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iommu/qcom: add missing put_device() call in qcom_iommu_of_xlate()

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if of_find_device_by_node() succeed, qcom_iommu_of_xlate() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.

Fixes: 0ae349a0f3 ("iommu/qcom: Add qcom_iommu")
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20200929014037.2436663-1-yukuai3@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Yu Kuai 2020-09-29 09:40:37 +08:00 committed by Will Deacon
parent f534d98b9d
commit e2eae09939
1 changed files with 6 additions and 2 deletions
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8
drivers/iommu/arm/arm-smmu/qcom_iommu.c
View file

@ -584,8 +584,10 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
* index into qcom_iommu->ctxs:
*/
if (WARN_ON(asid < 1) ||
WARN_ON(asid > qcom_iommu->num_ctxs))
WARN_ON(asid > qcom_iommu->num_ctxs)) {
put_device(&iommu_pdev->dev);
return -EINVAL;
}
if (!dev_iommu_priv_get(dev)) {
dev_iommu_priv_set(dev, qcom_iommu);
@ -594,8 +596,10 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
* multiple different iommu devices. Multiple context
* banks are ok, but multiple devices are not:
*/
if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev)))
if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev))) {
put_device(&iommu_pdev->dev);
return -EINVAL;
}
}
return iommu_fwspec_add_ids(dev, &asid, 1);