NTSTATUS
NTAPI
Bus_Power (
PDEVICE_OBJECT DeviceObject,
PIRP Irp
)
{
PIO_STACK_LOCATION irpStack;
NTSTATUS status;
PCOMMON_DEVICE_DATA commonData;
status = STATUS_SUCCESS;
irpStack = IoGetCurrentIrpStackLocation (Irp);
ASSERT (IRP_MJ_POWER == irpStack->MajorFunction);
commonData = (PCOMMON_DEVICE_DATA) DeviceObject->DeviceExtension;
if (commonData->IsFDO) {
DPRINT("FDO %s IRP:0x%p %s %s\n",
PowerMinorFunctionString(irpStack->MinorFunction), Irp,
DbgSystemPowerString(commonData->SystemPowerState),
DbgDevicePowerString(commonData->DevicePowerState));
status = Bus_FDO_Power ((PFDO_DEVICE_DATA)DeviceObject->DeviceExtension,
Irp);
} else {
DPRINT("PDO %s IRP:0x%p %s %s\n",
PowerMinorFunctionString(irpStack->MinorFunction), Irp,
DbgSystemPowerString(commonData->SystemPowerState),
DbgDevicePowerString(commonData->DevicePowerState));
status = Bus_PDO_Power ((PPDO_DEVICE_DATA)DeviceObject->DeviceExtension,
Irp);
}
return status;
}
NTSTATUS
Bus_Power (
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
/*++
Handles power Irps sent to both FDO and child PDOs.
Note: Currently we do not implement full power handling
for the FDO.
Arguments:
DeviceObject - Pointer to the device object.
Irp - Pointer to the irp.
Return Value:
NT status is returned.
--*/
{
PIO_STACK_LOCATION irpStack;
NTSTATUS status;
PCOMMON_DEVICE_DATA commonData;
status = STATUS_SUCCESS;
irpStack = IoGetCurrentIrpStackLocation (Irp);
ASSERT (IRP_MJ_POWER == irpStack->MajorFunction);
commonData = (PCOMMON_DEVICE_DATA) DeviceObject->DeviceExtension;
//
// If the device has been removed, the driver should
// not pass the IRP down to the next lower driver.
//
if (commonData->DevicePnPState == Deleted) {
PoStartNextPowerIrp (Irp);
Irp->IoStatus.Status = status = STATUS_NO_SUCH_DEVICE ;
IoCompleteRequest (Irp, IO_NO_INCREMENT);
return status;
}
if (commonData->IsFDO) {
Bus_KdPrint (commonData, BUS_DBG_POWER_TRACE,
("FDO %s IRP:0x%p %s %s\n",
PowerMinorFunctionString(irpStack->MinorFunction), Irp,
DbgSystemPowerString(commonData->SystemPowerState),
DbgDevicePowerString(commonData->DevicePowerState)));
status = Bus_FDO_Power ((PFDO_DEVICE_DATA)DeviceObject->DeviceExtension,
Irp);
} else {
Bus_KdPrint (commonData, BUS_DBG_POWER_TRACE,
("PDO %s IRP:0x%p %s %s\n",
PowerMinorFunctionString(irpStack->MinorFunction), Irp,
DbgSystemPowerString(commonData->SystemPowerState),
DbgDevicePowerString(commonData->DevicePowerState)));
status = Bus_PDO_Power ((PPDO_DEVICE_DATA)DeviceObject->DeviceExtension,
Irp);
}
return status;
}
