[openwrt/openwrt] ramips: use more devm in mtk_eth_soc

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/ba24b94e0b84840d6396d57672e1a33032ebe146

commit ba24b94e0b84840d6396d57672e1a33032ebe146
Author: Rosen Penev <rosenp at gmail.com>
AuthorDate: Wed Aug 14 17:50:20 2024 -0700

    ramips: use more devm in mtk_eth_soc
    
    These got added to the kernel after this driver was written.
    
    Signed-off-by: Rosen Penev <rosenp at gmail.com>
    Link: https://github.com/openwrt/openwrt/pull/16415
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 .../drivers/net/ethernet/ralink/mtk_eth_soc.c      | 49 +++++++---------------
 1 file changed, 15 insertions(+), 34 deletions(-)

diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c
index c7e074aaa5..893198d826 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c
@@ -1522,7 +1522,6 @@ static void fe_pending_work(struct work_struct *work)
 
 static int fe_probe(struct platform_device *pdev)
 {
-	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	const struct of_device_id *match;
 	struct fe_soc_data *soc;
 	struct net_device *netdev;
@@ -1542,17 +1541,14 @@ static int fe_probe(struct platform_device *pdev)
 	else
 		soc->reg_table = fe_reg_table;
 
-	fe_base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(fe_base)) {
-		err = -EADDRNOTAVAIL;
-		goto err_out;
-	}
+	fe_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(fe_base))
+		return PTR_ERR(fe_base);
 
-	netdev = alloc_etherdev(sizeof(*priv));
+	netdev = devm_alloc_etherdev_mqs(&pdev->dev, sizeof(*priv), 4, 4);
 	if (!netdev) {
 		dev_err(&pdev->dev, "alloc_etherdev failed\n");
-		err = -ENOMEM;
-		goto err_iounmap;
+		return -ENOMEM;
 	}
 
 	SET_NETDEV_DEV(netdev, &pdev->dev);
@@ -1562,16 +1558,15 @@ static int fe_probe(struct platform_device *pdev)
 	netdev->irq = platform_get_irq(pdev, 0);
 	if (netdev->irq < 0) {
 		dev_err(&pdev->dev, "no IRQ resource found\n");
-		err = -ENXIO;
-		goto err_free_dev;
+		return -ENXIO;
 	}
 
 	priv = netdev_priv(netdev);
 	spin_lock_init(&priv->page_lock);
-	priv->resets = devm_reset_control_array_get_exclusive(&pdev->dev);
+	priv->resets = devm_reset_control_array_get_optional_exclusive(&pdev->dev);
 	if (IS_ERR(priv->resets)) {
 		dev_err(&pdev->dev, "Failed to get resets for FE and ESW cores: %pe\n", priv->resets);
-		priv->resets = NULL;
+		return PTR_ERR(priv->resets);
 	}
 
 	if (soc->init_data)
@@ -1589,11 +1584,9 @@ static int fe_probe(struct platform_device *pdev)
 		netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 
 	if (fe_reg_table[FE_REG_FE_COUNTER_BASE]) {
-		priv->hw_stats = kzalloc(sizeof(*priv->hw_stats), GFP_KERNEL);
-		if (!priv->hw_stats) {
-			err = -ENOMEM;
-			goto err_free_dev;
-		}
+		priv->hw_stats = devm_kzalloc(&pdev->dev, sizeof(*priv->hw_stats), GFP_KERNEL);
+		if (!priv->hw_stats)
+			return -ENOMEM;
 		spin_lock_init(&priv->hw_stats->stats_lock);
 		u64_stats_init(&priv->hw_stats->syncp);
 	}
@@ -1603,15 +1596,13 @@ static int fe_probe(struct platform_device *pdev)
 		priv->sysclk = clk_get_rate(sysclk);
 	} else if ((priv->flags & FE_FLAG_CALIBRATE_CLK)) {
 		dev_err(&pdev->dev, "this soc needs a clk for calibration\n");
-		err = -ENXIO;
-		goto err_free_dev;
+		return -ENXIO;
 	}
 
 	priv->switch_np = of_parse_phandle(pdev->dev.of_node, "mediatek,switch", 0);
 	if ((priv->flags & FE_FLAG_HAS_SWITCH) && !priv->switch_np) {
 		dev_err(&pdev->dev, "failed to read switch phandle\n");
-		err = -ENODEV;
-		goto err_free_dev;
+		return -ENODEV;
 	}
 
 	priv->netdev = netdev;
@@ -1633,10 +1624,10 @@ static int fe_probe(struct platform_device *pdev)
 	netif_napi_add_weight(netdev, &priv->rx_napi, fe_poll, napi_weight);
 	fe_set_ethtool_ops(netdev);
 
-	err = register_netdev(netdev);
+	err = devm_register_netdev(&pdev->dev, netdev);
 	if (err) {
 		dev_err(&pdev->dev, "error bringing up device\n");
-		goto err_free_dev;
+		return err;
 	}
 
 	platform_set_drvdata(pdev, netdev);
@@ -1645,13 +1636,6 @@ static int fe_probe(struct platform_device *pdev)
 		   netdev->base_addr, netdev->irq);
 
 	return 0;
-
-err_free_dev:
-	free_netdev(netdev);
-err_iounmap:
-	devm_iounmap(&pdev->dev, fe_base);
-err_out:
-	return err;
 }
 
 static int fe_remove(struct platform_device *pdev)
@@ -1660,12 +1644,9 @@ static int fe_remove(struct platform_device *pdev)
 	struct fe_priv *priv = netdev_priv(dev);
 
 	netif_napi_del(&priv->rx_napi);
-	kfree(priv->hw_stats);
 
 	cancel_work_sync(&priv->pending_work);
 
-	unregister_netdev(dev);
-	free_netdev(dev);
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;