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hwrng: xgene - 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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Uwe Kleine-König 2023-12-10 23:12:27 +01:00 committed by Herbert Xu
parent b74bc79fff
commit 9d7edaae7c
1 changed files with 2 additions and 4 deletions
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6
drivers/char/hw_random/xgene-rng.c
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@ -357,15 +357,13 @@ static int xgene_rng_probe(struct platform_device *pdev)
return 0;
}
static int xgene_rng_remove(struct platform_device *pdev)
static void xgene_rng_remove(struct platform_device *pdev)
{
int rc;
rc = device_init_wakeup(&pdev->dev, 0);
if (rc)
dev_err(&pdev->dev, "RNG init wakeup failed error %d\n", rc);
return 0;
}
static const struct of_device_id xgene_rng_of_match[] = {
@ -377,7 +375,7 @@ MODULE_DEVICE_TABLE(of, xgene_rng_of_match);
static struct platform_driver xgene_rng_driver = {
.probe = xgene_rng_probe,
.remove = xgene_rng_remove,
.remove_new = xgene_rng_remove,
.driver = {
.name = "xgene-rng",
.of_match_table = xgene_rng_of_match,