diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 5bb87dd212799..fdc40a1c84c49 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -285,7 +285,9 @@ mt7615_regd_notifier(struct wiphy *wiphy,
 	if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR))
 		return;
 
+	mt7615_mutex_acquire(dev);
 	mt7615_dfs_init_radar_detector(phy);
+	mt7615_mutex_release(dev);
 }
 
 static void