net: stmmac: dwmac-meson8b: use devm_stmmac_probe_config_dt()

Simplify the driver's probe() function by using the devres
variant of stmmac_probe_config_dt().

The remove_new() callback now needs to be switched to
stmmac_pltfr_remove_no_dt().
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c

@@ -400,33 +400,27 @@ static int meson8b_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+	plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
 	if (IS_ERR(plat_dat))
 		return PTR_ERR(plat_dat);
 
 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
-	if (!dwmac) {
-		ret = -ENOMEM;
-		goto err_remove_config_dt;
-	}
+	if (!dwmac)
+		return -ENOMEM;
 
 	dwmac->data = (const struct meson8b_dwmac_data *)
 		of_device_get_match_data(&pdev->dev);
-	if (!dwmac->data) {
-		ret = -EINVAL;
-		goto err_remove_config_dt;
-	}
+	if (!dwmac->data)
+		return -EINVAL;
 	dwmac->regs = devm_platform_ioremap_resource(pdev, 1);
-	if (IS_ERR(dwmac->regs)) {
-		ret = PTR_ERR(dwmac->regs);
-		goto err_remove_config_dt;
-	}
+	if (IS_ERR(dwmac->regs))
+		return PTR_ERR(dwmac->regs);
 
 	dwmac->dev = &pdev->dev;
 	ret = of_get_phy_mode(pdev->dev.of_node, &dwmac->phy_mode);
 	if (ret) {
 		dev_err(&pdev->dev, "missing phy-mode property\n");
-		goto err_remove_config_dt;
+		return ret;
 	}
 
 	/* use 2ns as fallback since this value was previously hardcoded */
@@ -448,53 +442,40 @@ static int meson8b_dwmac_probe(struct platform_device *pdev)
 		if (dwmac->rx_delay_ps > 3000 || dwmac->rx_delay_ps % 200) {
 			dev_err(dwmac->dev,
 				"The RGMII RX delay range is 0..3000ps in 200ps steps");
-			ret = -EINVAL;
-			goto err_remove_config_dt;
+			return -EINVAL;
 		}
 	} else {
 		if (dwmac->rx_delay_ps != 0 && dwmac->rx_delay_ps != 2000) {
 			dev_err(dwmac->dev,
 				"The only allowed RGMII RX delays values are: 0ps, 2000ps");
-			ret = -EINVAL;
-			goto err_remove_config_dt;
+			return -EINVAL;
 		}
 	}
 
 	dwmac->timing_adj_clk = devm_clk_get_optional(dwmac->dev,
 						      "timing-adjustment");
-	if (IS_ERR(dwmac->timing_adj_clk)) {
-		ret = PTR_ERR(dwmac->timing_adj_clk);
-		goto err_remove_config_dt;
-	}
+	if (IS_ERR(dwmac->timing_adj_clk))
+		return PTR_ERR(dwmac->timing_adj_clk);
 
 	ret = meson8b_init_rgmii_delays(dwmac);
 	if (ret)
-		goto err_remove_config_dt;
+		return ret;
 
 	ret = meson8b_init_rgmii_tx_clk(dwmac);
 	if (ret)
-		goto err_remove_config_dt;
+		return ret;
 
 	ret = dwmac->data->set_phy_mode(dwmac);
 	if (ret)
-		goto err_remove_config_dt;
+		return ret;
 
 	ret = meson8b_init_prg_eth(dwmac);
 	if (ret)
-		goto err_remove_config_dt;
+		return ret;
 
 	plat_dat->bsp_priv = dwmac;
 
-	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
-	if (ret)
-		goto err_remove_config_dt;
-
-	return 0;
-
-err_remove_config_dt:
-	stmmac_remove_config_dt(pdev, plat_dat);
-
-	return ret;
+	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 }
 
 static const struct meson8b_dwmac_data meson8b_dwmac_data = {
@@ -539,7 +520,7 @@ MODULE_DEVICE_TABLE(of, meson8b_dwmac_match);
 
 static struct platform_driver meson8b_dwmac_driver = {
 	.probe  = meson8b_dwmac_probe,
-	.remove_new = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove_no_dt,
 	.driver = {
 		.name           = "meson8b-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,