net: axienet: Use devm_* calls

use devm_* calls

Signed-off-by: Srikanth Thokala <sthokal@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/xilinx/xilinx_axienet_main.c

@@ -1499,6 +1499,7 @@ static int axienet_of_probe(struct platform_device *pdev)
 	struct axienet_local *lp;
 	struct net_device *ndev;
 	const void *addr;
+	struct resource *ethres, dmares;
 
 	ndev = alloc_etherdev(sizeof(*lp));
 	if (!ndev)
@@ -1517,12 +1518,14 @@ static int axienet_of_probe(struct platform_device *pdev)
 	lp->dev = &pdev->dev;
 	lp->options = XAE_OPTION_DEFAULTS;
 	/* Map device registers */
-	lp->regs = of_iomap(pdev->dev.of_node, 0);
+	ethres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	lp->regs = devm_ioremap_resource(&pdev->dev, ethres);
 	if (!lp->regs) {
 		dev_err(&pdev->dev, "could not map Axi Ethernet regs.\n");
 		ret = -ENOMEM;
-		goto nodev;
+		goto free_netdev;
 	}
+
 	/* Setup checksum offload, but default to off if not specified */
 	lp->features = 0;
 
@@ -1580,61 +1583,61 @@ static int axienet_of_probe(struct platform_device *pdev)
 
 	/* Find the DMA node, map the DMA registers, and decode the DMA IRQs */
 	np = of_parse_phandle(pdev->dev.of_node, "axistream-connected", 0);
-	if (!np) {
+	if (IS_ERR(np)) {
 		dev_err(&pdev->dev, "could not find DMA node\n");
-		ret = -ENODEV;
-		goto err_iounmap;
+		ret = PTR_ERR(np);
+		goto free_netdev;
 	}
-	lp->dma_regs = of_iomap(np, 0);
-	if (lp->dma_regs) {
-		dev_dbg(&pdev->dev, "MEM base: %p\n", lp->dma_regs);
-	} else {
-		dev_err(&pdev->dev, "unable to map DMA registers\n");
-		of_node_put(np);
+	ret = of_address_to_resource(np, 0, &dmares);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to get DMA resource\n");
+		goto free_netdev;
+	}
+	lp->dma_regs = devm_ioremap_resource(&pdev->dev, &dmares);
+	if (!lp->dma_regs) {
+		dev_err(&pdev->dev, "could not map DMA regs\n");
+		ret = -ENOMEM;
+		goto free_netdev;
 	}
 	lp->rx_irq = irq_of_parse_and_map(np, 1);
 	lp->tx_irq = irq_of_parse_and_map(np, 0);
 	of_node_put(np);
 	if ((lp->rx_irq <= 0) || (lp->tx_irq <= 0)) {
 		dev_err(&pdev->dev, "could not determine irqs\n");
 		ret = -ENOMEM;
-		goto err_iounmap_2;
+		goto free_netdev;
 	}
 
 	/* Retrieve the MAC address */
 	addr = of_get_property(pdev->dev.of_node, "local-mac-address", &size);
 	if ((!addr) || (size != 6)) {
 		dev_err(&pdev->dev, "could not find MAC address\n");
 		ret = -ENODEV;
-		goto err_iounmap_2;
+		goto free_netdev;
 	}
 	axienet_set_mac_address(ndev, (void *) addr);
 
 	lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD;
 	lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD;
 
 	lp->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
-	if (lp->phy_node)
+	if (lp->phy_node) {
 		ret = axienet_mdio_setup(lp, pdev->dev.of_node);
-	if (ret)
-		dev_warn(&pdev->dev, "error registering MDIO bus\n");
+		if (ret)
+			dev_warn(&pdev->dev, "error registering MDIO bus\n");
+	}
 
 	ret = register_netdev(lp->ndev);
 	if (ret) {
 		dev_err(lp->dev, "register_netdev() error (%i)\n", ret);
-		goto err_iounmap_2;
+		goto free_netdev;
 	}
 
 	return 0;
 
-err_iounmap_2:
-	if (lp->dma_regs)
-		iounmap(lp->dma_regs);
-err_iounmap:
-	iounmap(lp->regs);
-nodev:
+free_netdev:
 	free_netdev(ndev);
-	ndev = NULL;
+
 	return ret;
 }
 
@@ -1649,9 +1652,6 @@ static int axienet_of_remove(struct platform_device *pdev)
 	of_node_put(lp->phy_node);
 	lp->phy_node = NULL;
 
-	iounmap(lp->regs);
-	if (lp->dma_regs)
-		iounmap(lp->dma_regs);
 	free_netdev(ndev);
 
 	return 0;