diff --git a/drivers/power/pm/pm_idle.c b/drivers/power/pm/pm_idle.c
index 42f37cdf9b0..80d65a4ca85 100644
--- a/drivers/power/pm/pm_idle.c
+++ b/drivers/power/pm/pm_idle.c
@@ -146,10 +146,11 @@ void pm_idle(pm_idle_handler_t handler)
 
   /* If sched lock before irq save, and irq handler do post, scheduler will
    * be delayed after WFI until next sched unlock. which is not acceptable.
+   * per cpu sched_lock/unlock is not available here, all post/wait api will
+   * not allow in pm_callbacks.
    */
 
   flags = up_irq_save();
-  sched_lock();
 
   oldstate = pm_querystate(domain);
   newstate = pm_checkstate(domain);
@@ -200,10 +201,11 @@ void pm_idle(pm_idle_handler_t handler)
 
   /* If there is pending irq, enable irq make handlers finish all
    * execution will be better decrease scheduler context switch times.
+   * per cpu sched_lock/unlock is not available here, all post/wait api will
+   * not allow in pm_callbacks.
    */
 
   up_irq_restore(flags);
-  sched_unlock();
 }
 
 #else