On Wed, Mar 15, 2023 at 4:08 PM Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote: > 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 (mostly) ignored > 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. > > 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> Acked-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
diff --git a/sound/soc/ux500/mop500.c b/sound/soc/ux500/mop500.c index 325e75e96136..e0ab4534fe3e 100644 --- a/sound/soc/ux500/mop500.c +++ b/sound/soc/ux500/mop500.c @@ -134,7 +134,7 @@ static int mop500_probe(struct platform_device *pdev) return ret; } -static int mop500_remove(struct platform_device *pdev) +static void mop500_remove(struct platform_device *pdev) { struct snd_soc_card *card = platform_get_drvdata(pdev); @@ -143,8 +143,6 @@ static int mop500_remove(struct platform_device *pdev) snd_soc_unregister_card(card); mop500_ab8500_remove(card); mop500_of_node_put(); - - return 0; } static const struct of_device_id snd_soc_mop500_match[] = { @@ -159,7 +157,7 @@ static struct platform_driver snd_soc_mop500_driver = { .of_match_table = snd_soc_mop500_match, }, .probe = mop500_probe, - .remove = mop500_remove, + .remove_new = mop500_remove, }; module_platform_driver(snd_soc_mop500_driver);
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 (mostly) ignored 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. 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> --- sound/soc/ux500/mop500.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)