iommu/mediatek-v1: fix device leaks on probe()

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commit 46207625c9 upstream.

Make sure to drop the references taken to the larb devices during
probe on probe failure (e.g. probe deferral) and on driver unbind.

Fixes: b17336c55d ("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>
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 06:53:13 +02:00 • committed by Greg Kroah-Hartman

parent 11cd45ac86

commit 9d90e4e898

1 changed files with 18 additions and 5 deletions

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drivers/iommu/mtk_iommu_v1.c

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