AP stop with mt76x2u 1-1.3:1.0: error: mt76x02u_mcu_wait_resp failed with -145

Summary

Probably related to this issue. USB adapter is unstable crashing after light sustained load. Created new issues as getting error -145 instead of -110 from the related ticket.

[ 5708.363686] mt76x2u 1-1.3:1.0: error: mt76x02u_mcu_wait_resp failed with -145

Configuration

Hardware: GL.inet GL-E750
USB Adapter: Alfa AWUS036ACM

Linux Kernel

root@pd-gl-e750:~# uname -a
Linux pd-gl-e750 5.10.146 #0 Fri Oct 14 22:44:41 2022 mips GNU/Linux

Firmware Build

root@pd-gl-e750:~# cat /etc/banner
  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt 22.03.2, r19803-9a599fee93
 -----------------------------------------------------

Custom Firmware Packages

ath10k-firmware-qca9887-ct base-files busybox ca-bundle dnsmasq dropbear firewall4 fstools kmod-ath10k-ct kmod-ath9k kmod-gpio-button-hotplug kmod-nft-offload kmod-usb2 libc libgcc libustream-wolfssl logd mtd netifd nftables odhcp6c odhcpd-ipv6only opkg ppp ppp-mod-pppoe procd procd-seccomp procd-ujail swconfig uboot-envtools uci uclient-fetch urandom-seed urngd wpad-basic-wolfssl kmod-usb-net-asix kmod-usb-storage kmod-mt76x2u kmod-usb-serial kmod-usb-net kmod-usb-serial-wwan kmod-usb-serial-option kmod-usb-net-qmi-wwan modemmanager mwan3 travelmate block-mount kmod-fs-ext4 e2fsprogs fdisk luci luci-ssl luci-proto-modemmanager luci-app-mwan3 luci-app-travelmate lscpu usbutils pciutils

Kernel Modules

root@pd-gl-e750:~# lsmod | grep mt
cfg80211              285808  9 ath9k,ath9k_common,ath10k_core,ath,mt76x2_common,mt76x02_usb,mt76x02_lib,mt76,mac80211
mac80211              523616  6 mt76x2u,ath9k,ath10k_core,mt76x02_usb,mt76x02_lib,mt76
mt76                   44320  5 mt76x2u,mt76x2_common,mt76x02_usb,mt76x02_lib,mt76_usb
mt76_usb               11824  2 mt76x2u,mt76x02_usb
mt76x02_lib            40640  3 mt76x2u,mt76x2_common,mt76x02_usb
mt76x02_usb             5952  1 mt76x2u
mt76x2_common          12192  1 mt76x2u
mt76x2u                10496  0 
usbcore               146464 15 mt76x2u,option,usb_wwan,qmi_wwan,mt76x02_usb,mt76_usb,asix,usbserial,usbnet,cdc_wdm,usb_storage,ehci_platform,ehci_fsl,ehci_hcd

USB information

root@pd-gl-e750:~# lsusb -t
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-platform/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=, Driver=hub/4p, 480M
        |__ Port 1: Dev 3, If 0, Class=, Driver=usb-storage, 480M
        |__ Port 2: Dev 5, If 0, Class=, Driver=option, 480M
        |__ Port 2: Dev 5, If 3, Class=, Driver=option, 480M
        |__ Port 2: Dev 5, If 1, Class=, Driver=option, 480M
        |__ Port 2: Dev 5, If 4, Class=, Driver=qmi_wwan, 480M
        |__ Port 2: Dev 5, If 2, Class=, Driver=option, 480M
        |__ Port 3: Dev 6, If 0, Class=, Driver=mt76x2u, 480M

