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iommu/arm-smmu: qcom_iommu: Add of_node_put() when breaking out of loop

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[ 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@126.com>
Link: https://lore.kernel.org/r/20220719124955.1242171-1-windhl@126.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Liang He 2022-07-19 20:49:55 +08:00 committed by Greg Kroah-Hartman
parent facd31bbc7
commit c7d4e6cdd1
1 changed files with 5 additions and 2 deletions
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7
drivers/iommu/arm/arm-smmu/qcom_iommu.c
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@ -748,9 +748,12 @@ 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;
}