| Message ID | 20240307180359.190008-2-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | soundwire: qcom: Convert to platform remove callback returning void | expand |
On Thu, 07 Mar 2024 19:03:59 +0100, 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(). > > [...] Applied, thanks! [1/1] soundwire: qcom: Convert to platform remove callback returning void commit: fe12bec586332f3f84feea6dddad15d40889034a Best regards,
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index 3c4d6debab1f..fb70afe64fcc 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -1636,14 +1636,12 @@ static int qcom_swrm_probe(struct platform_device *pdev) return ret; } -static int qcom_swrm_remove(struct platform_device *pdev) +static void qcom_swrm_remove(struct platform_device *pdev) { struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(&pdev->dev); sdw_bus_master_delete(&ctrl->bus); clk_disable_unprepare(ctrl->hclk); - - return 0; } static int __maybe_unused swrm_runtime_resume(struct device *dev) @@ -1769,7 +1767,7 @@ MODULE_DEVICE_TABLE(of, qcom_swrm_of_match); static struct platform_driver qcom_swrm_driver = { .probe = &qcom_swrm_probe, - .remove = &qcom_swrm_remove, + .remove_new = qcom_swrm_remove, .driver = { .name = "qcom-soundwire", .of_match_table = qcom_swrm_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/soundwire/qcom.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) base-commit: 11afac187274a6177a7ac82997f8691c0f469e41