--- a/drivers/net/wireless/virtual/mac80211_hwsim.c
+++ b/drivers/net/wireless/virtual/mac80211_hwsim.c
@@ -2730,7 +2730,9 @@ static void mac80211_hwsim_link_info_changed(struct ieee80211_hw *hw,
 			u32 bcn_int;
 			link_data->beacon_int = info->beacon_int * 1024;
 			tsf = mac80211_hwsim_get_tsf(hw, vif);
 			bcn_int = link_data->beacon_int;
+			if (!bcn_int)
+				return;
 			until_tbtt = bcn_int - do_div(tsf, bcn_int);
 
 			hrtimer_start(&link_data->beacon_timer,