On Thu, May 18, 2023 at 1:02 AM 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 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 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> Looks good Acked-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
diff --git a/drivers/usb/fotg210/fotg210-core.c b/drivers/usb/fotg210/fotg210-core.c index cb75464ab290..958fc40eae86 100644 --- a/drivers/usb/fotg210/fotg210-core.c +++ b/drivers/usb/fotg210/fotg210-core.c @@ -165,7 +165,7 @@ static int fotg210_probe(struct platform_device *pdev) return ret; } -static int fotg210_remove(struct platform_device *pdev) +static void fotg210_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; enum usb_dr_mode mode; @@ -176,8 +176,6 @@ static int fotg210_remove(struct platform_device *pdev) fotg210_udc_remove(pdev); else fotg210_hcd_remove(pdev); - - return 0; } #ifdef CONFIG_OF @@ -196,7 +194,7 @@ static struct platform_driver fotg210_driver = { .of_match_table = of_match_ptr(fotg210_of_match), }, .probe = fotg210_probe, - .remove = fotg210_remove, + .remove_new = fotg210_remove, }; static int __init fotg210_init(void)
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 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/usb/fotg210/fotg210-core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)