[FS#896] mt7620 - dropping frames (WiFi)

[LEDE Bugs]

The following task has a new comment added:

FS#896 - mt7620 - dropping frames (WiFi)
User who did this - Cjcr (Cjcr)

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Daniel Golle:

I tested last version of the staging trunk "mac80211: rt2x00: fix rt2800 queue management" doing the "git clone https://git.lede-project.org/lede/dangole/staging.git" and compiling it. The result it is that it hangs very fast and stop working but the tx queue 2 issue doens't appear this time in the logs but the result is the same. Need to restart device to make it working again.

```
Model | Nexx WT3020 (8M)
Versión del firmware | LEDE Reboot SNAPSHOT r5049-e53bdcb / LuCI Master (git-17.289.53761-19f30d0)
Versión del Kernel | 4.9.54
```

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=896#comment3621