[PATCH] Revert [NET_SCHED]: HTB: fix incorrect use of RB_EMPTY_NODE

[Ismail Donmez]

Hi,

With commit 10fd48f2376db52f08bf0420d2c4f580e39269e1 [1] ,  RB_EMPTY_NODE 
changed behaviour so it returns false when the node is empty as expected. 
Hence Herbert's fix for sched_htb.c should be reverted.

[1] 
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=10fd48f2376db52f08bf0420d2c4f580e39269e1;hp=9817064b68fef7e4580c6df1ea597e106b9ff88b

Regards,
ismail

-- 
They that can give up essential liberty to obtain a little temporary safety 
deserve neither liberty nor safety.
-- Benjamin Franklin

diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 6c058e3..1f1360e 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -391,7 +391,7 @@ static inline void htb_add_class_to_row(
 /* If this triggers, it is a bug in this code, but it need not be fatal */
 static void htb_safe_rb_erase(struct rb_node *rb, struct rb_root *root)
 {
-	if (!RB_EMPTY_NODE(rb)) {
+	if (RB_EMPTY_NODE(rb)) {
 		WARN_ON(1);
 	} else {
 		rb_erase(rb, root);