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| author | Johan Hovold <johan@kernel.org> | 2025-10-20 07:53:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-11 17:22:11 +0300 |
| commit | e7bcedf59b28dc84196087381a754d2d896e8174 (patch) | |
| tree | cfc93603b6d29f550b8c71d1d82d7acb4bac3e84 | |
| parent | 83a8e18f30a60f6e36876b803c60c3e102d39d3f (diff) | |
| download | linux-e7bcedf59b28dc84196087381a754d2d896e8174.tar.xz | |
iommu/mediatek-v1: fix device leak on probe_device()
commit c77ad28bfee0df9cbc719eb5adc9864462cfb65b upstream.
Make sure to drop the reference taken to the iommu platform device when
looking up its driver data during probe_device().
Fixes: b17336c55d89 ("iommu/mediatek: add support for mtk iommu generation one HW")
Cc: stable@vger.kernel.org # 4.8
Cc: Honghui Zhang <honghui.zhang@mediatek.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iommu/mtk_iommu_v1.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index f1754efcfe74..e996c1418b24 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -420,6 +420,8 @@ static int mtk_iommu_v1_create_mapping(struct device *dev, struct of_phandle_arg return -EINVAL; dev_iommu_priv_set(dev, platform_get_drvdata(m4updev)); + + put_device(&m4updev->dev); } ret = iommu_fwspec_add_ids(dev, args->args, 1); |