Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/net/ethernet/moxa/Kconfig b/drivers/net/ethernet/moxa/Kconfig
index 5b531da..1a7cacb 100644
--- a/drivers/net/ethernet/moxa/Kconfig
+++ b/drivers/net/ethernet/moxa/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # MOXART device configuration
 #
diff --git a/drivers/net/ethernet/moxa/Makefile b/drivers/net/ethernet/moxa/Makefile
index aa3c73e..864e179 100644
--- a/drivers/net/ethernet/moxa/Makefile
+++ b/drivers/net/ethernet/moxa/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Makefile for the MOXART network device drivers.
 #
diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index b34055a..e165175 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -81,11 +81,13 @@
 				 priv->rx_buf_size, DMA_FROM_DEVICE);
 
 	if (priv->tx_desc_base)
-		dma_free_coherent(NULL, TX_REG_DESC_SIZE * TX_DESC_NUM,
+		dma_free_coherent(&priv->pdev->dev,
+				  TX_REG_DESC_SIZE * TX_DESC_NUM,
 				  priv->tx_desc_base, priv->tx_base);
 
 	if (priv->rx_desc_base)
-		dma_free_coherent(NULL, RX_REG_DESC_SIZE * RX_DESC_NUM,
+		dma_free_coherent(&priv->pdev->dev,
+				  RX_REG_DESC_SIZE * RX_DESC_NUM,
 				  priv->rx_desc_base, priv->rx_base);
 
 	kfree(priv->tx_buf_base);
@@ -298,7 +300,7 @@
 		ndev->stats.tx_packets++;
 		ndev->stats.tx_bytes += priv->tx_skb[tx_tail]->len;
 
-		dev_kfree_skb_irq(priv->tx_skb[tx_tail]);
+		dev_consume_skb_irq(priv->tx_skb[tx_tail]);
 		priv->tx_skb[tx_tail] = NULL;
 
 		tx_tail = TX_NEXT(tx_tail);
@@ -476,6 +478,7 @@
 
 	priv = netdev_priv(ndev);
 	priv->ndev = ndev;
+	priv->pdev = pdev;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ndev->base_addr = res->start;
@@ -491,7 +494,7 @@
 	priv->tx_buf_size = TX_BUF_SIZE;
 	priv->rx_buf_size = RX_BUF_SIZE;
 
-	priv->tx_desc_base = dma_alloc_coherent(NULL, TX_REG_DESC_SIZE *
+	priv->tx_desc_base = dma_alloc_coherent(&pdev->dev, TX_REG_DESC_SIZE *
 						TX_DESC_NUM, &priv->tx_base,
 						GFP_DMA | GFP_KERNEL);
 	if (!priv->tx_desc_base) {
@@ -499,7 +502,7 @@
 		goto init_fail;
 	}
 
-	priv->rx_desc_base = dma_alloc_coherent(NULL, RX_REG_DESC_SIZE *
+	priv->rx_desc_base = dma_alloc_coherent(&pdev->dev, RX_REG_DESC_SIZE *
 						RX_DESC_NUM, &priv->rx_base,
 						GFP_DMA | GFP_KERNEL);
 	if (!priv->rx_desc_base) {
diff --git a/drivers/net/ethernet/moxa/moxart_ether.h b/drivers/net/ethernet/moxa/moxart_ether.h
index bee608b..bf4c302 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.h
+++ b/drivers/net/ethernet/moxa/moxart_ether.h
@@ -292,6 +292,7 @@
 #define LINK_STATUS		0x4
 
 struct moxart_mac_priv_t {
+	struct platform_device *pdev;
 	void __iomem *base;
 	unsigned int reg_maccr;
 	unsigned int reg_imr;