[FS#1190] NETGEAR WNDR3800 USB LED trigger not work properly！

[LEDE Bugs]

The following task has a new comment added:

FS#1190 - NETGEAR WNDR3800 USB LED trigger not work properly！
User who did this - Florian Fainelli (ffainelli)

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I can confirm this happens on my Netgear WNDR4300 as well using kernel 4.4. Using a different type of trigger works fine though (e.g: netdev, timer etc.). It is not clear to me where the problem is coming from yet.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1190#comment3908