[ros-diffs] [tfaber] 72017: [NTOS:PO] - Send power IRPs to the top of the device stack instead of the PDO CORE-10110 #resolve

Author: tfaber
Date: Wed Jul 27 11:15:52 2016
New Revision: 72017

URL: http://svn.reactos.org/svn/reactos?rev=72017&view=rev
Log:
[NTOS:PO]
- Send power IRPs to the top of the device stack instead of the PDO
CORE-10110 #resolve

Modified:
    trunk/reactos/ntoskrnl/po/power.c

Modified: trunk/reactos/ntoskrnl/po/power.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/po/power.c?rev=72…
==============================================================================
--- trunk/reactos/ntoskrnl/po/power.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/po/power.c	[iso-8859-1] Wed Jul 27 11:15:52 2016
@@ -153,6 +153,7 @@
                                  PVOID Context)
 {
     PPOWER_STATE_TRAVERSE_CONTEXT PowerStateContext = Context;
+    PDEVICE_OBJECT TopDeviceObject;
     NTSTATUS Status;
 
     DPRINT("PopQuerySystemPowerStateTraverse(%p, %p)\n", DeviceNode, Context);
@@ -163,13 +164,16 @@
     if (DeviceNode->Flags & DNF_LEGACY_DRIVER)
         return STATUS_SUCCESS;
 
-    Status = PopSendQuerySystemPowerState(DeviceNode->PhysicalDeviceObject,
+    TopDeviceObject = IoGetAttachedDeviceReference(DeviceNode->PhysicalDeviceObject);
+
+    Status = PopSendQuerySystemPowerState(TopDeviceObject,
                                           PowerStateContext->SystemPowerState,
                                           PowerStateContext->PowerAction);
     if (!NT_SUCCESS(Status))
     {
         DPRINT1("Device '%wZ' failed IRP_MN_QUERY_POWER\n",
&DeviceNode->InstancePath);
     }
+    ObDereferenceObject(TopDeviceObject);
 
 #if 0
     return Status;
@@ -183,6 +187,7 @@
                                PVOID Context)
 {
     PPOWER_STATE_TRAVERSE_CONTEXT PowerStateContext = Context;
+    PDEVICE_OBJECT TopDeviceObject;
     NTSTATUS Status;
 
     DPRINT("PopSetSystemPowerStateTraverse(%p, %p)\n", DeviceNode, Context);
@@ -196,13 +201,22 @@
     if (DeviceNode->Flags & DNF_LEGACY_DRIVER)
         return STATUS_SUCCESS;
 
-    Status = PopSendSetSystemPowerState(DeviceNode->PhysicalDeviceObject,
+    TopDeviceObject = IoGetAttachedDeviceReference(DeviceNode->PhysicalDeviceObject);
+    if (TopDeviceObject == PowerStateContext->PowerDevice)
+    {
+        ObDereferenceObject(TopDeviceObject);
+        return STATUS_SUCCESS;
+    }
+
+    Status = PopSendSetSystemPowerState(TopDeviceObject,
                                         PowerStateContext->SystemPowerState,
                                         PowerStateContext->PowerAction);
     if (!NT_SUCCESS(Status))
     {
         DPRINT1("Device '%wZ' failed IRP_MN_SET_POWER\n",
&DeviceNode->InstancePath);
     }
+
+    ObDereferenceObject(TopDeviceObject);
 
 #if 0
     return Status;