net: ethernet: marvell: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() is renamed to .remove().

Trivially convert these drivers from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mv643xx_eth.c

@@ -2892,19 +2892,18 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int mv643xx_eth_shared_remove(struct platform_device *pdev)
+static void mv643xx_eth_shared_remove(struct platform_device *pdev)
 {
 	struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
 
 	mv643xx_eth_shared_of_remove();
 	if (!IS_ERR(msp->clk))
 		clk_disable_unprepare(msp->clk);
-	return 0;
 }
 
 static struct platform_driver mv643xx_eth_shared_driver = {
 	.probe		= mv643xx_eth_shared_probe,
-	.remove		= mv643xx_eth_shared_remove,
+	.remove_new	= mv643xx_eth_shared_remove,
 	.driver = {
 		.name	= MV643XX_ETH_SHARED_NAME,
 		.of_match_table = of_match_ptr(mv643xx_eth_shared_ids),
@@ -3279,7 +3278,7 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int mv643xx_eth_remove(struct platform_device *pdev)
+static void mv643xx_eth_remove(struct platform_device *pdev)
 {
 	struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
 	struct net_device *dev = mp->dev;
@@ -3293,8 +3292,6 @@ static int mv643xx_eth_remove(struct platform_device *pdev)
 		clk_disable_unprepare(mp->clk);
 
 	free_netdev(mp->dev);
-
-	return 0;
 }
 
 static void mv643xx_eth_shutdown(struct platform_device *pdev)
@@ -3311,7 +3308,7 @@ static void mv643xx_eth_shutdown(struct platform_device *pdev)
 
 static struct platform_driver mv643xx_eth_driver = {
 	.probe		= mv643xx_eth_probe,
-	.remove		= mv643xx_eth_remove,
+	.remove_new	= mv643xx_eth_remove,
 	.shutdown	= mv643xx_eth_shutdown,
 	.driver = {
 		.name	= MV643XX_ETH_NAME,

drivers/net/ethernet/marvell/mvmdio.c

@@ -388,7 +388,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int orion_mdio_remove(struct platform_device *pdev)
+static void orion_mdio_remove(struct platform_device *pdev)
 {
 	struct mii_bus *bus = platform_get_drvdata(pdev);
 	struct orion_mdio_dev *dev = bus->priv;
@@ -404,8 +404,6 @@ static int orion_mdio_remove(struct platform_device *pdev)
 		clk_disable_unprepare(dev->clk[i]);
 		clk_put(dev->clk[i]);
 	}
-
-	return 0;
 }
 
 static const struct of_device_id orion_mdio_match[] = {
@@ -426,7 +424,7 @@ MODULE_DEVICE_TABLE(acpi, orion_mdio_acpi_match);
 
 static struct platform_driver orion_mdio_driver = {
 	.probe = orion_mdio_probe,
-	.remove = orion_mdio_remove,
+	.remove_new = orion_mdio_remove,
 	.driver = {
 		.name = "orion-mdio",
 		.of_match_table = orion_mdio_match,

drivers/net/ethernet/marvell/mvneta.c

@@ -5725,7 +5725,7 @@ static int mvneta_probe(struct platform_device *pdev)
 }
 
 /* Device removal routine */
-static int mvneta_remove(struct platform_device *pdev)
+static void mvneta_remove(struct platform_device *pdev)
 {
 	struct net_device  *dev = platform_get_drvdata(pdev);
 	struct mvneta_port *pp = netdev_priv(dev);
@@ -5744,8 +5744,6 @@ static int mvneta_remove(struct platform_device *pdev)
 				       1 << pp->id);
 		mvneta_bm_put(pp->bm_priv);
 	}
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -5871,7 +5869,7 @@ MODULE_DEVICE_TABLE(of, mvneta_match);
 
 static struct platform_driver mvneta_driver = {
 	.probe = mvneta_probe,
-	.remove = mvneta_remove,
+	.remove_new = mvneta_remove,
 	.driver = {
 		.name = MVNETA_DRIVER_NAME,
 		.of_match_table = mvneta_match,

drivers/net/ethernet/marvell/mvneta_bm.c

@@ -457,7 +457,7 @@ static int mvneta_bm_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int mvneta_bm_remove(struct platform_device *pdev)
+static void mvneta_bm_remove(struct platform_device *pdev)
 {
 	struct mvneta_bm *priv = platform_get_drvdata(pdev);
 	u8 all_ports_map = 0xff;
@@ -475,8 +475,6 @@ static int mvneta_bm_remove(struct platform_device *pdev)
 	mvneta_bm_write(priv, MVNETA_BM_COMMAND_REG, MVNETA_BM_STOP_MASK);
 
 	clk_disable_unprepare(priv->clk);
-
-	return 0;
 }
 
 static const struct of_device_id mvneta_bm_match[] = {
@@ -487,7 +485,7 @@ MODULE_DEVICE_TABLE(of, mvneta_bm_match);
 
 static struct platform_driver mvneta_bm_driver = {
 	.probe = mvneta_bm_probe,
-	.remove = mvneta_bm_remove,
+	.remove_new = mvneta_bm_remove,
 	.driver = {
 		.name = MVNETA_BM_DRIVER_NAME,
 		.of_match_table = mvneta_bm_match,

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

@@ -7662,7 +7662,7 @@ static int mvpp2_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int mvpp2_remove(struct platform_device *pdev)
+static void mvpp2_remove(struct platform_device *pdev)
 {
 	struct mvpp2 *priv = platform_get_drvdata(pdev);
 	struct fwnode_handle *fwnode = pdev->dev.fwnode;
@@ -7700,15 +7700,13 @@ static int mvpp2_remove(struct platform_device *pdev)
 	}
 
 	if (is_acpi_node(port_fwnode))
-		return 0;
+		return;
 
 	clk_disable_unprepare(priv->axi_clk);
 	clk_disable_unprepare(priv->mg_core_clk);
 	clk_disable_unprepare(priv->mg_clk);
 	clk_disable_unprepare(priv->pp_clk);
 	clk_disable_unprepare(priv->gop_clk);
-
-	return 0;
 }
 
 static const struct of_device_id mvpp2_match[] = {
@@ -7734,7 +7732,7 @@ MODULE_DEVICE_TABLE(acpi, mvpp2_acpi_match);
 
 static struct platform_driver mvpp2_driver = {
 	.probe = mvpp2_probe,
-	.remove = mvpp2_remove,
+	.remove_new = mvpp2_remove,
 	.driver = {
 		.name = MVPP2_DRIVER_NAME,
 		.of_match_table = mvpp2_match,

drivers/net/ethernet/marvell/pxa168_eth.c

@@ -1528,7 +1528,7 @@ static int pxa168_eth_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int pxa168_eth_remove(struct platform_device *pdev)
+static void pxa168_eth_remove(struct platform_device *pdev)
 {
 	struct net_device *dev = platform_get_drvdata(pdev);
 	struct pxa168_eth_private *pep = netdev_priv(dev);
@@ -1547,7 +1547,6 @@ static int pxa168_eth_remove(struct platform_device *pdev)
 	mdiobus_free(pep->smi_bus);
 	unregister_netdev(dev);
 	free_netdev(dev);
-	return 0;
 }
 
 static void pxa168_eth_shutdown(struct platform_device *pdev)
@@ -1580,7 +1579,7 @@ MODULE_DEVICE_TABLE(of, pxa168_eth_of_match);
 
 static struct platform_driver pxa168_eth_driver = {
 	.probe = pxa168_eth_probe,
-	.remove = pxa168_eth_remove,
+	.remove_new = pxa168_eth_remove,
 	.shutdown = pxa168_eth_shutdown,
 	.resume = pxa168_eth_resume,
 	.suspend = pxa168_eth_suspend,