--- zzzz-none-000/linux-4.4.60/net/bridge/br_stp_timer.c	2017-04-08 07:53:53.000000000 +0000
+++ jet-2400-727/linux-4.4.60/net/bridge/br_stp_timer.c	2021-03-17 14:36:41.000000000 +0000
@@ -40,7 +40,7 @@
 	if (br->dev->flags & IFF_UP) {
 		br_config_bpdu_generation(br);
 
-		if (br->stp_enabled != BR_USER_STP)
+		if (br->stp_enabled == BR_KERNEL_STP)
 			mod_timer(&br->hello_timer,
 				  round_jiffies(jiffies + br->hello_time));
 	}