UfxDeviceNotifyHardwareReady 函式 (ufxclient.h)

通知UFX硬體已就緒。

語法

void UfxDeviceNotifyHardwareReady(
  [in] UFXDEVICE UfxDevice
);

參數

[in] UfxDevice

呼叫 UfxDeviceCreate所建立驅動程式的UFX裝置物件的句柄。

傳回值

無

備註

用戶端驅動程式通常會從其 EvtDeviceD0Entry 回呼函式呼叫 UfxDeviceNotifyHardwareReady，如下列範例所示。

NTSTATUS
OnEvtDeviceD0Entry (
  _In_ WDFDEVICE Device,
  _In_ WDF_POWER_DEVICE_STATE PreviousState
)
/*++

Routine Description:

    Called by the framework after entering D0 state.

Arguments:

    Device - WDFDEVICE framework handle to the bus FDO.

    PreviousState - The WDF_POWER_DEVICE_STATE from which the stack is
        making this transition.

Return Value:

    Returns STATUS_SUCCESS or an appropriate NTSTATUS code otherwise.

--*/
{
    PCONTROLLER_CONTEXT ControllerContext;

    TraceEntry();

    ControllerContext = DeviceGetControllerContext(Device);

    if (PreviousState > WdfPowerDeviceD1) { 
        DevicePerformSoftReset(Device);

        WdfWaitLockAcquire(ControllerContext->InitializeDefaultEndpointLock, NULL);
        ControllerContext->InitializeDefaultEndpoint = TRUE;
        WdfWaitLockRelease(ControllerContext->InitializeDefaultEndpointLock);
    }

    if (PreviousState == WdfPowerDeviceD3Final) {
        //
        // Notify UFX that HW is now ready
        //
        UfxDeviceNotifyHardwareReady(ControllerContext->UfxDevice);
    }

    TraceExit();
    return STATUS_SUCCESS;
}

規格需求

需求	值
最低支援的用戶端	Windows 10
目標平台	Windows
標頭	ufxclient.h
程式庫	ufxstub.lib
IRQL	DISPATCH_LEVEL