6.6-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan@kernel.org
commit 80aa518452c4aceb9459f9a8e3184db657d1b441 upstream.
Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate().
Fixes: 7b2d59611fef ("iommu/ipmmu-vmsa: Replace local utlb code with fwspec ids") Cc: stable@vger.kernel.org # 4.14 Cc: Magnus Damm damm+renesas@opensource.se Acked-by: Robin Murphy robin.murphy@arm.com Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Joerg Roedel joerg.roedel@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iommu/ipmmu-vmsa.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -681,6 +681,8 @@ static int ipmmu_init_platform_device(st
dev_iommu_priv_set(dev, platform_get_drvdata(ipmmu_pdev));
+ put_device(&ipmmu_pdev->dev); + return 0; }