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I am doing the usb selective suspend below is the code.
WDF_DEVICE_POWER_POLICY_IDLE_SETTINGS_INIT(&IdleSettings, IdleUsbSelectiveSuspend); IdleSettings.IdleTimeout = 10000; NtStatus = WdfDeviceAssignS0IdleSettings(Device, &IdleSettings); // // Init wait-wake policy structure. // WDF_DEVICE_POWER_POLICY_WAKE_SETTINGS_INIT(&WakeSettings); NtStatus = WdfDeviceAssignSxWakeSettings(Device, &WakeSettings);
I have added the above code in prepare hardware.
For the first time device goes into low power state(D2 state) and then I did some TX and device was back in D0 state.
Then I did a unplug and replug of the device and after 10 secs of being idle the device again went to low power state which is expected.
But then after some time I am getting a surprise removal event and driver gets unloaded and gets loaded again and this cycle continuous.
This is happening only if I unplug and replug the device.
Please let me what could be the cause for surprise removal and how I can fix it.
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