net: stmmac: Make stmmac_pltfr_remove() return void

The function returns zero unconditionally. Change it to return void instead
which simplifies some callers as error handing becomes unnecessary.

The function is also used for some drivers as remove callback. Switch these
to the .remove_new() callback. For some others no error can happen in the
remove callback now, convert them to .remove_new(), too.
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -141,7 +141,7 @@ MODULE_DEVICE_TABLE(of, anarion_dwmac_match);
 
 static struct platform_driver anarion_dwmac_driver = {
 	.probe  = anarion_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "anarion-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -87,7 +87,7 @@ MODULE_DEVICE_TABLE(of, dwmac_generic_match);
 
 static struct platform_driver dwmac_generic_driver = {
 	.probe  = dwmac_generic_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = STMMAC_RESOURCE_NAME,
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -376,7 +376,7 @@ MODULE_DEVICE_TABLE(of, imx_dwmac_match);
 
 static struct platform_driver imx_dwmac_driver = {
 	.probe  = imx_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "imx-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -386,7 +386,7 @@ MODULE_DEVICE_TABLE(of, ingenic_mac_of_matches);
 
 static struct platform_driver ingenic_mac_driver = {
 	.probe		= ingenic_mac_probe,
-	.remove		= stmmac_pltfr_remove,
+	.remove_new	= stmmac_pltfr_remove,
 	.driver		= {
 		.name	= "ingenic-mac",
 		.pm		= pm_ptr(&ingenic_mac_pm_ops),

drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c

@@ -169,20 +169,17 @@ static int intel_eth_plat_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int intel_eth_plat_remove(struct platform_device *pdev)
+static void intel_eth_plat_remove(struct platform_device *pdev)
 {
 	struct intel_dwmac *dwmac = get_stmmac_bsp_priv(&pdev->dev);
-	int ret;
 
-	ret = stmmac_pltfr_remove(pdev);
+	stmmac_pltfr_remove(pdev);
 	clk_disable_unprepare(dwmac->tx_clk);
-
-	return ret;
 }
 
 static struct platform_driver intel_eth_plat_driver = {
 	.probe  = intel_eth_plat_probe,
-	.remove = intel_eth_plat_remove,
+	.remove_new = intel_eth_plat_remove,
 	.driver = {
 		.name		= "intel-eth-plat",
 		.pm		= &stmmac_pltfr_pm_ops,

drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c

@@ -498,7 +498,7 @@ MODULE_DEVICE_TABLE(of, ipq806x_gmac_dwmac_match);
 
 static struct platform_driver ipq806x_gmac_dwmac_driver = {
 	.probe = ipq806x_gmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name		= "ipq806x-gmac-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c

@@ -83,7 +83,7 @@ MODULE_DEVICE_TABLE(of, lpc18xx_dwmac_match);
 
 static struct platform_driver lpc18xx_dwmac_driver = {
 	.probe  = lpc18xx_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "lpc18xx-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -678,15 +678,12 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int mediatek_dwmac_remove(struct platform_device *pdev)
+static void mediatek_dwmac_remove(struct platform_device *pdev)
 {
 	struct mediatek_dwmac_plat_data *priv_plat = get_stmmac_bsp_priv(&pdev->dev);
-	int ret;
 
-	ret = stmmac_pltfr_remove(pdev);
+	stmmac_pltfr_remove(pdev);
 	mediatek_dwmac_clks_config(priv_plat, false);
-
-	return ret;
 }
 
 static const struct of_device_id mediatek_dwmac_match[] = {
@@ -701,7 +698,7 @@ MODULE_DEVICE_TABLE(of, mediatek_dwmac_match);
 
 static struct platform_driver mediatek_dwmac_driver = {
 	.probe  = mediatek_dwmac_probe,
-	.remove = mediatek_dwmac_remove,
+	.remove_new = mediatek_dwmac_remove,
 	.driver = {
 		.name           = "dwmac-mediatek",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -91,7 +91,7 @@ MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
 
 static struct platform_driver meson6_dwmac_driver = {
 	.probe  = meson6_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "meson6-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -539,7 +539,7 @@ MODULE_DEVICE_TABLE(of, meson8b_dwmac_match);
 
 static struct platform_driver meson8b_dwmac_driver = {
 	.probe  = meson8b_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "meson8b-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -231,7 +231,7 @@ MODULE_DEVICE_TABLE(of, oxnas_dwmac_match);
 
 static struct platform_driver oxnas_dwmac_driver = {
 	.probe  = oxnas_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "oxnas-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c

@@ -668,16 +668,15 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 static int qcom_ethqos_remove(struct platform_device *pdev)
 {
 	struct qcom_ethqos *ethqos;
-	int ret;
 
 	ethqos = get_stmmac_bsp_priv(&pdev->dev);
 	if (!ethqos)
 		return -ENODEV;
 
-	ret = stmmac_pltfr_remove(pdev);
+	stmmac_pltfr_remove(pdev);
 	ethqos_clks_config(ethqos, false);
 
-	return ret;
+	return 0;
 }
 
 static const struct of_device_id qcom_ethqos_match[] = {

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

@@ -524,7 +524,7 @@ MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
 
 static struct platform_driver socfpga_dwmac_driver = {
 	.probe  = socfpga_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "socfpga-dwmac",
 		.pm		= &socfpga_dwmac_pm_ops,

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

@@ -156,7 +156,7 @@ MODULE_DEVICE_TABLE(of, starfive_dwmac_match);
 
 static struct platform_driver starfive_dwmac_driver = {
 	.probe  = starfive_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name = "starfive-dwmac",
 		.pm = &stmmac_pltfr_pm_ops,

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

@@ -179,7 +179,7 @@ MODULE_DEVICE_TABLE(of, sun7i_dwmac_match);
 
 static struct platform_driver sun7i_dwmac_driver = {
 	.probe  = sun7i_gmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove,
 	.driver = {
 		.name           = "sun7i-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,

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

@@ -265,9 +265,7 @@ static int visconti_eth_dwmac_remove(struct platform_device *pdev)
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	int err;
 
-	err = stmmac_pltfr_remove(pdev);
-	if (err < 0)
-		dev_err(&pdev->dev, "failed to remove platform: %d\n", err);
+	stmmac_pltfr_remove(pdev);
 
 	err = visconti_eth_clock_remove(pdev);
 	if (err < 0)

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

@@ -707,7 +707,7 @@ EXPORT_SYMBOL_GPL(stmmac_get_platform_resources);
  * Description: this function calls the main to free the net resources
  * and calls the platforms hook and release the resources (e.g. mem).
  */
-int stmmac_pltfr_remove(struct platform_device *pdev)
+void stmmac_pltfr_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
@@ -719,8 +719,6 @@ int stmmac_pltfr_remove(struct platform_device *pdev)
 		plat->exit(pdev, plat->bsp_priv);
 
 	stmmac_remove_config_dt(pdev, plat);
-
-	return 0;
 }
 EXPORT_SYMBOL_GPL(stmmac_pltfr_remove);
 

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h

@@ -19,7 +19,7 @@ void stmmac_remove_config_dt(struct platform_device *pdev,
 int stmmac_get_platform_resources(struct platform_device *pdev,
 				  struct stmmac_resources *stmmac_res);
 
-int stmmac_pltfr_remove(struct platform_device *pdev);
+void stmmac_pltfr_remove(struct platform_device *pdev);
 extern const struct dev_pm_ops stmmac_pltfr_pm_ops;
 
 static inline void *get_stmmac_bsp_priv(struct device *dev)