Logs

root@pd-gl-e750:~# dmesg | grep mt
[    1.531468] UBI: auto-attach mtd0
[    1.534936] ubi0: attaching mtd0
[    2.999945] ubi0: attached mtd0 (name "ubi", size 128 MiB)
[   28.938907] mt76x2u 1-1.3:1.0: ASIC revision: 76120044
[   28.991702] mt76x2u 1-1.3:1.0: ROM patch build: 20141115060606a
[   29.183350] mt76x2u 1-1.3:1.0: Firmware Version: 0.0.00
[   29.188768] mt76x2u 1-1.3:1.0: Build: 1
[   29.192778] mt76x2u 1-1.3:1.0: Build Time: 201607111443____
[   30.181487] usbcore: registered new interface driver mt76x2u
[   36.324317] ath10k_pci 0000:00:00.0: firmware ver 10.1-ct-87-__fW-022-ecad3248 api 2 features wmi-10.x,has-wmi-mgmt-tx,mfp,txstatus-noack,wmi-10.x-CT,ratemask-CT,txrate-CT,get-temp-CT,tx-rc-CT,cust-stats-CT,retry-gt2-CT,txrate2-CT,beacon-cb-CT,wmi-block-ack-CT crc32 61a92df5
[ 5705.723744] mt76x2u 1-1.3:1.0: error: mt76x02u_mcu_wait_resp failed with -145
[ 5708.363686] mt76x2u 1-1.3:1.0: error: mt76x02u_mcu_wait_resp failed with -145
[ 5781.046306] mt76x2u 1-1.3:1.0: MAC RX failed to stop
[ 5804.125568] mt76x2u 1-1.3:1.0: MAC RX failed to stop
[ 5807.918942] mt76x2u 1-1.3:1.0: timed out waiting for pending tx
[ 5823.215425] mt76x2u 1-1.3:1.0: MAC RX failed to stop
[ 5887.523547] mt76x2u 1-1.3:1.0: MAC RX failed to stop
[ 5905.643170] mt76x2u 1-1.3:1.0: MAC RX failed to stop
[ 6037.961288] mt76x2u 1-1.3:1.0: MAC RX failed to stop
[ 6056.081286] mt76x2u 1-1.3:1.0: MAC RX failed to stop

Troubleshooting Steps to recover device

Reload kernel module results in same error -145

rmmod mt76x2u with associated dmesg logs

[39861.314326] usbcore: deregistering interface driver mt76x2u

modprobe mt76x2u with associated dmesg logs

[39883.709212] usb 1-1.3: reset high-speed USB device number 4 using ehci-platform
[39883.869665] mt76x2u 1-1.3:1.0: ASIC revision: 76120044
[39883.926200] mt76x2u 1-1.3:1.0: ROM patch build: 20141115060606a
[39885.012350] mt76x2u 1-1.3:1.0: firmware upload failed: -145
[39887.174039] mt76x2u: probe of 1-1.3:1.0 failed with error -5
[39887.180359] usbcore: registered new interface driver mt76x2u

Apply sg disable patch, reload kernel modules and replug adapter

Apply sg disable path per comment

echo 1 > /sys/module/mt76_usb/parameters/disable_usb_sg

Unload kernel module rmmod mt76x2u with associated dmesg logs

[39916.206640] usbcore: deregistering interface driver mt76x2u

Replug adapter and load kernel modulemodprobe mt76x2u with associated dmesg logs

[39922.738512] usb 1-1.3: USB disconnect, device number 4
[39924.828741] usb 1-1.3: new high-speed USB device number 6 using ehci-platform
[39934.398660] usb 1-1.3: reset high-speed USB device number 6 using ehci-platform
[39934.551022] mt76x2u 1-1.3:1.0: ASIC revision: 76120044
[39934.613956] mt76x2u 1-1.3:1.0: ROM patch build: 20141115060606a
[39934.781970] mt76x2u 1-1.3:1.0: Firmware Version: 0.0.00
[39934.787493] mt76x2u 1-1.3:1.0: Build: 1
[39934.791530] mt76x2u 1-1.3:1.0: Build Time: 201607111443____
[39935.715118] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht'
[39935.749301] usbcore: registered new interface driver mt76x2u

The above seems to resolve the issue for now, will check in about stability

Start with the mt76x02u_mcu_wait_resp errors and the mt76_usb disable_usb_sg parameter described in the report. Reproduce the failure using the listed GL-E750, AWUS036ACM, kernel, firmware, and dmesg details, then compare behavior after reloading the module and replugging the adapter. Done means the cause of the -145 failure is identified and the adapter remains stable without relying on the workaround.