[FS#1362] kernel hangs unexpectedly on mt7621

[LEDE Bugs]

The following task has a new comment added:

FS#1362 - kernel hangs unexpectedly on mt7621
User who did this - easyteacher (easyteacher)

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I guess it should be fixed. The problem was likely to be related to the old mt76 driver.
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1362#comment4729