From c57a3c88a0c03e3a720c8ee5bff4679d6719c021 Mon Sep 17 00:00:00 2001
From: Johannes Anderwald <johannes.anderwald@reactos.org>
Date: Sun, 26 May 2013 17:18:19 +0000
Subject: [PATCH] [USBSTOR] - Hackplement IRP_MJ_POWER support - Inspired by
 Thomas (Blame him ;))

svn path=/trunk/; revision=59084
---
 reactos/drivers/usb/usbstor/usbstor.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/reactos/drivers/usb/usbstor/usbstor.c b/reactos/drivers/usb/usbstor/usbstor.c
index fb7f70f3884..44daca0666a 100644
--- a/reactos/drivers/usb/usbstor/usbstor.c
+++ b/reactos/drivers/usb/usbstor/usbstor.c
@@ -212,12 +212,24 @@ USBSTOR_DispatchPower(
     PDEVICE_OBJECT DeviceObject,
     PIRP Irp)
 {
-    UNIMPLEMENTED
+    PFDO_DEVICE_EXTENSION DeviceExtension;
 
-    Irp->IoStatus.Information = 0;
-    Irp->IoStatus.Status = STATUS_SUCCESS;
-    IoCompleteRequest(Irp, IO_NO_INCREMENT);
-    return STATUS_SUCCESS;
+    // get common device extension
+    DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
+
+    if (DeviceExtension->Common.IsFDO)
+    {
+        PoStartNextPowerIrp(Irp);
+        IoSkipCurrentIrpStackLocation(Irp);
+        return PoCallDriver(DeviceExtension->LowerDeviceObject, Irp);
+    }
+    else
+    {
+        PoStartNextPowerIrp(Irp);
+        Irp->IoStatus.Status = STATUS_SUCCESS;
+        IoCompleteRequest(Irp, IO_NO_INCREMENT);
+        return STATUS_SUCCESS;
+    }
 }