2021-04-30 13:33:32

by Rui Salvaterra

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Subject: [BUG?]: mt7601u broken on 5.12

Hi, Lorenzo,

I'm having issues with my MT7601U dongles, they're not working at all.
I'm seeing this on current 5.12 (it's cyclic, loops after the USB
disconnect):

[ 660.810386] usb 1-7: new high-speed USB device number 119 using ehci-pci
[ 661.031390] usb 1-7: New USB device found, idVendor=148f,
idProduct=7601, bcdDevice= 0.00
[ 661.031400] usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 661.031404] usb 1-7: Product: 802.11 n WLAN
[ 661.031408] usb 1-7: Manufacturer: MediaTek
[ 661.031411] usb 1-7: SerialNumber: 1.0
[ 661.200379] usb 1-7: reset high-speed USB device number 119 using ehci-pci
[ 661.403137] mt7601u 1-7:1.0: ASIC revision: 76010001 MAC revision: 76010500
[ 661.404566] mt7601u 1-7:1.0: Firmware Version: 0.1.00 Build: 7640
Build time: 201302052146____
[ 661.828765] mt7601u 1-7:1.0: EEPROM ver:0d fae:00
[ 662.005518] mt7601u 1-7:1.0: Error: MCU resp urb failed:-71
[ 662.005525] mt7601u 1-7:1.0: Error: MCU resp evt:0 seq:5-4!
[ 662.010015] mt7601u 1-7:1.0: Error: MCU resp urb failed:-71
[ 662.010020] mt7601u 1-7:1.0: Error: MCU resp evt:0 seq:5-4!
[ 662.014269] mt7601u 1-7:1.0: Error: MCU resp urb failed:-71
[ 662.014275] mt7601u 1-7:1.0: Error: MCU resp evt:0 seq:5-4!
[ 662.018516] mt7601u 1-7:1.0: Error: MCU resp urb failed:-71
[ 662.018521] mt7601u 1-7:1.0: Error: MCU resp evt:0 seq:5-4!
[ 662.022768] mt7601u 1-7:1.0: Error: MCU resp urb failed:-71
[ 662.022775] mt7601u 1-7:1.0: Error: MCU resp evt:0 seq:5-4!
[ 662.022779] mt7601u 1-7:1.0: Error: mt7601u_mcu_wait_resp timed out
[ 662.350350] mt7601u 1-7:1.0: Vendor request req:07 off:0080 failed:-71
[ 662.650344] mt7601u 1-7:1.0: Vendor request req:02 off:0080 failed:-71
[ 662.950339] mt7601u 1-7:1.0: Vendor request req:02 off:0080 failed:-71
[ 662.950389] mt7601u: probe of 1-7:1.0 failed with error -110
[ 662.950850] usb 1-7: USB disconnect, device number 119

Any idea of a possible cause?

Thanks,
Rui