Merge branch 'net-convert-to-platform-remove-callback-returning-void'

Uwe Kleine-König says:

====================
net*: Convert to platform remove callback returning void

(implicit) v1 of this series can be found at
https://lore.kernel.org/netdev/20231117095922.876489-1-u.kleine-koenig@pengutronix.de.

Changes since then:

 - Dropped patch #1 as Alex objected. Patch #1 (was #2 before) now
   converts ipa to remove_new() and introduces an error message in the
   error path that failed before.
====================

Link: https://lore.kernel.org/r/cover.1701713943.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/fjes/fjes_main.c

@@ -1438,7 +1438,7 @@ static int fjes_probe(struct platform_device *plat_dev)
 }
 
 /* fjes_remove - Device Removal Routine */
-static int fjes_remove(struct platform_device *plat_dev)
+static void fjes_remove(struct platform_device *plat_dev)
 {
 	struct net_device *netdev = dev_get_drvdata(&plat_dev->dev);
 	struct fjes_adapter *adapter = netdev_priv(netdev);
@@ -1462,16 +1462,14 @@ static int fjes_remove(struct platform_device *plat_dev)
 	netif_napi_del(&adapter->napi);
 
 	free_netdev(netdev);
-
-	return 0;
 }
 
 static struct platform_driver fjes_driver = {
 	.driver = {
 		.name = DRV_NAME,
 	},
 	.probe = fjes_probe,
-	.remove = fjes_remove,
+	.remove_new = fjes_remove,
 };
 
 static acpi_status

drivers/net/ipa/ipa_main.c

@@ -943,7 +943,7 @@ static int ipa_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int ipa_remove(struct platform_device *pdev)
+static void ipa_remove(struct platform_device *pdev)
 {
 	struct ipa *ipa = dev_get_drvdata(&pdev->dev);
 	struct ipa_power *power = ipa->power;
@@ -966,8 +966,16 @@ static int ipa_remove(struct platform_device *pdev)
 			usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
 			ret = ipa_modem_stop(ipa);
 		}
-		if (ret)
-			return ret;
+		if (ret) {
+			/*
+			 * Not cleaning up here properly might also yield a
+			 * crash later on. As the device is still unregistered
+			 * in this case, this might even yield a crash later on.
+			 */
+			dev_err(dev, "Failed to stop modem (%pe), leaking resources\n",
+				ERR_PTR(ret));
+			return;
+		}
 
 		ipa_teardown(ipa);
 	}
@@ -985,17 +993,6 @@ static int ipa_remove(struct platform_device *pdev)
 	ipa_power_exit(power);
 
 	dev_info(dev, "IPA driver removed");
-
-	return 0;
-}
-
-static void ipa_shutdown(struct platform_device *pdev)
-{
-	int ret;
-
-	ret = ipa_remove(pdev);
-	if (ret)
-		dev_err(&pdev->dev, "shutdown: remove returned %d\n", ret);
 }
 
 static const struct attribute_group *ipa_attribute_groups[] = {
@@ -1008,8 +1005,8 @@ static const struct attribute_group *ipa_attribute_groups[] = {
 
 static struct platform_driver ipa_driver = {
 	.probe		= ipa_probe,
-	.remove		= ipa_remove,
-	.shutdown	= ipa_shutdown,
+	.remove_new	= ipa_remove,
+	.shutdown	= ipa_remove,
 	.driver	= {
 		.name		= "ipa",
 		.pm		= &ipa_pm_ops,

drivers/net/pcs/pcs-rzn1-miic.c

@@ -505,11 +505,9 @@ static int miic_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int miic_remove(struct platform_device *pdev)
+static void miic_remove(struct platform_device *pdev)
 {
 	pm_runtime_put(&pdev->dev);
-
-	return 0;
 }
 
 static const struct of_device_id miic_of_mtable[] = {
@@ -525,7 +523,7 @@ static struct platform_driver miic_driver = {
 		.of_match_table = miic_of_mtable,
 	},
 	.probe = miic_probe,
-	.remove = miic_remove,
+	.remove_new = miic_remove,
 };
 module_platform_driver(miic_driver);
 

drivers/net/phy/sfp.c

@@ -3097,7 +3097,7 @@ static int sfp_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int sfp_remove(struct platform_device *pdev)
+static void sfp_remove(struct platform_device *pdev)
 {
 	struct sfp *sfp = platform_get_drvdata(pdev);
 
