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| author | Johan Hovold <johan@kernel.org> | 2025-10-20 07:53:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-11 17:19:06 +0300 |
| commit | f68d95c9fd712bdb7a135c2bbbf53a34ab1f04b4 (patch) | |
| tree | 2c4bfcd7da434c4e942b6e959cda02ea412a967c | |
| parent | b12ef4273f2ce9590d81da56c596622924b9c039 (diff) | |
| download | linux-f68d95c9fd712bdb7a135c2bbbf53a34ab1f04b4.tar.xz | |
iommu/mediatek: fix device leak on of_xlate()
commit b3f1ee18280363ef17f82b564fc379ceba9ec86f upstream.
Make sure to drop the reference taken to the iommu platform device when
looking up its driver data during of_xlate().
Fixes: 0df4fabe208d ("iommu/mediatek: Add mt8173 IOMMU driver")
Cc: stable@vger.kernel.org # 4.6
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.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d4cb09b2e267..bfe943cfa798 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -894,6 +894,8 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args) return -EINVAL; dev_iommu_priv_set(dev, platform_get_drvdata(m4updev)); + + put_device(&m4updev->dev); } return iommu_fwspec_add_ids(dev, args->args, 1); |