6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
[ Upstream commit 85e1049e50da9409678fc247ebad4c019d68041f ]
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 Link: https://lore.kernel.org/r/20230321084125.337021-9-u.kleine-koenig@pengutroni... Signed-off-by: Joerg Roedel jroedel@suse.de Stable-dep-of: 46207625c9f3 ("iommu/mediatek-v1: fix device leaks on probe()") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iommu/mtk_iommu_v1.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -708,7 +708,7 @@ out_clk_unprepare: return ret; }
-static int mtk_iommu_v1_remove(struct platform_device *pdev) +static void mtk_iommu_v1_remove(struct platform_device *pdev) { struct mtk_iommu_v1_data *data = platform_get_drvdata(pdev);
@@ -718,7 +718,6 @@ static int mtk_iommu_v1_remove(struct pl clk_disable_unprepare(data->bclk); devm_free_irq(&pdev->dev, data->irq, data); component_master_del(&pdev->dev, &mtk_iommu_v1_com_ops); - return 0; }
static int __maybe_unused mtk_iommu_v1_suspend(struct device *dev) @@ -757,7 +756,7 @@ static const struct dev_pm_ops mtk_iommu
static struct platform_driver mtk_iommu_v1_driver = { .probe = mtk_iommu_v1_probe, - .remove = mtk_iommu_v1_remove, + .remove_new = mtk_iommu_v1_remove, .driver = { .name = "mtk-iommu-v1", .of_match_table = mtk_iommu_v1_of_ids,