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dmaengine: tegra20-apb-dma: Convert to platform remove callback returning void

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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/20230919133207.1400430-49-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Uwe Kleine-König 2023-09-19 15:31:56 +02:00 committed by Vinod Koul
parent d669b198ef
commit afd1ac2e1b
1 changed files with 2 additions and 4 deletions
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6
drivers/dma/tegra20-apb-dma.c
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@ -1581,7 +1581,7 @@ err_clk_unprepare:
return ret; return ret;
} }
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); struct tegra_dma *tdma = platform_get_drvdata(pdev);
@ -1589,8 +1589,6 @@ static int tegra_dma_remove(struct platform_device *pdev)
dma_async_device_unregister(&tdma->dma_dev); dma_async_device_unregister(&tdma->dma_dev);
pm_runtime_disable(&pdev->dev); pm_runtime_disable(&pdev->dev);
clk_unprepare(tdma->dma_clk); clk_unprepare(tdma->dma_clk);
return 0;
} }
static int __maybe_unused tegra_dma_runtime_suspend(struct device *dev) static int __maybe_unused tegra_dma_runtime_suspend(struct device *dev)
@ -1677,7 +1675,7 @@ static struct platform_driver tegra_dmac_driver = {
.of_match_table = tegra_dma_of_match, .of_match_table = tegra_dma_of_match,
}, },
.probe = tegra_dma_probe, .probe = tegra_dma_probe,
.remove = tegra_dma_remove, .remove_new = tegra_dma_remove,
}; };
module_platform_driver(tegra_dmac_driver); module_platform_driver(tegra_dmac_driver);