[cgutman] 46706: [PCI] - Handle IRP_MN_QUERY_DEVICE_RELATIONS for TargetDeviceRelation for PCI's child PDOs

Author: cgutman
Date: Sun Apr  4 02:00:21 2010
New Revision: 46706

URL: http://svn.reactos.org/svn/reactos?rev=46706&view=rev
Log:
[PCI]
- Handle IRP_MN_QUERY_DEVICE_RELATIONS for TargetDeviceRelation for PCI's child PDOs

Modified:
    trunk/reactos/drivers/bus/pci/pdo.c

Modified: trunk/reactos/drivers/bus/pci/pdo.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/bus/pci/pdo.c?rev=…
==============================================================================
--- trunk/reactos/drivers/bus/pci/pdo.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/bus/pci/pdo.c [iso-8859-1] Sun Apr  4 02:00:21 2010
@@ -1290,6 +1290,33 @@
   return STATUS_SUCCESS;
 }
 
+static NTSTATUS
+PdoQueryDeviceRelations(
+  IN PDEVICE_OBJECT DeviceObject,
+  IN PIRP Irp,
+  PIO_STACK_LOCATION IrpSp)
+{
+  PDEVICE_RELATIONS DeviceRelations;
+
+  /* We only support TargetDeviceRelation for child PDOs */
+  if (IrpSp->Parameters.QueryDeviceRelations.Type != TargetDeviceRelation)
+      return Irp->IoStatus.Status;
+
+  /* We can do this because we only return 1 PDO for TargetDeviceRelation */
+  DeviceRelations = ExAllocatePool(PagedPool, sizeof(*DeviceRelations));
+  if (!DeviceRelations)
+      return STATUS_INSUFFICIENT_RESOURCES;
+
+  DeviceRelations->Count = 1;
+  DeviceRelations->Objects[0] = DeviceObject;
+
+  /* The PnP manager will remove this when it is done with the PDO */
+  ObReferenceObject(DeviceObject);
+
+  Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
+
+  return STATUS_SUCCESS;
+}
 
 static NTSTATUS
 PdoSetPower(
@@ -1362,8 +1389,7 @@
     break;
 
   case IRP_MN_QUERY_DEVICE_RELATIONS:
-    /* FIXME: Possibly handle for RemovalRelations */
-    DPRINT("Unimplemented IRP_MN_QUERY_DEVICE_RELATIONS received\n");
+    Status = PdoQueryDeviceRelations(DeviceObject, Irp, IrpSp);
     break;
 
   case IRP_MN_QUERY_DEVICE_TEXT: