net: ethernet: ibm: 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/ibm/ehea/ehea_main.c

@@ -90,7 +90,7 @@ static struct ehea_bcmc_reg_array ehea_bcmc_regs;
 
 static int ehea_probe_adapter(struct platform_device *dev);
 
-static int ehea_remove(struct platform_device *dev);
+static void ehea_remove(struct platform_device *dev);
 
 static const struct of_device_id ehea_module_device_table[] = {
 	{
@@ -121,7 +121,7 @@ static struct platform_driver ehea_driver = {
 		.of_match_table = ehea_device_table,
 	},
 	.probe = ehea_probe_adapter,
-	.remove = ehea_remove,
+	.remove_new = ehea_remove,
 };
 
 void ehea_dump(void *adr, int len, char *msg)
@@ -3471,7 +3471,7 @@ static int ehea_probe_adapter(struct platform_device *dev)
 	return ret;
 }
 
-static int ehea_remove(struct platform_device *dev)
+static void ehea_remove(struct platform_device *dev)
 {
 	struct ehea_adapter *adapter = platform_get_drvdata(dev);
 	int i;
@@ -3492,8 +3492,6 @@ static int ehea_remove(struct platform_device *dev)
 	list_del(&adapter->list);
 
 	ehea_update_firmware_handles();
-
-	return 0;
 }
 
 static int check_module_parm(void)

drivers/net/ethernet/ibm/emac/core.c

@@ -3253,7 +3253,7 @@ static int emac_probe(struct platform_device *ofdev)
 	return err;
 }
 
-static int emac_remove(struct platform_device *ofdev)
+static void emac_remove(struct platform_device *ofdev)
 {
 	struct emac_instance *dev = platform_get_drvdata(ofdev);
 
@@ -3290,8 +3290,6 @@ static int emac_remove(struct platform_device *ofdev)
 		irq_dispose_mapping(dev->emac_irq);
 
 	free_netdev(dev->ndev);
-
-	return 0;
 }
 
 /* XXX Features in here should be replaced by properties... */
@@ -3319,7 +3317,7 @@ static struct platform_driver emac_driver = {
 		.of_match_table = emac_match,
 	},
 	.probe = emac_probe,
-	.remove = emac_remove,
+	.remove_new = emac_remove,
 };
 
 static void __init emac_make_bootlist(void)

drivers/net/ethernet/ibm/emac/mal.c

@@ -711,7 +711,7 @@ static int mal_probe(struct platform_device *ofdev)
 	return err;
 }
 
-static int mal_remove(struct platform_device *ofdev)
+static void mal_remove(struct platform_device *ofdev)
 {
 	struct mal_instance *mal = platform_get_drvdata(ofdev);
 
@@ -740,8 +740,6 @@ static int mal_remove(struct platform_device *ofdev)
 			   NUM_RX_BUFF * mal->num_rx_chans), mal->bd_virt,
 			  mal->bd_dma);
 	kfree(mal);
-
-	return 0;
 }
 
 static const struct of_device_id mal_platform_match[] =
@@ -770,7 +768,7 @@ static struct platform_driver mal_of_driver = {
 		.of_match_table = mal_platform_match,
 	},
 	.probe = mal_probe,
-	.remove = mal_remove,
+	.remove_new = mal_remove,
 };
 
 int __init mal_init(void)

drivers/net/ethernet/ibm/emac/rgmii.c

@@ -273,7 +273,7 @@ static int rgmii_probe(struct platform_device *ofdev)
 	return rc;
 }
 
-static int rgmii_remove(struct platform_device *ofdev)
+static void rgmii_remove(struct platform_device *ofdev)
 {
 	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
 
@@ -281,8 +281,6 @@ static int rgmii_remove(struct platform_device *ofdev)
 
 	iounmap(dev->base);
 	kfree(dev);
-
-	return 0;
 }
 
 static const struct of_device_id rgmii_match[] =
@@ -302,7 +300,7 @@ static struct platform_driver rgmii_driver = {
 		.of_match_table = rgmii_match,
 	},
 	.probe = rgmii_probe,
-	.remove = rgmii_remove,
+	.remove_new = rgmii_remove,
 };
 
 int __init rgmii_init(void)

drivers/net/ethernet/ibm/emac/tah.c

@@ -130,7 +130,7 @@ static int tah_probe(struct platform_device *ofdev)
 	return rc;
 }
 
-static int tah_remove(struct platform_device *ofdev)
+static void tah_remove(struct platform_device *ofdev)
 {
 	struct tah_instance *dev = platform_get_drvdata(ofdev);
 
@@ -138,8 +138,6 @@ static int tah_remove(struct platform_device *ofdev)
 
 	iounmap(dev->base);
 	kfree(dev);
-
-	return 0;
 }
 
 static const struct of_device_id tah_match[] =
@@ -160,7 +158,7 @@ static struct platform_driver tah_driver = {
 		.of_match_table = tah_match,
 	},
 	.probe = tah_probe,
-	.remove = tah_remove,
+	.remove_new = tah_remove,
 };
 
 int __init tah_init(void)

drivers/net/ethernet/ibm/emac/zmii.c

@@ -278,7 +278,7 @@ static int zmii_probe(struct platform_device *ofdev)
 	return rc;
 }
 
-static int zmii_remove(struct platform_device *ofdev)
+static void zmii_remove(struct platform_device *ofdev)
 {
 	struct zmii_instance *dev = platform_get_drvdata(ofdev);
 
@@ -286,8 +286,6 @@ static int zmii_remove(struct platform_device *ofdev)
 
 	iounmap(dev->base);
 	kfree(dev);
-
-	return 0;
 }
 
 static const struct of_device_id zmii_match[] =
@@ -308,7 +306,7 @@ static struct platform_driver zmii_driver = {
 		.of_match_table = zmii_match,
 	},
 	.probe = zmii_probe,
-	.remove = zmii_remove,
+	.remove_new = zmii_remove,
 };
 
 int __init zmii_init(void)