[11/27] platform/chrome/wilco_ec: debugfs: Convert to platform remove callback returning void

Commit Message

Uwe Kleine-König Sept. 27, 2023, 8:10 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 <[e-mail]>
---
 drivers/platform/chrome/wilco_ec/debugfs.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/platform/chrome/wilco_ec/debugfs.c b/drivers/platform/chrome/wilco_ec/debugfs.c
index 7a13f13b16cd..93c11f81ca45 100644
--- a/drivers/platform/chrome/wilco_ec/debugfs.c
+++ b/drivers/platform/chrome/wilco_ec/debugfs.c
@@ -260,11 +260,9 @@  static int wilco_ec_debugfs_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int wilco_ec_debugfs_remove(struct platform_device *pdev)
+static void wilco_ec_debugfs_remove(struct platform_device *pdev)
 {
 	debugfs_remove_recursive(debug_info->dir);
-
-	return 0;
 }
 
 static struct platform_driver wilco_ec_debugfs_driver = {
@@ -272,7 +270,7 @@  static struct platform_driver wilco_ec_debugfs_driver = {
 		.name = DRV_NAME,
 	},
 	.probe = wilco_ec_debugfs_probe,
-	.remove = wilco_ec_debugfs_remove,
+	.remove_new = wilco_ec_debugfs_remove,
 };
 
 module_platform_driver(wilco_ec_debugfs_driver);