mt76: always init to 0 mcu messages

Always initialize to 0 mcu messages since if they are not propely
configured they could hang the firmware.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mcu.c

@@ -9,14 +9,16 @@ struct sk_buff *
 mt76_mcu_msg_alloc(const void *data, int head_len,
 		   int data_len, int tail_len)
 {
+	int length = head_len + data_len + tail_len;
 	struct sk_buff *skb;
 
-	skb = alloc_skb(head_len + data_len + tail_len,
-			GFP_KERNEL);
+	skb = alloc_skb(length, GFP_KERNEL);
 	if (!skb)
 		return NULL;
 
+	memset(skb->head, 0, length);
 	skb_reserve(skb, head_len);
+
 	if (data && data_len)
 		skb_put_data(skb, data, data_len);
 

drivers/net/wireless/mediatek/mt76/mt7603/mcu.c

@@ -27,7 +27,6 @@ __mt7603_mcu_msg_send(struct mt7603_dev *dev, struct sk_buff *skb,
 		seq = ++mdev->mcu.msg_seq & 0xf;
 
 	txd = (struct mt7603_mcu_txd *)skb_push(skb, hdrlen);
-	memset(txd, 0, hdrlen);
 
 	txd->len = cpu_to_le16(skb->len);
 	if (cmd == -MCU_CMD_FW_SCATTER)

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

@@ -62,7 +62,6 @@ void mt7615_mcu_fill_msg(struct mt7615_dev *dev, struct sk_buff *skb,
 		seq = ++dev->mt76.mcu.msg_seq & 0xf;
 
 	mcu_txd = (struct mt7615_mcu_txd *)skb_push(skb, sizeof(*mcu_txd));
-	memset(mcu_txd, 0, sizeof(*mcu_txd));
 
 	if (cmd != -MCU_CMD_FW_SCATTER) {
 		q_idx = MT_TX_MCU_PORT_RX_Q0;