PcUnregisterAdapterPowerManagement function (portcls.h)
The PcUnregisterAdapterPowerManagement function unregisters the audio adapter's power management interface from the PortCls class driver. The PcUnregisterAdapterPowerManagement function is available in Windows 7 and later versions of Windows.
Syntax
PORTCLASSAPI NTSTATUS PcUnregisterAdapterPowerManagement(
[in] PDEVICE_OBJECT pDeviceObject
);
Parameters
[in] pDeviceObject
Specifies a pointer to a DEVICE_OBJECT structure that represents the functional device object of the adapter.
Return value
The PcUnregisterAdapterPowerManagement function returns STATUS_SUCCESS if the function call was successful. Otherwise, it returns the appropriate error code.
Remarks
The PcUnregisterAdapterPowerManagement function unregisters a driver's power management interface that was registered with PortCls by using the PcRegisterAdapterPowerManagement function. PcUnregisterAdapterPowerManagement helps the system to avoid making a power change request while the adapter driver is being unloaded. This function must only be called if the power management interface for the adapter was previously registered with PortCls.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 7 and later versions of Windows. |
| Target Platform | Universal |
| Header | portcls.h (include Portcls.h) |
| Library | Portcls.lib |
| IRQL | PASSIVE_LEVEL. |