| Message ID | 20231020075521.2121571-55-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Herbert Xu |
| Headers | show |
| Series | crypto: Convert to platform remove callback returning void | expand |
On Fri, Oct 20, 2023 at 09:55:33AM +0200, Uwe Kleine-König wrote: > 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: Jesper Nilsson <jesper.nilsson@axis.com> /^JN - Jesper Nilsson
diff --git a/drivers/crypto/axis/artpec6_crypto.c b/drivers/crypto/axis/artpec6_crypto.c index 8493a45e1bd4..07996b6c3446 100644 --- a/drivers/crypto/axis/artpec6_crypto.c +++ b/drivers/crypto/axis/artpec6_crypto.c @@ -2957,7 +2957,7 @@ static int artpec6_crypto_probe(struct platform_device *pdev) return err; } -static int artpec6_crypto_remove(struct platform_device *pdev) +static void artpec6_crypto_remove(struct platform_device *pdev) { struct artpec6_crypto *ac = platform_get_drvdata(pdev); int irq = platform_get_irq(pdev, 0); @@ -2977,12 +2977,11 @@ static int artpec6_crypto_remove(struct platform_device *pdev) #ifdef CONFIG_DEBUG_FS artpec6_crypto_free_debugfs(); #endif - return 0; } static struct platform_driver artpec6_crypto_driver = { .probe = artpec6_crypto_probe, - .remove = artpec6_crypto_remove, + .remove_new = artpec6_crypto_remove, .driver = { .name = "artpec6-crypto", .of_match_table = artpec6_crypto_of_match,
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> --- drivers/crypto/axis/artpec6_crypto.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)