7 +491,13 @@ static int macvtap_newlink(struct net *src_net,
        /* Don't put anything that may fail after macvlan_common_newlink
         * because we can't undo what it does.
         */
-       return macvlan_common_newlink(src_net, dev, tb, data);
+       err = macvlan_common_newlink(src_net, dev, tb, data);
+       if (err) {
+               netdev_rx_handler_unregister(dev);
+               return err;
+       }
+
+       return 0;
 }
 
 static void macvtap_dellink(struct net_device *dev,
@@ -736,13 +742,8 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
 
        if (zerocopy)
                err = zerocopy_sg_from_iter(skb, from);
-       else {
+       else
                err = skb_copy_datagram_from_iter(skb, 0, from, len);
-               if (!err && m && m->msg_control) {
-                       struct ubuf_info *uarg = m->msg_control;
-                       uarg->callback(uarg, false);
-               }
-       }
 
        if (err)
                goto err_kfree;
@@ -773,7 +774,11 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
                skb_shinfo(skb)->destructor_arg = m->msg_control;
                skb_shinfo(skb)->tx_flags |= SKBTX_DEV_ZEROCOPY;
                skb_shinfo(skb)->tx_flags |= SKBTX_SHARED_FRAG;
+       } else if (m && m->msg_control) {
+               struct ubuf_info *uarg = m->msg_control;
+               uarg->callback(uarg, false);
        }
+
        if (vlan) {
                skb->dev = vlan->dev;
                dev_queue_xmit(skb);