[11/12] hwrng: timeriomem - Convert to platform remove callback returning void

Commit Message

Uwe Kleine-König Dec. 10, 2023, 10:12 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() 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/char/hw_random/timeriomem-rng.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c
index 3db9d868efb1..65b8260339f5 100644
--- a/drivers/char/hw_random/timeriomem-rng.c
+++ b/drivers/char/hw_random/timeriomem-rng.c
@@ -174,13 +174,11 @@  static int timeriomem_rng_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int timeriomem_rng_remove(struct platform_device *pdev)
+static void timeriomem_rng_remove(struct platform_device *pdev)
 {
 	struct timeriomem_rng_private *priv = platform_get_drvdata(pdev);
 
 	hrtimer_cancel(&priv->timer);
-
-	return 0;
 }
 
 static const struct of_device_id timeriomem_rng_match[] = {
@@ -195,7 +193,7 @@  static struct platform_driver timeriomem_rng_driver = {
 		.of_match_table	= timeriomem_rng_match,
 	},
 	.probe		= timeriomem_rng_probe,
-	.remove		= timeriomem_rng_remove,
+	.remove_new	= timeriomem_rng_remove,
 };
 
 module_platform_driver(timeriomem_rng_driver);