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The class driver sends this request to signal to the minidriver that it should reset its power state. pSrb->DeviceState specifies the new power state.
Return value
The minidriver should set one of the following as the status in the SRB:
| Value | Description |
|---|---|
| STATUS_SUCCESS | Indicates successful completion of the command. |
| STATUS_NOT_IMPLEMENTED | Indicates that the function is not supported by the minidriver. |
| STATUS_IO_DEVICE_ERROR | Indicates that a hardware failure occurred and low power cannot be invoked. |
Remarks
If the minidriver needs to save or restore device-specific data it should do so when processing an SRB_CHANGE_POWER_STATE request.
For more information about power states, see Power IRPs for Individual Devices.