dmaengine: tegra186-gpc-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/20230919133207.1400430-48-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c
index 33b10100110096f37b7a05f423d3a5b14539cb2f..868c18cc72b1ba8a8d6cb3e46e8389f6ffd39ac9 100644 (file)
--- a/drivers/dma/tegra186-gpc-dma.c
+++ b/drivers/dma/tegra186-gpc-dma.c
@@ -1473,14 +1473,12 @@ static int tegra_dma_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int tegra_dma_remove(struct platform_device *pdev)
+static void tegra_dma_remove(struct platform_device *pdev)
 {
        struct tegra_dma *tdma = platform_get_drvdata(pdev);
 
        of_dma_controller_free(pdev->dev.of_node);
        dma_async_device_unregister(&tdma->dma_dev);
-
-       return 0;
 }
 
 static int __maybe_unused tegra_dma_pm_suspend(struct device *dev)
@@ -1533,7 +1531,7 @@ static struct platform_driver tegra_dma_driver = {
                .of_match_table = tegra_dma_of_match,
        },
        .probe          = tegra_dma_probe,
-       .remove         = tegra_dma_remove,
+       .remove_new     = tegra_dma_remove,
 };
 
 module_platform_driver(tegra_dma_driver);