mt76: mt7615: wake device before configuring hw keys

Make sure the device is in full-power before uploading keys to the hw
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/main.c

@@ -336,7 +336,7 @@ static int mt7615_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	struct mt7615_sta *msta = sta ? (struct mt7615_sta *)sta->drv_priv :
 				  &mvif->sta;
 	struct mt76_wcid *wcid = &msta->wcid;
-	int idx = key->keyidx;
+	int idx = key->keyidx, err;
 
 	/* The hardware does not support per-STA RX GTK, fallback
 	 * to software mode for these.
@@ -366,6 +366,8 @@ static int mt7615_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 		return -EOPNOTSUPP;
 	}
 
+	mt7615_mutex_acquire(dev);
+
 	if (cmd == SET_KEY) {
 		key->hw_key_idx = wcid->idx;
 		wcid->hw_key_idx = idx;
@@ -376,9 +378,13 @@ static int mt7615_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 			    cmd == SET_KEY ? key : NULL);
 
 	if (mt76_is_usb(&dev->mt76))
-		return mt7615_queue_key_update(dev, cmd, msta, key);
+		err = mt7615_queue_key_update(dev, cmd, msta, key);
+	else
+		err = mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
 
-	return mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
+	mt7615_mutex_release(dev);
+
+	return err;
 }
 
 static int mt7615_config(struct ieee80211_hw *hw, u32 changed)