On Tue, Feb 23, 2016 at 09:43:56PM -0800, Greg KH wrote:
On Wed, Feb 24, 2016 at 12:57:42PM +0800, Navy Cheng wrote:
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
Do you have the hardware that this driver controls?
I'm not sure. My laptop is Dell Inspiron 14R - 5437 and I don't know if there is the right hardware. I often don't know about what a driver is used for in drivers/staging/. Is there any good way to know the function of a driver or module?
sudo lsmod | grep dgnc
Does that show anything?
Output: dgnc 65536 0
sudo rmmod ./dgnc sudo insmod ./dgnc.ko
After I re-insmod the dgnc module, my laptop is breakdown.
Then there's a bug to fix in the driver, it must not clean up everything properly. Based on a quick read of it, there is lots of things that need to be fixed in it, that's why it is in staging. If you are interested, I would suggest fixing this issue would be a great start.
I'm very glad to get your advice to fix this issue. As a kernelnewbies, I have sent two patches about code cleaning to you, and they are merged to the kernel tree. I realy interested to fix this bug to improve my understanding of the kerenl. Thank you.