Thread-safety! What if two threads are using the driver simultaneously?
You can also avoid using the private data to store your actual device, which is a common choice if you need private data for something different. In that case you will need to retrieve the minor number in the scull_read routine. It will be something like that.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.