On Thu, May 18, 2023, Uwe Kleine-König 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@xxxxxxxxxxxxxx>
> ---
> drivers/usb/dwc3/dwc3-of-simple.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
> index 71fd620c5161..7e6ad8fe61a5 100644
> --- a/drivers/usb/dwc3/dwc3-of-simple.c
> +++ b/drivers/usb/dwc3/dwc3-of-simple.c
> @@ -112,13 +112,11 @@ static void __dwc3_of_simple_teardown(struct dwc3_of_simple *simple)
> pm_runtime_set_suspended(simple->dev);
> }
>
> -static int dwc3_of_simple_remove(struct platform_device *pdev)
> +static void dwc3_of_simple_remove(struct platform_device *pdev)
> {
> struct dwc3_of_simple *simple = platform_get_drvdata(pdev);
>
> __dwc3_of_simple_teardown(simple);
> -
> - return 0;
> }
>
> static void dwc3_of_simple_shutdown(struct platform_device *pdev)
> @@ -183,7 +181,7 @@ MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);
>
> static struct platform_driver dwc3_of_simple_driver = {
> .probe = dwc3_of_simple_probe,
> - .remove = dwc3_of_simple_remove,
> + .remove_new = dwc3_of_simple_remove,
> .shutdown = dwc3_of_simple_shutdown,
> .driver = {
> .name = "dwc3-of-simple",
> --
> 2.39.2
>
Acked-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Thanks,
Thinh
