mt76x2u: could not get hardware semaphore for ROM PATCH

Hi,
we have a device with a HC-M7662BU1.

When we switch off and on the device, the driver is correctly loaded and we can use the device properly.
Then, if we issue a reboot, it will work fine but only one time. For any subsequent reboot, an error will happen and the Wi-Fi interface will not be recognized.

Initial boot or reboot:

[ 10.063318] usb 2-1: reset high-speed USB device number 2 using ehci-platform
[ 10.097507] mt76x2u: probe of 2-1:1.0 failed with error -22
[ 10.235282] usb 2-1: reset high-speed USB device number 2 using ehci-platform
[ 10.269454] mt76x2u: probe of 2-1:1.1 failed with error -22
[ 10.407280] usb 2-1: reset high-speed USB device number 2 using ehci-platform
[ 10.441657] mt76x2u 2-1:1.2: ASIC revision: 76620044
[ 10.502163] mt76x2u 2-1:1.2: ROM patch build: 20141115060606a
[ 10.696531] mt76x2u 2-1:1.2: Firmware Version: 0.0.00
[ 10.701602] mt76x2u 2-1:1.2: Build: 1
[ 10.705271] mt76x2u 2-1:1.2: Build Time: 201507311614____
[ 10.922154] mt76x2u 2-1:1.2: error: MCU resp evt:9 seq:1-0
[ 10.927778] mt76x2u 2-1:1.2: error: MCU resp evt:9 seq:1-0
[ 10.933402] mt76x2u 2-1:1.2: error: MCU resp evt:9 seq:1-0
[ 11.550495] usbcore: registered new interface driver mt76x2u

2+ reboot:

[ 10.075449] usb 2-1: reset high-speed USB device number 2 using ehci-platform
[ 10.109687] mt76x2u: probe of 2-1:1.0 failed with error -22
[ 10.247413] usb 2-1: reset high-speed USB device number 2 using ehci-platform
[ 10.281503] mt76x2u: probe of 2-1:1.1 failed with error -22
[ 10.419410] usb 2-1: reset high-speed USB device number 2 using ehci-platform
[ 10.453955] mt76x2u 2-1:1.2: ASIC revision: 76620044
[ 11.744222] mt76x2u 2-1:1.2: could not get hardware semaphore for ROM PATCH
[ 12.781663] mt76x2u: probe of 2-1:1.2 failed with error -110
[ 12.787463] usbcore: registered new interface driver mt76x2u

We also tried with a netgear A6210 dongle, and had no issue

[ 10.124718] mt76x2u 3-1:1.0: ASIC revision: 76120044
[ 10.161951] mt76x2u 3-1:1.0: ROM patch build: 20141115060606a
[ 10.299100] mt76x2u 3-1:1.0: Firmware Version: 0.0.00
[ 10.304161] mt76x2u 3-1:1.0: Build: 1
[ 10.307833] mt76x2u 3-1:1.0: Build Time: 201507311614____
[ 11.096936] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 11.098759] usbcore: registered new interface driver mt76x2u

Start at the mt76x2u probe path and the ROM PATCH hardware-semaphore error shown in the logs. Reproduce repeated reboots with the HC-M7662BU1, compare the successful and failing initialization sequences, and verify that the device initializes reliably after subsequent reboots without the semaphore or probe errors.