| Message ID | 20230925095532.1984344-20-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | d85a9d18a58156fc8b5ab185e00e078adaaeefde |
| Headers | show |
| Series | soc: Convert to platform remove callback returning void | expand |
On 25.09.2023 11:55, 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. > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > --- Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org> Konrad
diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c index feb21637ac20..2a71548d2dc9 100644 --- a/drivers/soc/qcom/llcc-qcom.c +++ b/drivers/soc/qcom/llcc-qcom.c @@ -1080,11 +1080,10 @@ static int qcom_llcc_get_cfg_index(struct platform_device *pdev, u8 *cfg_index, return ret; } -static int qcom_llcc_remove(struct platform_device *pdev) +static void qcom_llcc_remove(struct platform_device *pdev) { /* Set the global pointer to a error code to avoid referencing it */ drv_data = ERR_PTR(-ENODEV); - return 0; } static struct regmap *qcom_llcc_init_mmio(struct platform_device *pdev, u8 index, @@ -1257,7 +1256,7 @@ static struct platform_driver qcom_llcc_driver = { .of_match_table = qcom_llcc_of_match, }, .probe = qcom_llcc_probe, - .remove = qcom_llcc_remove, + .remove_new = qcom_llcc_remove, }; module_platform_driver(qcom_llcc_driver);
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/soc/qcom/llcc-qcom.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)