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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-09-17 15:09:47 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-11-01 12:28:35 +0100 |
| commit | 6061302092305a0584aacf0d82a9d5e66653884c (patch) | |
| tree | 82e9d76907780600e6825ab75fc6ee4cbdcdb850 /drivers/leds/leds-powernv.c | |
| parent | leds: simatic-ipc-leds-gpio: Convert to platform remove callback returning void (diff) | |
| download | linux-6061302092305a0584aacf0d82a9d5e66653884c.tar.xz linux-6061302092305a0584aacf0d82a9d5e66653884c.zip | |
leds: Convert all platform drivers to return 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().
All platform drivers below drivers/leds/ unconditionally return zero in
their remove callback and so can be converted trivially to the variant
returning void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230917130947.1122198-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds/leds-powernv.c')
| -rw-r--r-- | drivers/leds/leds-powernv.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/leds/leds-powernv.c b/drivers/leds/leds-powernv.c index 743e2cdd0891..4f01acb75727 100644 --- a/drivers/leds/leds-powernv.c +++ b/drivers/leds/leds-powernv.c @@ -309,7 +309,7 @@ out: } /* Platform driver remove */ -static int powernv_led_remove(struct platform_device *pdev) +static void powernv_led_remove(struct platform_device *pdev) { struct powernv_led_common *powernv_led_common; @@ -321,7 +321,6 @@ static int powernv_led_remove(struct platform_device *pdev) mutex_destroy(&powernv_led_common->lock); dev_info(&pdev->dev, "PowerNV led module unregistered\n"); - return 0; } /* Platform driver property match */ @@ -335,7 +334,7 @@ MODULE_DEVICE_TABLE(of, powernv_led_match); static struct platform_driver powernv_led_driver = { .probe = powernv_led_probe, - .remove = powernv_led_remove, + .remove_new = powernv_led_remove, .driver = { .name = "powernv-led-driver", .of_match_table = powernv_led_match, |