HI:
The printing test is added here. When the USB disk device is inserted, the repeated mass restart test will be carried out.There
will be a probability of disk loss. When the disk is dropped, the PORTSC register is read. The USB state machine is abnormal.
Its PLS field is 6. Check the protocol document, so warm reset it. The test is normal and no disk loss occurs again.

The left is normal, and the right is abnormal.
After XhcUsbPortReset.The normal PORTSC register status is 0x1203, EXCEPTION PORTSC register status is 0x2202c0.
The USB device has been disconnected.

After hot reset, the device can be connected normally.

In the source code, it is confirmed that Usb3.0 is used. Do you need to judge again?

Thanks!