From ae08f87afff708ad5414f29eab00fec2e9fa155e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 12 May 2023 23:27:19 +0200 Subject: can: rcar: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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() is renamed to .remove(). Trivially convert these drivers from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230512212725.143824-14-u.kleine-koenig@pengutronix.de Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rcar/rcar_can.c | 5 ++--- drivers/net/can/rcar/rcar_canfd.c | 6 ++---- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c index cc43c9c5e38c..f5aa5dbacaf2 100644 --- a/drivers/net/can/rcar/rcar_can.c +++ b/drivers/net/can/rcar/rcar_can.c @@ -824,7 +824,7 @@ fail: return err; } -static int rcar_can_remove(struct platform_device *pdev) +static void rcar_can_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); struct rcar_can_priv *priv = netdev_priv(ndev); @@ -832,7 +832,6 @@ static int rcar_can_remove(struct platform_device *pdev) unregister_candev(ndev); netif_napi_del(&priv->napi); free_candev(ndev); - return 0; } static int __maybe_unused rcar_can_suspend(struct device *dev) @@ -908,7 +907,7 @@ static struct platform_driver rcar_can_driver = { .pm = &rcar_can_pm_ops, }, .probe = rcar_can_probe, - .remove = rcar_can_remove, + .remove_new = rcar_can_remove, }; module_platform_driver(rcar_can_driver); diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index 963c42f43755..e4d748913439 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -2078,7 +2078,7 @@ fail_dev: return err; } -static int rcar_canfd_remove(struct platform_device *pdev) +static void rcar_canfd_remove(struct platform_device *pdev) { struct rcar_canfd_global *gpriv = platform_get_drvdata(pdev); u32 ch; @@ -2096,8 +2096,6 @@ static int rcar_canfd_remove(struct platform_device *pdev) clk_disable_unprepare(gpriv->clkp); reset_control_assert(gpriv->rstc1); reset_control_assert(gpriv->rstc2); - - return 0; } static int __maybe_unused rcar_canfd_suspend(struct device *dev) @@ -2130,7 +2128,7 @@ static struct platform_driver rcar_canfd_driver = { .pm = &rcar_canfd_pm_ops, }, .probe = rcar_canfd_probe, - .remove = rcar_canfd_remove, + .remove_new = rcar_canfd_remove, }; module_platform_driver(rcar_canfd_driver); -- cgit v1.2.3