[PATCH 2/8] iommu/qcom: Fix missing pm_runtime_disable() in qcom_iommu_device_remove()

[Mukesh Ojha]

qcom_iommu_device_probe() calls pm_runtime_enable() but
qcom_iommu_device_remove() only calls pm_runtime_force_suspend() without
a matching pm_runtime_disable(). This leaves runtime PM enabled after the
driver unbinds, which can cause issues on rebind or if any code races to
resume the device after removal.

Add pm_runtime_disable() in the remove path to balance the enable in probe.

Signed-off-by: Mukesh Ojha <mukesh.ojha at oss.qualcomm.com>
---
 drivers/iommu/arm/arm-smmu/qcom_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c
index 09f2ee6be988..cb43276f4a39 100644
--- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c
+++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c
@@ -878,6 +878,7 @@ static void qcom_iommu_device_remove(struct platform_device *pdev)
 	struct qcom_iommu_dev *qcom_iommu = platform_get_drvdata(pdev);
 
 	pm_runtime_force_suspend(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 	platform_set_drvdata(pdev, NULL);
 	iommu_device_sysfs_remove(&qcom_iommu->iommu);
 	iommu_device_unregister(&qcom_iommu->iommu);
-- 
2.53.0