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From:   Rui Salvaterra <rsalvaterra@gmail.com>
Date:   Fri, 30 Apr 2021 14:32:24 +0100
Message-ID: <CALjTZvbS5RtarO6sZUTg__VqB+MmJMpMz9k6CwZ9u8dq68u23w@mail.gmail.com>
Subject: [BUG?]: mt7601u broken on 5.12
To:     lorenzo@kernel.org
Cc:     kuba@kernel.org, stf_xl@wp.pl, linux-wireless@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

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