| Message ID | 20231117091655.872426-5-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: ethernet: Convert to platform remove callback | expand |
On 17/11/2023 11:17, 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() 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> Reviewed-by: Roger Quadros <rogerq@kernel.org>
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 960cb3fa0754..83730b566dff 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -2999,7 +2999,7 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev) return ret; } -static int am65_cpsw_nuss_remove(struct platform_device *pdev) +static void am65_cpsw_nuss_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct am65_cpsw_common *common; @@ -3030,7 +3030,6 @@ static int am65_cpsw_nuss_remove(struct platform_device *pdev) pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); - return 0; } static int am65_cpsw_nuss_suspend(struct device *dev) @@ -3130,7 +3129,7 @@ static struct platform_driver am65_cpsw_nuss_driver = { .pm = &am65_cpsw_nuss_dev_pm_ops, }, .probe = am65_cpsw_nuss_probe, - .remove = am65_cpsw_nuss_remove, + .remove_new = am65_cpsw_nuss_remove, }; module_platform_driver(am65_cpsw_nuss_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 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/net/ethernet/ti/am65-cpsw-nuss.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)