media: ti: j721e-csi2rx: 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/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 54aba055c96bc7518b85913557b1dfac22df4e41..6da83d0cffaaedb41a0190485bd389a0f2228448 100644 (file)
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -1142,7 +1142,7 @@ err_mutex:
        return ret;
 }
 
-static int ti_csi2rx_remove(struct platform_device *pdev)
+static void ti_csi2rx_remove(struct platform_device *pdev)
 {
        struct ti_csi2rx_dev *csi = platform_get_drvdata(pdev);
 
@@ -1154,8 +1154,6 @@ static int ti_csi2rx_remove(struct platform_device *pdev)
        ti_csi2rx_cleanup_dma(csi);
 
        mutex_destroy(&csi->mutex);
-
-       return 0;
 }
 
 static const struct of_device_id ti_csi2rx_of_match[] = {
@@ -1166,7 +1164,7 @@ MODULE_DEVICE_TABLE(of, ti_csi2rx_of_match);
 
 static struct platform_driver ti_csi2rx_pdrv = {
        .probe = ti_csi2rx_probe,
-       .remove = ti_csi2rx_remove,
+       .remove_new = ti_csi2rx_remove,
        .driver = {
                .name = TI_CSI2RX_MODULE_NAME,
                .of_match_table = ti_csi2rx_of_match,