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[7/7] net: ethernet: ezchip: Convert to platform remove callback returning void

Message ID 20231117091655.872426-8-u.kleine-koenig@pengutronix.de (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series net: ethernet: Convert to platform remove callback | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1127 this patch: 1127
netdev/cc_maintainers warning 4 maintainers not CCed: edumazet@google.com kuba@kernel.org quic_jjohnson@quicinc.com pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 1154 this patch: 1154
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1154 this patch: 1154
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 24 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Uwe Kleine-König Nov. 17, 2023, 9:17 a.m. UTC
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() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/net/ethernet/ezchip/nps_enet.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/ezchip/nps_enet.c b/drivers/net/ethernet/ezchip/nps_enet.c
index 4d7184d46824..07c2b701b5fa 100644
--- a/drivers/net/ethernet/ezchip/nps_enet.c
+++ b/drivers/net/ethernet/ezchip/nps_enet.c
@@ -633,7 +633,7 @@  static s32 nps_enet_probe(struct platform_device *pdev)
 	return err;
 }
 
-static s32 nps_enet_remove(struct platform_device *pdev)
+static void nps_enet_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct nps_enet_priv *priv = netdev_priv(ndev);
@@ -641,8 +641,6 @@  static s32 nps_enet_remove(struct platform_device *pdev)
 	unregister_netdev(ndev);
 	netif_napi_del(&priv->napi);
 	free_netdev(ndev);
-
-	return 0;
 }
 
 static const struct of_device_id nps_enet_dt_ids[] = {
@@ -653,7 +651,7 @@  MODULE_DEVICE_TABLE(of, nps_enet_dt_ids);
 
 static struct platform_driver nps_enet_driver = {
 	.probe = nps_enet_probe,
-	.remove = nps_enet_remove,
+	.remove_new = nps_enet_remove,
 	.driver = {
 		.name = DRV_NAME,
 		.of_match_table  = nps_enet_dt_ids,