IoInvalidateDeviceState function (wdm.h)
The IoInvalidateDeviceState routine notifies the PnP manager that some aspect of the PnP state of a device has changed.
Syntax
void IoInvalidateDeviceState(
[in] PDEVICE_OBJECT PhysicalDeviceObject
);
Parameters
[in] PhysicalDeviceObject
Pointer to the PDO for the device.
Return value
None
Remarks
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.
Requirements
| 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 |