@@ -3107,8 +3107,6 @@ static int sfp_remove(struct platform_device *pdev)
 	rtnl_lock();
 	sfp_sm_event(sfp, SFP_E_REMOVE);
 	rtnl_unlock();
-
-	return 0;
 }
 
 static void sfp_shutdown(struct platform_device *pdev)
@@ -3129,7 +3127,7 @@ static void sfp_shutdown(struct platform_device *pdev)
 
 static struct platform_driver sfp_driver = {
 	.probe = sfp_probe,
-	.remove = sfp_remove,
+	.remove_new = sfp_remove,
 	.shutdown = sfp_shutdown,
 	.driver = {
 		.name = "sfp",

drivers/net/wan/fsl_ucc_hdlc.c

@@ -1259,7 +1259,7 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int ucc_hdlc_remove(struct platform_device *pdev)
+static void ucc_hdlc_remove(struct platform_device *pdev)
 {
 	struct ucc_hdlc_private *priv = dev_get_drvdata(&pdev->dev);
 
@@ -1277,8 +1277,6 @@ static int ucc_hdlc_remove(struct platform_device *pdev)
 	kfree(priv);
 
 	dev_info(&pdev->dev, "UCC based hdlc module removed\n");
-
-	return 0;
 }
 
 static const struct of_device_id fsl_ucc_hdlc_of_match[] = {
@@ -1292,7 +1290,7 @@ MODULE_DEVICE_TABLE(of, fsl_ucc_hdlc_of_match);
 
 static struct platform_driver ucc_hdlc_driver = {
 	.probe	= ucc_hdlc_probe,
-	.remove	= ucc_hdlc_remove,
+	.remove_new = ucc_hdlc_remove,
 	.driver	= {
 		.name		= DRV_NAME,
 		.pm		= HDLC_PM_OPS,

drivers/net/wan/ixp4xx_hss.c

@@ -1522,20 +1522,19 @@ static int ixp4xx_hss_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int ixp4xx_hss_remove(struct platform_device *pdev)
+static void ixp4xx_hss_remove(struct platform_device *pdev)
 {
 	struct port *port = platform_get_drvdata(pdev);
 
 	unregister_hdlc_device(port->netdev);
 	free_netdev(port->netdev);
 	npe_release(port->npe);
-	return 0;
 }
 
 static struct platform_driver ixp4xx_hss_driver = {
 	.driver.name	= DRV_NAME,
 	.probe		= ixp4xx_hss_probe,
-	.remove		= ixp4xx_hss_remove,
+	.remove_new	= ixp4xx_hss_remove,
 };
 module_platform_driver(ixp4xx_hss_driver);
 

drivers/net/wwan/qcom_bam_dmux.c

@@ -846,7 +846,7 @@ static int bam_dmux_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int bam_dmux_remove(struct platform_device *pdev)
+static void bam_dmux_remove(struct platform_device *pdev)
 {
 	struct bam_dmux *dmux = platform_get_drvdata(pdev);
 	struct device *dev = dmux->dev;
@@ -877,8 +877,6 @@ static int bam_dmux_remove(struct platform_device *pdev)
 	disable_irq(dmux->pc_irq);
 	bam_dmux_power_off(dmux);
 	bam_dmux_free_skbs(dmux->tx_skbs, DMA_TO_DEVICE);
-
-	return 0;
 }
 
 static const struct dev_pm_ops bam_dmux_pm_ops = {
@@ -893,7 +891,7 @@ MODULE_DEVICE_TABLE(of, bam_dmux_of_match);
 
 static struct platform_driver bam_dmux_driver = {
 	.probe = bam_dmux_probe,
-	.remove = bam_dmux_remove,
+	.remove_new = bam_dmux_remove,
 	.driver = {
 		.name = "bam-dmux",
 		.pm = &bam_dmux_pm_ops,