Commit c77ad28b authored by Johan Hovold's avatar Johan Hovold Committed by Joerg Roedel
Browse files

iommu/mediatek-v1: fix device leak on probe_device() 



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

Fixes: b17336c5 ("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: default avatarRobin Murphy <robin.murphy@arm.com>
Reviewed-by: default avatarYong Wu <yong.wu@mediatek.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 4f2a4aec

drivers/iommu/mtk_iommu_v1.c

+2 −0
Original line number Diff line number Diff line
@@ -438,6 +438,8 @@ static int mtk_iommu_v1_create_mapping(struct device *dev, 
			return -EINVAL;



		dev_iommu_priv_set(dev, platform_get_drvdata(m4updev));



		put_device(&m4updev->dev);

	}



	ret = iommu_fwspec_add_ids(dev, args->args, 1);