From: Liang He <windhl@xxxxxxx> [ Upstream commit a91eb6803c1c715738682fece095145cbd68fe0b ] In qcom_iommu_has_secure_context(), we should call of_node_put() for the reference 'child' when breaking out of for_each_child_of_node() which will automatically increase and decrease the refcount. Fixes: d051f28c8807 ("iommu/qcom: Initialize secure page table") Signed-off-by: Liang He <windhl@xxxxxxx> Link: https://lore.kernel.org/r/20220719124955.1242171-1-windhl@xxxxxxx Signed-off-by: Will Deacon <will@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/iommu/qcom_iommu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index b0a4a3d2f60e..244e2f7eae84 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -767,9 +767,12 @@ static bool qcom_iommu_has_secure_context(struct qcom_iommu_dev *qcom_iommu) { struct device_node *child; - for_each_child_of_node(qcom_iommu->dev->of_node, child) - if (of_device_is_compatible(child, "qcom,msm-iommu-v1-sec")) + for_each_child_of_node(qcom_iommu->dev->of_node, child) { + if (of_device_is_compatible(child, "qcom,msm-iommu-v1-sec")) { + of_node_put(child); return true; + } + } return false; } -- 2.35.1