| Message ID | 20231031222851.3126434-19-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | interconnect: Convert to platform remove callback returning void | expand |
On 31/10/2023 23:29, 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> > --- Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Konrad
diff --git a/drivers/interconnect/qcom/smd-rpm.c b/drivers/interconnect/qcom/smd-rpm.c index 16a145a3c914..3816bfb4e2f3 100644 --- a/drivers/interconnect/qcom/smd-rpm.c +++ b/drivers/interconnect/qcom/smd-rpm.c @@ -63,11 +63,9 @@ int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int ctx, u32 r } EXPORT_SYMBOL_GPL(qcom_icc_rpm_set_bus_rate); -static int qcom_icc_rpm_smd_remove(struct platform_device *pdev) +static void qcom_icc_rpm_smd_remove(struct platform_device *pdev) { icc_smd_rpm = NULL; - - return 0; } static int qcom_icc_rpm_smd_probe(struct platform_device *pdev) @@ -87,7 +85,7 @@ static struct platform_driver qcom_interconnect_rpm_smd_driver = { .name = "icc_smd_rpm", }, .probe = qcom_icc_rpm_smd_probe, - .remove = qcom_icc_rpm_smd_remove, + .remove_new = qcom_icc_rpm_smd_remove, }; module_platform_driver(qcom_interconnect_rpm_smd_driver); MODULE_AUTHOR("Georgi Djakov <georgi.djakov@linaro.org>");
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/interconnect/qcom/smd-rpm.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)