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hwrng: atmel - Convert to platform remove callback returning void

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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>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Uwe Kleine-König 2023-12-10 23:12:16 +01:00 committed by Herbert Xu
parent e4db80d80c
commit 30a7821f12
1 changed files with 2 additions and 4 deletions
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6
drivers/char/hw_random/atmel-rng.c
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@ -161,15 +161,13 @@ static int atmel_trng_probe(struct platform_device *pdev)
return ret;
}
static int atmel_trng_remove(struct platform_device *pdev)
static void atmel_trng_remove(struct platform_device *pdev)
{
struct atmel_trng *trng = platform_get_drvdata(pdev);
atmel_trng_cleanup(trng);
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
return 0;
}
static int __maybe_unused atmel_trng_runtime_suspend(struct device *dev)
@ -218,7 +216,7 @@ MODULE_DEVICE_TABLE(of, atmel_trng_dt_ids);
static struct platform_driver atmel_trng_driver = {
.probe = atmel_trng_probe,
.remove = atmel_trng_remove,
.remove_new = atmel_trng_remove,
.driver = {
.name = "atmel-trng",
.pm = pm_ptr(&atmel_trng_pm_ops),