iommu/mediatek: fix device leak on of_xlate()

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commit b3f1ee1828 upstream.

Make sure to drop the reference taken to the iommu platform device when
looking up its driver data during of_xlate().

Fixes: 0df4fabe20 ("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>

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Johan Hovold 2025-10-20 06:53:09 +02:00 • committed by Greg Kroah-Hartman

parent 9d90e4e898

commit df5b008058

1 changed files with 2 additions and 0 deletions

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drivers/iommu/mtk_iommu.c

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