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[05/12] hwrng: ks-sa - Convert to platform remove callback returning void

Message ID 159e2800fe1412090a33884f4a8b9cae24b3d28f.1702245873.git.u.kleine-koenig@pengutronix.de
State Accepted
Commit 724989b8301728963e9e374a5d5186bfa5d43973
Headers show
Series hwrng: Convert to platform remove callback returning | expand

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 <u.kleine-koenig@pengutronix.de>
---
 drivers/char/hw_random/ks-sa-rng.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/char/hw_random/ks-sa-rng.c b/drivers/char/hw_random/ks-sa-rng.c
index dff7b9db7044..36c34252b4f6 100644
--- a/drivers/char/hw_random/ks-sa-rng.c
+++ b/drivers/char/hw_random/ks-sa-rng.c
@@ -241,12 +241,10 @@  static int ks_sa_rng_probe(struct platform_device *pdev)
 	return devm_hwrng_register(&pdev->dev, &ks_sa_rng->rng);
 }
 
-static int ks_sa_rng_remove(struct platform_device *pdev)
+static void ks_sa_rng_remove(struct platform_device *pdev)
 {
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-
-	return 0;
 }
 
 static const struct of_device_id ks_sa_rng_dt_match[] = {
@@ -263,7 +261,7 @@  static struct platform_driver ks_sa_rng_driver = {
 		.of_match_table = ks_sa_rng_dt_match,
 	},
 	.probe		= ks_sa_rng_probe,
-	.remove		= ks_sa_rng_remove,
+	.remove_new	= ks_sa_rng_remove,
 };
 
 module_platform_driver(ks_sa_rng_driver);