| Message ID | 20230925095532.1984344-32-u.kleine-koenig@pengutronix.de |
|---|---|
| State | New |
| Headers | show |
| Series | soc: Convert to platform remove callback returning void | expand |
On Mon, 25 Sep 2023 11:55:22 +0200, 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(). > > [...] Applied, thanks! [31/40] soc/samsung: exynos-chipid: Convert to platform remove callback returning void https://git.kernel.org/krzk/linux/c/0da7c05d232dc015ab421771bb71cdbfb46e0d67 Best regards,
diff --git a/drivers/soc/samsung/exynos-chipid.c b/drivers/soc/samsung/exynos-chipid.c index 7ba45c4aff97..3fd0f2b84dd3 100644 --- a/drivers/soc/samsung/exynos-chipid.c +++ b/drivers/soc/samsung/exynos-chipid.c @@ -158,13 +158,11 @@ static int exynos_chipid_probe(struct platform_device *pdev) return ret; } -static int exynos_chipid_remove(struct platform_device *pdev) +static void exynos_chipid_remove(struct platform_device *pdev) { struct soc_device *soc_dev = platform_get_drvdata(pdev); soc_device_unregister(soc_dev); - - return 0; } static const struct exynos_chipid_variant exynos4210_chipid_drv_data = { @@ -197,7 +195,7 @@ static struct platform_driver exynos_chipid_driver = { .of_match_table = exynos_chipid_of_device_ids, }, .probe = exynos_chipid_probe, - .remove = exynos_chipid_remove, + .remove_new = exynos_chipid_remove, }; module_platform_driver(exynos_chipid_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/soc/samsung/exynos-chipid.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)