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The stage is going to contain: 1. How to register the driver with the kernel. I will also talk about what is the difference between registering a driver and loading or inserting a driver. 2. How to call registered functions 3. How to access device file from user space

When I was learning Linux device drivers I faced a lot of challenges. The reason was I didn't find any article which talks about device drivers from lehman point of view. The article I have written here is for people who are from different operating system backgrounds or from different technology altogether. I have divided the article in 5 stages and every next stage will be the superset of the next stage.