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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-09-18 10:59:44 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2023-10-27 07:27:24 -0700 |
| commit | b875359995fad1ca20ed198e7969e2d1d308c202 (patch) | |
| tree | ef877ab30718e37402c345c07ab8f1d1f4d50383 /drivers/hwmon/ultra45_env.c | |
| parent | 39797753fdc208ea5771acbcf338a1649086afa9 (diff) | |
| download | lwn-b875359995fad1ca20ed198e7969e2d1d308c202.tar.gz lwn-b875359995fad1ca20ed198e7969e2d1d308c202.zip | |
hwmon: (ultra45_env) Convert to platform remove callback returning void
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>
Link: https://lore.kernel.org/r/20230918085951.1234172-18-u.kleine-koenig@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/ultra45_env.c')
| -rw-r--r-- | drivers/hwmon/ultra45_env.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/hwmon/ultra45_env.c b/drivers/hwmon/ultra45_env.c index 3b580f229887..9823afb0675a 100644 --- a/drivers/hwmon/ultra45_env.c +++ b/drivers/hwmon/ultra45_env.c @@ -291,7 +291,7 @@ out_iounmap: goto out; } -static int env_remove(struct platform_device *op) +static void env_remove(struct platform_device *op) { struct env *p = platform_get_drvdata(op); @@ -300,8 +300,6 @@ static int env_remove(struct platform_device *op) hwmon_device_unregister(p->hwmon_dev); of_iounmap(&op->resource[0], p->regs, REG_SIZE); } - - return 0; } static const struct of_device_id env_match[] = { @@ -319,7 +317,7 @@ static struct platform_driver env_driver = { .of_match_table = env_match, }, .probe = env_probe, - .remove = env_remove, + .remove_new = env_remove, }; module_platform_driver(env_driver); |