| Message ID | 20230321084125.337021-8-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | iommu: Convert to platform remove callback returning void | expand |
Il 21/03/23 09:41, Uwe Kleine-König ha scritto: > 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 (mostly) ignored > 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. > > 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> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d5a4955910ff..bcc7ccdb2d6e 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1316,7 +1316,7 @@ static int mtk_iommu_probe(struct platform_device *pdev) return ret; } -static int mtk_iommu_remove(struct platform_device *pdev) +static void mtk_iommu_remove(struct platform_device *pdev) { struct mtk_iommu_data *data = platform_get_drvdata(pdev); struct mtk_iommu_bank_data *bank; @@ -1338,7 +1338,6 @@ static int mtk_iommu_remove(struct platform_device *pdev) continue; devm_free_irq(&pdev->dev, bank->irq, bank); } - return 0; } static int __maybe_unused mtk_iommu_runtime_suspend(struct device *dev) @@ -1595,7 +1594,7 @@ static const struct of_device_id mtk_iommu_of_ids[] = { static struct platform_driver mtk_iommu_driver = { .probe = mtk_iommu_probe, - .remove = mtk_iommu_remove, + .remove_new = mtk_iommu_remove, .driver = { .name = "mtk-iommu", .of_match_table = mtk_iommu_of_ids,
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 (mostly) ignored 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. 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> --- drivers/iommu/mtk_iommu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)