| Message ID | 20230925095532.1984344-31-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | soc: Convert to platform remove callback returning void | expand |
Am Montag, 25. September 2023, 11:55:21 CEST schrieb Uwe Kleine-König: > 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 <u.kleine-koenig@pengutronix.de> applied for 6.7 Thanks Heiko
diff --git a/drivers/soc/rockchip/io-domain.c b/drivers/soc/rockchip/io-domain.c index 6619256c2d11..18f809c160a7 100644 --- a/drivers/soc/rockchip/io-domain.c +++ b/drivers/soc/rockchip/io-domain.c @@ -687,7 +687,7 @@ static int rockchip_iodomain_probe(struct platform_device *pdev) return ret; } -static int rockchip_iodomain_remove(struct platform_device *pdev) +static void rockchip_iodomain_remove(struct platform_device *pdev) { struct rockchip_iodomain *iod = platform_get_drvdata(pdev); int i; @@ -699,13 +699,11 @@ static int rockchip_iodomain_remove(struct platform_device *pdev) regulator_unregister_notifier(io_supply->reg, &io_supply->nb); } - - return 0; } static struct platform_driver rockchip_iodomain_driver = { .probe = rockchip_iodomain_probe, - .remove = rockchip_iodomain_remove, + .remove_new = rockchip_iodomain_remove, .driver = { .name = "rockchip-iodomain", .of_match_table = rockchip_iodomain_match,
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 <u.kleine-koenig@pengutronix.de> --- drivers/soc/rockchip/io-domain.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)