diff mbox series

[net-next,1/5] ptp: ptp_clockmatrix: Convert to platform remove callback returning void

Message ID 0f0f5680c1a2a3ef19975935a2c6828a98bc4d25.1712734365.git.u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Commit 32080ec2db65c2e9c1ecfd79ec9629a1243d7ce5
Delegated to: Netdev Maintainers
Headers show
Series ptp: Convert to platform remove callback returning void | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
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: 942 this patch: 942
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 2 of 2 maintainers
netdev/build_clang success Errors and warnings before: 953 this patch: 953
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: 953 this patch: 953
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
netdev/contest success net-next-2024-04-12--06-00 (tests: 962)

Commit Message

Uwe Kleine-König April 10, 2024, 7:34 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/ptp/ptp_clockmatrix.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/ptp/ptp_clockmatrix.c b/drivers/ptp/ptp_clockmatrix.c
index f6f9d4adce04..209a45a76e6b 100644
--- a/drivers/ptp/ptp_clockmatrix.c
+++ b/drivers/ptp/ptp_clockmatrix.c
@@ -2457,15 +2457,13 @@  static int idtcm_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int idtcm_remove(struct platform_device *pdev)
+static void idtcm_remove(struct platform_device *pdev)
 {
 	struct idtcm *idtcm = platform_get_drvdata(pdev);
 
 	idtcm->extts_mask = 0;
 	ptp_clock_unregister_all(idtcm);
 	cancel_delayed_work_sync(&idtcm->extts_work);
-
-	return 0;
 }
 
 static struct platform_driver idtcm_driver = {
@@ -2473,7 +2471,7 @@  static struct platform_driver idtcm_driver = {
 		.name = "8a3400x-phc",
 	},
 	.probe = idtcm_probe,
-	.remove	= idtcm_remove,
+	.remove_new = idtcm_remove,
 };
 
 module_platform_driver(idtcm_driver);