Comment 251 for bug 1667750

The bad thing on this issue is that it isn't detectable by an application, while the device is plugged in. The device doesn't start or stops working without any warning. The application says every thing is fine and dmesg showing absolutely no warning.
Only when the device is plugged out, we get a bunch of warnings, depending on the device (tested on INTEL and AMD systems):
"WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state"
"rt2x00queue_flush_queue: Warning - Queue 14 failed to flush"
"rx urb failed: -71"
"A Set TR Deq Ptr command is pending."
and more (bad cable, hardware error, ....).

BTW:
I'm running kernel 4.19.80 in parallel and every thing is fine here. This issue appeared for the first time on 4.20.