Tested another device against the applied patches to make sure the issue isn't related to the combination rt2800usb - usb host:
ID 7392:7710 Edimax Technology Co., Ltd Edimax Wi-Fi
[ 68.126337] usb 1-2: new high-speed USB device number 17 using xhci_hcd
[ 68.181565] usb 1-2: New USB device found, idVendor=7392, idProduct=7710, bcdDevice= 0.00
[ 68.181568] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 68.181571] usb 1-2: Product: Edimax Wi-Fi
[ 68.181573] usb 1-2: Manufacturer: MediaTek
[ 68.181575] usb 1-2: SerialNumber: 1.0
[ 68.398420] usb 1-2: reset high-speed USB device number 17 using xhci_hcd
[ 68.446602] mt7601u 1-2:1.0: ASIC revision: 76010001 MAC revision: 76010500
[ 68.473662] mt7601u 1-2:1.0: Firmware Version: 0.1.00 Build: 7640 Build time: 201302052146____
[ 69.461098] mt7601u 1-2:1.0: EEPROM ver:0d fae:00
[ 69.472103] mt7601u 1-2:1.0: EEPROM country region 01 (channels 1-13)
[ 70.152995] mt7601u 1-2:1.0: Warning: mt7601u_mcu_wait_resp retrying
[ 70.472567] mt7601u 1-2:1.0: Warning: mt7601u_mcu_wait_resp retrying
[ 70.792966] mt7601u 1-2:1.0: Warning: mt7601u_mcu_wait_resp retrying
[ 71.112927] mt7601u 1-2:1.0: Warning: mt7601u_mcu_wait_resp retrying
[ 71.432909] mt7601u 1-2:1.0: Warning: mt7601u_mcu_wait_resp retrying
[ 71.432913] mt7601u 1-2:1.0: Error: mt7601u_mcu_wait_resp timed out
[ 71.433388] xhci_hcd 0000:03:00.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.
[ 71.435442] xhci_hcd 0000:03:00.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.
[ 71.582930] mt7601u 1-2:1.0: Vendor request req:07 off:0080 failed:-71
[ 71.729217] mt7601u 1-2:1.0: Vendor request req:02 off:0080 failed:-71
After the device is unplugged, dmesg log is spammed:
[ 363.312561] mt7601u 1-2:1.0: Vendor request req:07 off:0730 failed:-71
[ 363.479252] mt7601u 1-2:1.0: Vendor request req:07 off:0730 failed:-71
[ 363.649243] mt7601u 1-2:1.0: Vendor request req:07 off:0730 failed:-71
...
[ 380.069000] mt7601u 1-2:1.0: Vendor request req:02 off:0080 failed:-71
[ 380.069055] mt7601u: probe of 1-2:1.0 failed with error -110
[ 380.069272] usb 1-2: USB disconnect, device number 90
@Bernhard: I can confirm missing Error message on some devices, too. The devices are not working.
Tested another device against the applied patches to make sure the issue isn't related to the combination rt2800usb - usb host:
ID 7392:7710 Edimax Technology Co., Ltd Edimax Wi-Fi
[ 68.126337] usb 1-2: new high-speed USB device number 17 using xhci_hcd mcu_wait_ resp retrying mcu_wait_ resp retrying mcu_wait_ resp retrying mcu_wait_ resp retrying mcu_wait_ resp retrying mcu_wait_ resp timed out
[ 68.181565] usb 1-2: New USB device found, idVendor=7392, idProduct=7710, bcdDevice= 0.00
[ 68.181568] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 68.181571] usb 1-2: Product: Edimax Wi-Fi
[ 68.181573] usb 1-2: Manufacturer: MediaTek
[ 68.181575] usb 1-2: SerialNumber: 1.0
[ 68.398420] usb 1-2: reset high-speed USB device number 17 using xhci_hcd
[ 68.446602] mt7601u 1-2:1.0: ASIC revision: 76010001 MAC revision: 76010500
[ 68.473662] mt7601u 1-2:1.0: Firmware Version: 0.1.00 Build: 7640 Build time: 201302052146____
[ 69.461098] mt7601u 1-2:1.0: EEPROM ver:0d fae:00
[ 69.472103] mt7601u 1-2:1.0: EEPROM country region 01 (channels 1-13)
[ 70.152995] mt7601u 1-2:1.0: Warning: mt7601u_
[ 70.472567] mt7601u 1-2:1.0: Warning: mt7601u_
[ 70.792966] mt7601u 1-2:1.0: Warning: mt7601u_
[ 71.112927] mt7601u 1-2:1.0: Warning: mt7601u_
[ 71.432909] mt7601u 1-2:1.0: Warning: mt7601u_
[ 71.432913] mt7601u 1-2:1.0: Error: mt7601u_
[ 71.433388] xhci_hcd 0000:03:00.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.
[ 71.435442] xhci_hcd 0000:03:00.0: WARN Set TR Deq Ptr cmd failed due to incorrect slot or ep state.
[ 71.582930] mt7601u 1-2:1.0: Vendor request req:07 off:0080 failed:-71
[ 71.729217] mt7601u 1-2:1.0: Vendor request req:02 off:0080 failed:-71
After the device is unplugged, dmesg log is spammed:
[ 363.312561] mt7601u 1-2:1.0: Vendor request req:07 off:0730 failed:-71
[ 363.479252] mt7601u 1-2:1.0: Vendor request req:07 off:0730 failed:-71
[ 363.649243] mt7601u 1-2:1.0: Vendor request req:07 off:0730 failed:-71
...
[ 380.069000] mt7601u 1-2:1.0: Vendor request req:02 off:0080 failed:-71
[ 380.069055] mt7601u: probe of 1-2:1.0 failed with error -110
[ 380.069272] usb 1-2: USB disconnect, device number 90
@Bernhard: I can confirm missing Error message on some devices, too. The devices are not working.