diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 2829badbae38bfa9dbe1cf5b1e85949183293500..ef68e13c042debe5f7f1c4606f8fc83ab03f0389 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -817,7 +817,8 @@ static ssize_t tun_do_read(struct tun_struct *tun,
 
 	tun_debug(KERN_INFO, tun, "tun_chr_read\n");
 
-	add_wait_queue(&tun->wq.wait, &wait);
+	if (unlikely(!noblock))
+		add_wait_queue(&tun->wq.wait, &wait);
 	while (len) {
 		current->state = TASK_INTERRUPTIBLE;
 
@@ -848,7 +849,8 @@ static ssize_t tun_do_read(struct tun_struct *tun,
 	}
 
 	current->state = TASK_RUNNING;
-	remove_wait_queue(&tun->wq.wait, &wait);
+	if (unlikely(!noblock))
+		remove_wait_queue(&tun->wq.wait, &wait);
 
 	return ret;
 }