media: stm32-dcmipp: Convert to platform remove callback returning void

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>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
index 32c6619be9a26426b3a1f4760be81cde73c8bafd..bce821eb71cec59041827616106a93abea92f94b 100644 (file)
--- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c
@@ -517,7 +517,7 @@ static int dcmipp_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int dcmipp_remove(struct platform_device *pdev)
+static void dcmipp_remove(struct platform_device *pdev)
 {
        struct dcmipp_device *dcmipp = platform_get_drvdata(pdev);
        unsigned int i;
@@ -534,8 +534,6 @@ static int dcmipp_remove(struct platform_device *pdev)
        media_device_cleanup(&dcmipp->mdev);
 
        v4l2_device_unregister(&dcmipp->v4l2_dev);
-
-       return 0;
 }
 
 static int dcmipp_runtime_suspend(struct device *dev)
@@ -588,7 +586,7 @@ static const struct dev_pm_ops dcmipp_pm_ops = {
 
 static struct platform_driver dcmipp_pdrv = {
        .probe          = dcmipp_probe,
-       .remove         = dcmipp_remove,
+       .remove_new     = dcmipp_remove,
        .driver         = {
                .name   = DCMIPP_PDEV_NAME,
                .of_match_table = dcmipp_of_match,