| Message ID | 20231020075521.2121571-79-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 20/10/2023 09:55, 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. > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c index fe8cf9ba8005..9c02046971e3 100644 --- a/drivers/crypto/s5p-sss.c +++ b/drivers/crypto/s5p-sss.c @@ -2315,7 +2315,7 @@ static int s5p_aes_probe(struct platform_device *pdev) return err; } -static int s5p_aes_remove(struct platform_device *pdev) +static void s5p_aes_remove(struct platform_device *pdev) { struct s5p_aes_dev *pdata = platform_get_drvdata(pdev); int i; @@ -2337,13 +2337,11 @@ static int s5p_aes_remove(struct platform_device *pdev) clk_disable_unprepare(pdata->clk); s5p_dev = NULL; - - return 0; } static struct platform_driver s5p_aes_crypto = { .probe = s5p_aes_probe, - .remove = s5p_aes_remove, + .remove_new = s5p_aes_remove, .driver = { .name = "s5p-secss", .of_match_table = s5p_sss_dt_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/s5p-sss.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)