WdfPdoInitAddHardwareID method
[Applies to KMDF only]
The WdfPdoInitAddHardwareID method adds a hardware ID to the list of hardware IDs for a child device.
Syntax
NTSTATUS WdfPdoInitAddHardwareID( [in] PWDFDEVICE_INIT DeviceInit, [in] PCUNICODE_STRING HardwareID );
Parameters
- DeviceInit [in]
-
A pointer to a WDFDEVICE_INIT structure.
- HardwareID [in]
-
A pointer to a UNICODE_STRING structure that contains a hardware 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 code | Description |
|---|---|
|
The driver is initializing an FDO instead of a PDO. |
|
The driver could not allocate space to store the hardware ID string. |
The method might also return other NTSTATUS values.
Remarks
The driver can add one or more hardware IDs for a device. They should be added in order from best match to worst match. The framework will deliver the IDs to the PnP manager in the order that they were added. For more information about hardware IDs, see Device Identification Strings and How Setup Selects Drivers.
The driver must call WdfPdoInitAddHardwareID before calling WdfDeviceCreate. For more information about calling WdfDeviceCreate, see Creating a Framework Device Object.
Examples
The following code example reports a hardware ID that the KbFiltr sample driver uses.
#define KBFILTR_DEVICE_ID L"{A65C87F9-BE02-4ed9-92EC-012D416169FA}\\KeyboardFilter\0"
DECLARE_CONST_UNICODE_STRING(hardwareId, KBFILTR_DEVICE_ID);
status = WdfPdoInitAddHardwareID(
pDeviceInit,
&hardwareId
);
Requirements
|
Minimum KMDF version | 1.0 |
|---|---|
|
Header |
|
|
Library |
|
|
IRQL | PASSIVE_LEVEL |
|
DDI compliance rules | ChildDeviceInitAPI, DriverCreate, InitFreeDeviceCallback, InitFreeDeviceCreate, InitFreeNull, KmdfIrql, KmdfIrql2, PdoDeviceInitAPI, PdoInitFreeDeviceCallback, PdoInitFreeDeviceCreate |
See also
