dmaengine: sprd-dma: 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() is 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>
Link: https://lore.kernel.org/r/20230919133207.1400430-44-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index 168aa0bd73a0dd3b7f8224c9c5768945e15b9902..97e3dedb6c12b47589694940935d03f08961af5a 100644 (file)
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -1232,7 +1232,7 @@ err_rpm:
        return ret;
 }
 
-static int sprd_dma_remove(struct platform_device *pdev)
+static void sprd_dma_remove(struct platform_device *pdev)
 {
        struct sprd_dma_dev *sdev = platform_get_drvdata(pdev);
        struct sprd_dma_chn *c, *cn;
@@ -1255,7 +1255,6 @@ static int sprd_dma_remove(struct platform_device *pdev)
 
        pm_runtime_put_noidle(&pdev->dev);
        pm_runtime_disable(&pdev->dev);
-       return 0;
 }
 
 static const struct of_device_id sprd_dma_match[] = {
@@ -1292,7 +1291,7 @@ static const struct dev_pm_ops sprd_dma_pm_ops = {
 
 static struct platform_driver sprd_dma_driver = {
        .probe = sprd_dma_probe,
-       .remove = sprd_dma_remove,
+       .remove_new = sprd_dma_remove,
        .driver = {
                .name = "sprd-dma",
                .of_match_table = sprd_dma_match,