On Wed, Feb 24, 2016 at 12:37:40AM -0500, Valdis.Kletnieks at vt.edu wrote:

On Wed, 24 Feb 2016 12:57:42 +0800, Navy Cheng said:

quoted

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?

No output. I use *dmesg* to find more information:

[  572.915977] dgnc: module is from the staging directory, the quality is
   	       unknown, you have been warned.

quoted

    sudo lsmod | grep dgnc

Again, what messages?

Output:
	dgnc                   65536  0

quoted

    sudo rmmod ./dgnc

Again, what happened?

No output. After *dmesg*, no more info in the ring buffer.

quoted

    sudo insmod ./dgnc.ko

And here?

No output. 

quoted

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?

The GUI stop work and any key in my laptop is not work. The *Caps Lock lamp*
in the keyboard is flashing.

quoted

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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