From: Aric Stewart <aric@codeweavers.com>
Subject: [11/12] hidclass.sys: Implement sending IRP_MJ_POWER to the minidriver
Message-Id: <55A4FED5.5070909@codeweavers.com>
Date: Tue, 14 Jul 2015 07:21:41 -0500

---
 dlls/hidclass.sys/pnp.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/dlls/hidclass.sys/pnp.c b/dlls/hidclass.sys/pnp.c
index 673905c..5ff12f6 100644
--- a/dlls/hidclass.sys/pnp.c
+++ b/dlls/hidclass.sys/pnp.c
@@ -88,6 +88,22 @@ static NTSTATUS PNP_SendPnPIRP(DEVICE_OBJECT *device, UCHAR minor)
     return SendDeviceIRP(device, irp);
 }
 
+static NTSTATUS PNP_SendPowerIRP(DEVICE_OBJECT *device, DEVICE_POWER_STATE power)
+{
+    IO_STATUS_BLOCK irp_status;
+    IO_STACK_LOCATION *irpsp;
+
+    IRP *irp = IoBuildSynchronousFsdRequest(IRP_MJ_POWER, device, NULL, 0, NULL, NULL, &irp_status);
+
+    irpsp = IoGetNextIrpStackLocation(irp);
+    irpsp->MinorFunction = IRP_MN_SET_POWER;
+
+    irpsp->Parameters.Power.Type = DevicePowerState;
+    irpsp->Parameters.Power.State.DeviceState = power;
+
+    return SendDeviceIRP(device, irp);
+}
+
 NTSTATUS WINAPI PNP_AddDevice(DRIVER_OBJECT *driver, void *native)
 {
     DEVICE_OBJECT *device = NULL;
@@ -240,6 +256,7 @@ NTSTATUS WINAPI PNP_AddDevice(DRIVER_OBJECT *driver, void *native)
     ext->ring_buffer = RingBuffer_Create(sizeof(HID_XFER_PACKET) + ext->preparseData->caps.InputReportByteLength);
 
     HID_StartDeviceThread(device);
+    PNP_SendPowerIRP(device, PowerDeviceD0);
 
     return STATUS_SUCCESS;
 }
@@ -254,6 +271,7 @@ void PNP_CleanupPNP(DRIVER_OBJECT *driver)
         if (tracked_device->minidriver->DriverObject == driver)
         {
             list_remove(&tracked_device->entry);
+            PNP_SendPowerIRP(tracked_device->device, PowerDeviceD3);
             PNP_SendPnPIRP(tracked_device->device, IRP_MN_REMOVE_DEVICE);
             HID_DeleteDevice(tracked_device->minidriver, tracked_device->device);
             HeapFree(GetProcessHeap(), 0, tracked_device);