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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2022-12-19 19:06:22 +0100
committerJoerg Roedel <jroedel@suse.de>2023-01-13 13:46:32 +0100
commit142e821f68cf5da79ce722cb9c1323afae30e185 (patch)
tree946bd0aad4107b602e697d5e22e3c9bbb7a7c3ad /drivers
parentdcdb3ba7e2a8caae7bfefd603bc22fd0ce9a389c (diff)
iommu/mediatek-v1: Fix an error handling path in mtk_iommu_v1_probe()
A clk, prepared and enabled in mtk_iommu_v1_hw_init(), is not released in the error handling path of mtk_iommu_v1_probe(). Add the corresponding clk_disable_unprepare(), as already done in the remove function. Fixes: b17336c55d89 ("iommu/mediatek: add support for mtk iommu generation one HW") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/593e7b7d97c6e064b29716b091a9d4fd122241fb.1671473163.git.christophe.jaillet@wanadoo.fr Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/iommu/mtk_iommu_v1.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index 69682ee068d2..ca581ff1c769 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -683,7 +683,7 @@ static int mtk_iommu_v1_probe(struct platform_device *pdev)
ret = iommu_device_sysfs_add(&data->iommu, &pdev->dev, NULL,
dev_name(&pdev->dev));
if (ret)
- return ret;
+ goto out_clk_unprepare;
ret = iommu_device_register(&data->iommu, &mtk_iommu_v1_ops, dev);
if (ret)
@@ -698,6 +698,8 @@ out_dev_unreg:
iommu_device_unregister(&data->iommu);
out_sysfs_remove:
iommu_device_sysfs_remove(&data->iommu);
+out_clk_unprepare:
+ clk_disable_unprepare(data->bclk);
return ret;
}