From a0061b93c6e38024ba002f6a678401b9a66b3876 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 20 Oct 2023 09:55:50 +0200 Subject: [PATCH] crypto: n2_core - 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 Signed-off-by: Herbert Xu --- drivers/crypto/n2_core.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c index d5a32d71a3e97..caea98622c336 100644 --- a/drivers/crypto/n2_core.c +++ b/drivers/crypto/n2_core.c @@ -2011,7 +2011,7 @@ out_free_n2cp: return err; } -static int n2_crypto_remove(struct platform_device *dev) +static void n2_crypto_remove(struct platform_device *dev) { struct n2_crypto *np = dev_get_drvdata(&dev->dev); @@ -2022,8 +2022,6 @@ static int n2_crypto_remove(struct platform_device *dev) release_global_resources(); free_n2cp(np); - - return 0; } static struct n2_mau *alloc_ncp(void) @@ -2109,7 +2107,7 @@ out_free_ncp: return err; } -static int n2_mau_remove(struct platform_device *dev) +static void n2_mau_remove(struct platform_device *dev) { struct n2_mau *mp = dev_get_drvdata(&dev->dev); @@ -2118,8 +2116,6 @@ static int n2_mau_remove(struct platform_device *dev) release_global_resources(); free_ncp(mp); - - return 0; } static const struct of_device_id n2_crypto_match[] = { @@ -2146,7 +2142,7 @@ static struct platform_driver n2_crypto_driver = { .of_match_table = n2_crypto_match, }, .probe = n2_crypto_probe, - .remove = n2_crypto_remove, + .remove_new = n2_crypto_remove, }; static const struct of_device_id n2_mau_match[] = { @@ -2173,7 +2169,7 @@ static struct platform_driver n2_mau_driver = { .of_match_table = n2_mau_match, }, .probe = n2_mau_probe, - .remove = n2_mau_remove, + .remove_new = n2_mau_remove, }; static struct platform_driver * const drivers[] = { -- 2.30.2