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authorUwe Kleine-König2023-12-10 23:12:23 +0100
committerHerbert Xu2023-12-15 17:52:54 +0800
commite5906ee3643817f2c56e6f16e4b840b418f25a02 (patch)
tree08e2da4d473a136a49380a0debadc40a30bef521 /drivers/char
parent550b48d113b39612a5ee5324ab034d3f6ddb013d (diff)
hwrng: npcm - 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() 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>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/npcm-rng.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/char/hw_random/npcm-rng.c b/drivers/char/hw_random/npcm-rng.c
index 8a304b754217..bce8c4829a1f 100644
--- a/drivers/char/hw_random/npcm-rng.c
+++ b/drivers/char/hw_random/npcm-rng.c
@@ -126,15 +126,13 @@ static int npcm_rng_probe(struct platform_device *pdev)
return 0;
}
-static int npcm_rng_remove(struct platform_device *pdev)
+static void npcm_rng_remove(struct platform_device *pdev)
{
struct npcm_rng *priv = platform_get_drvdata(pdev);
devm_hwrng_unregister(&pdev->dev, &priv->rng);
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
-
- return 0;
}
#ifdef CONFIG_PM
@@ -178,7 +176,7 @@ static struct platform_driver npcm_rng_driver = {
.of_match_table = of_match_ptr(rng_dt_id),
},
.probe = npcm_rng_probe,
- .remove = npcm_rng_remove,
+ .remove_new = npcm_rng_remove,
};
module_platform_driver(npcm_rng_driver);