1 files changed, 12 insertions, 9 deletions

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 20a17938c62b..e525a6cf5587 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -109,7 +109,7 @@ struct tun_struct {
 
         struct tap_filter       txflt;
         struct socket           socket;
-
+        struct socket_wq        wq;
 #ifdef TUN_DEBUG
         int debug;
 #endif
@@ -323,7 +323,7 @@ static void tun_net_uninit(struct net_device *dev)
         /* Inform the methods they need to stop using the dev.
          */
         if (tfile) {
-                wake_up_all(&tun->socket.wait);
+                wake_up_all(&tun->wq.wait);
                 if (atomic_dec_and_test(&tfile->count))
                         __tun_detach(tun);
         }
@@ -398,7 +398,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
         /* Notify and wake up reader process */
         if (tun->flags & TUN_FASYNC)
                 kill_fasync(&tun->fasync, SIGIO, POLL_IN);
-        wake_up_interruptible_poll(&tun->socket.wait, POLLIN |
+        wake_up_interruptible_poll(&tun->wq.wait, POLLIN |
                                    POLLRDNORM | POLLRDBAND);
         return NETDEV_TX_OK;
 
@@ -498,7 +498,7 @@ static unsigned int tun_chr_poll(struct file *file, poll_table * wait)
 
         DBG(KERN_INFO "%s: tun_chr_poll\n", tun->dev->name);
 
-        poll_wait(file, &tun->socket.wait, wait);
+        poll_wait(file, &tun->wq.wait, wait);
 
         if (!skb_queue_empty(&sk->sk_receive_queue))
                 mask |= POLLIN | POLLRDNORM;
@@ -773,7 +773,7 @@ static ssize_t tun_do_read(struct tun_struct *tun,
 
         DBG(KERN_INFO "%s: tun_chr_read\n", tun->dev->name);
 
-        add_wait_queue(&tun->socket.wait, &wait);
+        add_wait_queue(&tun->wq.wait, &wait);
         while (len) {
                 current->state = TASK_INTERRUPTIBLE;
 
@@ -804,7 +804,7 @@ static ssize_t tun_do_read(struct tun_struct *tun,
         }
 
         current->state = TASK_RUNNING;
-        remove_wait_queue(&tun->socket.wait, &wait);
+        remove_wait_queue(&tun->wq.wait, &wait);
 
         return ret;
 }
@@ -861,6 +861,7 @@ static struct rtnl_link_ops tun_link_ops __read_mostly = {
 static void tun_sock_write_space(struct sock *sk)
 {
         struct tun_struct *tun;
+        wait_queue_head_t *wqueue;
 
         if (!sock_writeable(sk))
                 return;
@@ -868,8 +869,9 @@ static void tun_sock_write_space(struct sock *sk)
         if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags))
                 return;
 
-        if (sk_sleep(sk) && waitqueue_active(sk_sleep(sk)))
-                wake_up_interruptible_sync_poll(sk_sleep(sk), POLLOUT |
+        wqueue = sk_sleep(sk);
+        if (wqueue && waitqueue_active(wqueue))
+                wake_up_interruptible_sync_poll(wqueue, POLLOUT |
                                                 POLLWRNORM | POLLWRBAND);
 
         tun = tun_sk(sk)->tun;
@@ -1039,7 +1041,8 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
                 if (!sk)
                         goto err_free_dev;
 
-                init_waitqueue_head(&tun->socket.wait);
+                tun->socket.wq = &tun->wq;
+                init_waitqueue_head(&tun->wq.wait);
                 tun->socket.ops = &tun_socket_ops;
                 sock_init_data(&tun->socket, sk);
                 sk->sk_write_space = tun_sock_write_space;