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path: root/drivers/iommu/exynos-iommu.c
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Diffstat (limited to 'drivers/iommu/exynos-iommu.c')
-rw-r--r--drivers/iommu/exynos-iommu.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 22bc7e5c4dcc..57ba0d3091ea 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -671,8 +671,8 @@ static int __maybe_unused exynos_sysmmu_resume(struct device *dev)
static const struct dev_pm_ops sysmmu_pm_ops = {
SET_RUNTIME_PM_OPS(exynos_sysmmu_suspend, exynos_sysmmu_resume, NULL)
- SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
- pm_runtime_force_resume)
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
};
static const struct of_device_id sysmmu_of_match[] __initconst = {
@@ -819,10 +819,6 @@ static void exynos_iommu_detach_device(struct iommu_domain *iommu_domain,
if (!has_sysmmu(dev) || owner->domain != iommu_domain)
return;
- list_for_each_entry(data, &owner->controllers, owner_node) {
- pm_runtime_put_sync(data->sysmmu);
- }
-
mutex_lock(&owner->rpm_lock);
list_for_each_entry(data, &owner->controllers, owner_node) {
@@ -886,10 +882,6 @@ static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain,
mutex_unlock(&owner->rpm_lock);
- list_for_each_entry(data, &owner->controllers, owner_node) {
- pm_runtime_get_sync(data->sysmmu);
- }
-
dev_dbg(dev, "%s: Attached IOMMU with pgtable %pa\n", __func__,
&pagetable);
@@ -1271,6 +1263,14 @@ static int exynos_iommu_of_xlate(struct device *dev,
list_add_tail(&data->owner_node, &owner->controllers);
data->master = dev;
+
+ /*
+ * SYSMMU will be runtime activated via device link (dependency) to its
+ * master device, so there are no direct calls to pm_runtime_get/put
+ * in this driver.
+ */
+ device_link_add(dev, data->sysmmu, DL_FLAG_PM_RUNTIME);
+
return 0;
}