| Message ID | 20230927193736.2236447-3-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Mainlined, archived |
| Headers | show |
| Series | thermal: Convert to platform remove callback returning void | expand |
Hi Uwe, u.kleine-koenig@pengutronix.de wrote on Wed, 27 Sep 2023 21:37:07 +0200: > 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: Miquel Raynal <miquel.raynal@bootlin.com> Thanks, Miquèl
diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c index f00765bfc22e..f783547ef964 100644 --- a/drivers/thermal/armada_thermal.c +++ b/drivers/thermal/armada_thermal.c @@ -965,19 +965,17 @@ 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,
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/thermal/armada_thermal.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)