diff mbox series

[02/12] hwrng: cctrng - Convert to platform remove callback returning void

Message ID 12bbad702295f61973f7748202d974c1ce0a1ffd.1702245873.git.u.kleine-koenig@pengutronix.de
State Accepted
Commit 0e00c5266fcf7d9e497fcf4ef9985f7cc56a8eb8
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/cctrng.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/char/hw_random/cctrng.c b/drivers/char/hw_random/cctrng.c
index 1abbff04a015..c0d2f824769f 100644
--- a/drivers/char/hw_random/cctrng.c
+++ b/drivers/char/hw_random/cctrng.c
@@ -560,7 +560,7 @@  static int cctrng_probe(struct platform_device *pdev)
 	return rc;
 }
 
-static int cctrng_remove(struct platform_device *pdev)
+static void cctrng_remove(struct platform_device *pdev)
 {
 	struct cctrng_drvdata *drvdata = platform_get_drvdata(pdev);
 	struct device *dev = &pdev->dev;
@@ -570,8 +570,6 @@  static int cctrng_remove(struct platform_device *pdev)
 	cc_trng_pm_fini(drvdata);
 
 	dev_info(dev, "ARM cctrng device terminated\n");
-
-	return 0;
 }
 
 static int __maybe_unused cctrng_suspend(struct device *dev)
@@ -654,7 +652,7 @@  static struct platform_driver cctrng_driver = {
 		.pm = &cctrng_pm,
 	},
 	.probe = cctrng_probe,
-	.remove = cctrng_remove,
+	.remove_new = cctrng_remove,
 };
 
 module_platform_driver(cctrng_driver);