Comment 339 for bug 1667750

@Stanislaw, I followed the discussion you mentioned here:
https://bugzilla.kernel.org/show_bug.cgi?id=202541#c173

Other devices than rt2800usb devices are affected, too.
Tested this one before applying your patch:
ID 7392:7710 Edimax Technology Co., Ltd Edimax Wi-Fi
and running into the same xhci issue on USB controller mentioned here:
https://bugzilla.kernel.org/show_bug.cgi?id=202541#c175

[10214.423508] usb 1-2: new high-speed USB device number 3 using xhci_hcd
[10214.602833] usb 1-2: New USB device found, idVendor=7392, idProduct=7710, bcdDevice= 0.00
[10214.602838] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[10214.602841] usb 1-2: Product: Edimax Wi-Fi
[10214.602843] usb 1-2: Manufacturer: MediaTek
[10214.602845] usb 1-2: SerialNumber: 1.0
[10214.931553] usb 1-2: reset high-speed USB device number 3 using xhci_hcd
[10215.102895] mt7601u 1-2:1.0: ASIC revision: 76010001 MAC revision: 76010500
[10215.132670] mt7601u 1-2:1.0: Firmware Version: 0.1.00 Build: 7640 Build time: 201302052146____
[10216.101346] mt7601u 1-2:1.0: EEPROM ver:0d fae:00
[10216.111983] mt7601u 1-2:1.0: EEPROM country region 01 (channels 1-13)
[10217.189574] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[10217.190361] usbcore: registered new interface driver mt7601u
[10217.199429] mt7601u 1-2:1.0 wlp3s0f0u2: renamed from wlan0
[10296.419053] xhci_hcd 0000:03:00.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.
[10296.419228] xhci_hcd 0000:03:00.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.