[PATCH net-next] Revert "net: sched: fw: don't set arg->stop in fw_walk() when empty"

[Vlad Buslov <vladbu@mellanox.com>]

This reverts commit 31a998487641 ("net: sched: fw: don't set arg->stop in
fw_walk() when empty")

Cls API function tcf_proto_is_empty() was changed in commit
6676d5e416ee ("net: sched: set dedicated tcf_walker flag when tp is empty")
to no longer depend on arg->stop to determine that classifier instance is
empty. Instead, it adds dedicated arg->nonempty field, which makes the fix
in fw classifier no longer necessary.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
---
 net/sched/cls_fw.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 456ee6e62dfa..ad036b00427d 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -363,7 +363,10 @@ static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg,
 	struct fw_head *head = rtnl_dereference(tp->root);
 	int h;
 
-	if (head == NULL || arg->stop)
+	if (head == NULL)
+		arg->stop = 1;
+
+	if (arg->stop)
 		return;
 
 	for (h = 0; h < HTSIZE; h++) {
-- 
2.13.6