WdfPdoInitAssignDeviceID method

[Applies to KMDF only]

The WdfPdoInitAssignDeviceID method updates the device ID for a child device.

Syntax


NTSTATUS WdfPdoInitAssignDeviceID(
  [in] PWDFDEVICE_INIT  DeviceInit,
  [in] PCUNICODE_STRING DeviceID
);

Parameters

DeviceInit [in]

A pointer to a WDFDEVICE_INIT structure.

DeviceID [in]

A pointer to a UNICODE_STRING structure that contains a device ID string. The driver can allocate the string's buffer from paged pool.

Return value

If the operation succeeds, the method returns STATUS_SUCCESS. Additional return values include:

Return codeDescription
STATUS_INVALID_DEVICE_REQUEST

The driver is initializing an FDO instead of a PDO.

STATUS_INSUFFICIENT_RESOURCES

The driver could not allocate space to store the device ID string.

 

The method might also return other NTSTATUS values.

Remarks

A device ID is typically the first item in the list of hardware IDs that a device reports. For more information about device IDs and hardware IDs, see Device Identification Strings and How Setup Selects Drivers.

The driver must call WdfPdoInitAssignDeviceID before calling WdfDeviceCreate. For more information about calling WdfDeviceCreate, see Creating a Framework Device Object.

Examples

The following code example reports a device ID that the KbFiltr sample driver uses.


#define  KBFILTR_DEVICE_ID L"{A65C87F9-BE02-4ed9-92EC-012D416169FA}\\KeyboardFilter\0"
DECLARE_CONST_UNICODE_STRING(deviceId,KBFILTR_DEVICE_ID);

status = WdfPdoInitAssignDeviceID(
                                  pDeviceInit,
                                  &deviceId
                                  );

Requirements

Target platform

Universal

Minimum KMDF version

1.0

Header

Wdfpdo.h (include Wdf.h)

Library

Wdf01000.sys (see Framework Library Versioning.)

IRQL

PASSIVE_LEVEL

DDI compliance rules

ChildDeviceInitAPI, DriverCreate, InitFreeDeviceCallback, InitFreeDeviceCreate, InitFreeNull, KmdfIrql, KmdfIrql2, PdoDeviceInitAPI, PdoInitFreeDeviceCallback, PdoInitFreeDeviceCreate

See also

WdfPdoInitAssignInstanceID
WdfPdoInitAddHardwareID
WdfPdoInitAddCompatibleID

 

 

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