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

Message ID bc57ab04935fbe095bb8d57d429814f318b705c6.1702245873.git.u.kleine-koenig@pengutronix.de
State Accepted
Commit 9d7edaae7c1fbbc4d34124d41ac846a8b9ba5359
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/xgene-rng.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/char/hw_random/xgene-rng.c b/drivers/char/hw_random/xgene-rng.c
index 7382724bf501..642d13519464 100644
--- a/drivers/char/hw_random/xgene-rng.c
+++ b/drivers/char/hw_random/xgene-rng.c
@@ -357,15 +357,13 @@  static int xgene_rng_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int xgene_rng_remove(struct platform_device *pdev)
+static void xgene_rng_remove(struct platform_device *pdev)
 {
 	int rc;
 
 	rc = device_init_wakeup(&pdev->dev, 0);
 	if (rc)
 		dev_err(&pdev->dev, "RNG init wakeup failed error %d\n", rc);
-
-	return 0;
 }
 
 static const struct of_device_id xgene_rng_of_match[] = {
@@ -377,7 +375,7 @@  MODULE_DEVICE_TABLE(of, xgene_rng_of_match);
 
 static struct platform_driver xgene_rng_driver = {
 	.probe = xgene_rng_probe,
-	.remove	= xgene_rng_remove,
+	.remove_new = xgene_rng_remove,
 	.driver = {
 		.name		= "xgene-rng",
 		.of_match_table = xgene_rng_of_match,