IoInvalidateDeviceState function (wdm.h)
The IoInvalidateDeviceState routine notifies the PnP manager that some aspect of the PnP state of a device has changed.
C++
void IoInvalidateDeviceState(
[in] PDEVICE_OBJECT PhysicalDeviceObject
);
[in] PhysicalDeviceObject
Pointer to the PDO for the device.
None
Drivers call this routine to indicate that something has changed with respect to one of the following aspects of a device's PnP state:
PNP_DEVICE_DISABLED
PNP_DEVICE_DONT_DISPLAY_IN_UI
PNP_DEVICE_FAILED
PNP_DEVICE_NOT_DISABLEABLE
PNP_DEVICE_REMOVED
PNP_DEVICE_RESOURCE_REQUIREMENTS_CHANGED
For descriptions of the preceding constants, see PNP_DEVICE_STATE.
In response to this routine, the PnP manager sends an IRP_MN_QUERY_PNP_DEVICE_STATE request to the device stack, to determine the current PnP state of the device.
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <= DISPATCH_LEVEL |