| Message ID | 20230731091636.693193-13-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | ata: Convert to platform remove callback returning void | expand |
On 7/31/23 12:16 PM, 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@pengutronix.de> Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru> [...] MBR, Sergey
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c index 34790f15c1b8..1a0752255959 100644 --- a/drivers/ata/sata_rcar.c +++ b/drivers/ata/sata_rcar.c @@ -914,7 +914,7 @@ static int sata_rcar_probe(struct platform_device *pdev) return ret; } -static int sata_rcar_remove(struct platform_device *pdev) +static void sata_rcar_remove(struct platform_device *pdev) { struct ata_host *host = platform_get_drvdata(pdev); struct sata_rcar_priv *priv = host->private_data; @@ -930,8 +930,6 @@ static int sata_rcar_remove(struct platform_device *pdev) pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -1016,7 +1014,7 @@ static const struct dev_pm_ops sata_rcar_pm_ops = { static struct platform_driver sata_rcar_driver = { .probe = sata_rcar_probe, - .remove = sata_rcar_remove, + .remove_new = sata_rcar_remove, .driver = { .name = DRV_NAME, .of_match_table = sata_rcar_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() 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/ata/sata_rcar.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)