From b0d49b30ef64ac879b491080bf80ef7bcb293ef6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 20 Oct 2023 09:55:38 +0200 Subject: [PATCH] crypto: exynos-rng - Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Krzysztof Kozlowski Reviewed-by: Andi Shyti Signed-off-by: Herbert Xu --- drivers/crypto/exynos-rng.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/exynos-rng.c b/drivers/crypto/exynos-rng.c index 5d60a4bcb5118..0dd8baf16cb45 100644 --- a/drivers/crypto/exynos-rng.c +++ b/drivers/crypto/exynos-rng.c @@ -306,13 +306,11 @@ static int exynos_rng_probe(struct platform_device *pdev) return ret; } -static int exynos_rng_remove(struct platform_device *pdev) +static void exynos_rng_remove(struct platform_device *pdev) { crypto_unregister_rng(&exynos_rng_alg); exynos_rng_dev = NULL; - - return 0; } static int __maybe_unused exynos_rng_suspend(struct device *dev) @@ -391,7 +389,7 @@ static struct platform_driver exynos_rng_driver = { .of_match_table = exynos_rng_dt_match, }, .probe = exynos_rng_probe, - .remove = exynos_rng_remove, + .remove_new = exynos_rng_remove, }; module_platform_driver(exynos_rng_driver); -- 2.30.2