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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/net/ethernet/qualcomm/qca_uart.c
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@@ -167,7 +167,7 @@
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 	schedule_work(&qca->tx_work);
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 }
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-static struct serdev_device_ops qca_serdev_ops = {
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+static const struct serdev_device_ops qca_serdev_ops = {
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 	.receive_buf = qca_tty_receive,
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 	.write_wakeup = qca_tty_wakeup,
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 };
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@@ -248,7 +248,7 @@
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 	return NETDEV_TX_OK;
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 }
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-static void qcauart_netdev_tx_timeout(struct net_device *dev)
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+static void qcauart_netdev_tx_timeout(struct net_device *dev, unsigned int txqueue)
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 {
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 	struct qcauart *qca = netdev_priv(dev);
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@@ -285,8 +285,7 @@
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 {
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 	struct qcauart *qca = netdev_priv(dev);
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-	if (qca->rx_skb)
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-		dev_kfree_skb(qca->rx_skb);
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+	dev_kfree_skb(qca->rx_skb);
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 }
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 static const struct net_device_ops qcauart_netdev_ops = {
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@@ -351,7 +350,7 @@
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 	mac = of_get_mac_address(serdev->dev.of_node);
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-	if (mac)
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+	if (!IS_ERR(mac))
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 		ether_addr_copy(qca->net_dev->dev_addr, mac);
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 	if (!is_valid_ether_addr(qca->net_dev->dev_addr)) {