Is there a bug in dgnc.ko?

[Valdis.Kletnieks at vt.edu]

On Wed, 24 Feb 2016 12:57:42 +0800, Navy Cheng said:
> Hi,
>
> My kernel version is v4.4, and I have built drivers/staging/dgnc/dgnc.ko.
> I change to *dir*/drivers/staging/dgnc and do like this:
>
>     sudo insmod ./dgnc.ko

What output, if any, did this generate?

>     sudo lsmod | grep dgnc

Again, what messages?

>     sudo rmmod ./dgnc

Again, what happened?

>     sudo insmod ./dgnc.ko

And here?

> After I re-insmod the dgnc module, my laptop is breakdown.

What does "breakdown" mean?  Did it hang entirely? Did you get a message
in your dmesg output and/or on the console?  Other?

> My OS is debian 8.0. Is there a bug in dgnc.ko or something wrong with my
> OS or kernel. If there is a bug, How can I find it?

Start by providing enough info to see if there's a bug.
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