Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 17 insertions, 9 deletions

diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 2ecd24688554..08a3b0a6f5ab 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -258,6 +258,13 @@ static unsigned long route4_get(struct tcf_proto *tp, u32 handle)
 
 static int route4_init(struct tcf_proto *tp)
 {
+	struct route4_head *head;
+
+	head = kzalloc(sizeof(struct route4_head), GFP_KERNEL);
+	if (head == NULL)
+		return -ENOBUFS;
+
+	rcu_assign_pointer(tp->root, head);
 	return 0;
 }
 
@@ -270,13 +277,20 @@ route4_delete_filter(struct rcu_head *head)
 	kfree(f);
 }
 
-static void route4_destroy(struct tcf_proto *tp)
+static bool route4_destroy(struct tcf_proto *tp, bool force)
 {
 	struct route4_head *head = rtnl_dereference(tp->root);
 	int h1, h2;
 
 	if (head == NULL)
-		return;
+		return true;
+
+	if (!force) {
+		for (h1 = 0; h1 <= 256; h1++) {
+			if (rcu_access_pointer(head->table[h1]))
+				return false;
+		}
+	}
 
 	for (h1 = 0; h1 <= 256; h1++) {
 		struct route4_bucket *b;
@@ -301,6 +315,7 @@ static void route4_destroy(struct tcf_proto *tp)
 	}
 	RCU_INIT_POINTER(tp->root, NULL);
 	kfree_rcu(head, rcu);
+	return true;
 }
 
 static int route4_delete(struct tcf_proto *tp, unsigned long arg)
@@ -484,13 +499,6 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
 			return -EINVAL;
 
 	err = -ENOBUFS;
-	if (head == NULL) {
-		head = kzalloc(sizeof(struct route4_head), GFP_KERNEL);
-		if (head == NULL)
-			goto errout;
-		rcu_assign_pointer(tp->root, head);
-	}
-
 	f = kzalloc(sizeof(struct route4_filter), GFP_KERNEL);
 	if (!f)
 		goto errout;