| Message ID | 20230403154014.2564054-12-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | staging: Convert to platform remove callback returning void | expand |
On Mo, 2023-04-03 at 17:40 +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 (mostly) ignored > 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. > > 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: Philipp Zabel <p.zabel@pengutronix.de> regards Philipp
diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c b/drivers/staging/media/imx/imx8mq-mipi-csi2.c index 83194328d010..4317f6b71892 100644 --- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c +++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c @@ -961,7 +961,7 @@ static int imx8mq_mipi_csi_probe(struct platform_device *pdev) return ret; } -static int imx8mq_mipi_csi_remove(struct platform_device *pdev) +static void imx8mq_mipi_csi_remove(struct platform_device *pdev) { struct v4l2_subdev *sd = platform_get_drvdata(pdev); struct csi_state *state = mipi_sd_to_csi2_state(sd); @@ -976,8 +976,6 @@ static int imx8mq_mipi_csi_remove(struct platform_device *pdev) mutex_destroy(&state->lock); pm_runtime_set_suspended(&pdev->dev); imx8mq_mipi_csi_release_icc(pdev); - - return 0; } static const struct of_device_id imx8mq_mipi_csi_of_match[] = { @@ -988,7 +986,7 @@ MODULE_DEVICE_TABLE(of, imx8mq_mipi_csi_of_match); static struct platform_driver imx8mq_mipi_csi_driver = { .probe = imx8mq_mipi_csi_probe, - .remove = imx8mq_mipi_csi_remove, + .remove_new = imx8mq_mipi_csi_remove, .driver = { .of_match_table = imx8mq_mipi_csi_of_match, .name = MIPI_CSI2_DRIVER_NAME,
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 (mostly) ignored 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. 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/staging/media/imx/imx8mq-mipi-csi2.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)