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[net-next,10/54] net: ethernet: atheros: Convert to platform remove callback returning void

Message ID 20230918204227.1316886-11-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Commit c6e817838902f554dedbf426377778ee56f006b2
Delegated to: Netdev Maintainers
Headers show
Series net: ethernet: Convert to platform remove callback returning void | expand

Checks

Context Check Description
netdev/series_format fail Series longer than 15 patches (and no cover letter)
netdev/tree_selection success Clearly marked for 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: 9 this patch: 9
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 9 this patch: 9
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: 9 this patch: 9
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 31 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Uwe Kleine-König Sept. 18, 2023, 8:41 p.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() is 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/atheros/ag71xx.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/atheros/ag71xx.c b/drivers/net/ethernet/atheros/ag71xx.c
index 009e0b3066fa..0f2f400b5bc4 100644
--- a/drivers/net/ethernet/atheros/ag71xx.c
+++ b/drivers/net/ethernet/atheros/ag71xx.c
@@ -1968,21 +1968,19 @@  static int ag71xx_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int ag71xx_remove(struct platform_device *pdev)
+static void ag71xx_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct ag71xx *ag;
 
 	if (!ndev)
-		return 0;
+		return;
 
 	ag = netdev_priv(ndev);
 	unregister_netdev(ndev);
 	ag71xx_mdio_remove(ag);
 	clk_disable_unprepare(ag->clk_eth);
 	platform_set_drvdata(pdev, NULL);
-
-	return 0;
 }
 
 static const u32 ar71xx_fifo_ar7100[] = {
@@ -2069,7 +2067,7 @@  static const struct of_device_id ag71xx_match[] = {
 
 static struct platform_driver ag71xx_driver = {
 	.probe		= ag71xx_probe,
-	.remove		= ag71xx_remove,
+	.remove_new	= ag71xx_remove,
 	.driver = {
 		.name	= "ag71xx",
 		.of_match_table = ag71xx_match,