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 Signed-off-by: Johan Hovold johan@kernel.org --- drivers/iommu/ipmmu-vmsa.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index ffa892f65714..02a2a55ffa0a 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -720,6 +720,8 @@ static int ipmmu_init_platform_device(struct device *dev,
dev_iommu_priv_set(dev, platform_get_drvdata(ipmmu_pdev));
+ put_device(&ipmmu_pdev->dev); + return 0; }