diff --git a/subsys/pm/device_runtime.c b/subsys/pm/device_runtime.c
index f719b4772eb..4533886dd2a 100644
--- a/subsys/pm/device_runtime.c
+++ b/subsys/pm/device_runtime.c
@@ -563,25 +563,9 @@ bool pm_device_runtime_is_enabled(const struct device *dev)
 
 int pm_device_runtime_usage(const struct device *dev)
 {
-	struct pm_device *pm = dev->pm;
-	uint32_t usage;
-
 	if (!pm_device_runtime_is_enabled(dev)) {
 		return -ENOTSUP;
 	}
 
-	if (atomic_test_bit(&dev->pm_base->flags, PM_DEVICE_FLAG_ISR_SAFE)) {
-		struct pm_device_isr *pm_sync = dev->pm_isr;
-		k_spinlock_key_t k = k_spin_lock(&pm_sync->lock);
-
-		usage = pm_sync->base.usage;
-
-		k_spin_unlock(&pm_sync->lock, k);
-	} else {
-		(void)k_sem_take(&pm->lock, K_FOREVER);
-		usage = pm->base.usage;
-		k_sem_give(&pm->lock);
-	}
-
-	return usage;
+	return dev->pm_base->usage;
 }