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 (mostly) ignored
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.
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Cc: Uwe Kleine-König <[email protected]>
Signed-off-by: Yangtao Li <[email protected]>
---
drivers/thermal/armada_thermal.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
index 9f6dc4fc9112..94783e374d37 100644
--- a/drivers/thermal/armada_thermal.c
+++ b/drivers/thermal/armada_thermal.c
@@ -964,19 +964,17 @@ static int armada_thermal_probe(struct platform_device *pdev)
return 0;
}
-static int armada_thermal_exit(struct platform_device *pdev)
+static void armada_thermal_exit(struct platform_device *pdev)
{
struct armada_drvdata *drvdata = platform_get_drvdata(pdev);
if (drvdata->type == LEGACY)
thermal_zone_device_unregister(drvdata->data.tz);
-
- return 0;
}
static struct platform_driver armada_thermal_driver = {
.probe = armada_thermal_probe,
- .remove = armada_thermal_exit,
+ .remove_new = armada_thermal_exit,
.driver = {
.name = "armada_thermal",
.of_match_table = armada_thermal_id_table,
--
2.39.0
Hi Yangtao,
[email protected] wrote on Wed, 12 Jul 2023 16:12:33 +0800:
> 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 (mostly) ignored
> 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.
>
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
>
> Cc: Uwe Kleine-König <[email protected]>
> Signed-off-by: Yangtao Li <[email protected]>
Acked-by: Miquel Raynal <[email protected]>
> ---
> drivers/thermal/armada_thermal.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
> index 9f6dc4fc9112..94783e374d37 100644
> --- a/drivers/thermal/armada_thermal.c
> +++ b/drivers/thermal/armada_thermal.c
> @@ -964,19 +964,17 @@ static int armada_thermal_probe(struct platform_device *pdev)
> return 0;
> }
>
> -static int armada_thermal_exit(struct platform_device *pdev)
> +static void armada_thermal_exit(struct platform_device *pdev)
> {
> struct armada_drvdata *drvdata = platform_get_drvdata(pdev);
>
> if (drvdata->type == LEGACY)
> thermal_zone_device_unregister(drvdata->data.tz);
> -
> - return 0;
> }
>
> static struct platform_driver armada_thermal_driver = {
> .probe = armada_thermal_probe,
> - .remove = armada_thermal_exit,
> + .remove_new = armada_thermal_exit,
> .driver = {
> .name = "armada_thermal",
> .of_match_table = armada_thermal_id_table,
Thanks,
Miquèl
On Wed, Jul 12, 2023 at 04:12:33PM +0800, Yangtao Li 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 (mostly) ignored
> 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.
>
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
>
> Cc: Uwe Kleine-K?nig <[email protected]>
> Signed-off-by: Yangtao Li <[email protected]>
Reviewed-by: Uwe Kleine-K?nig <[email protected]>
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-K?nig |
Industrial Linux Solutions | https://www.pengutronix.de/ |