No doubt, device drivers are a vast and interesting topic. Not only that, they are perhaps the most common use of the Loadable Kernel Module (LKM) framework that we have been using. Here, we shall introduce you to writing a few simple yet complete Linux character device drivers, within a class called misc; yes, that's short for miscellaneous. We wish to emphasize that this chapter is limited in its scope and coverage - here, we do not attempt to delve into the deep details regarding the Linux driver model and its many frameworks; instead, we refer you to several excellent books and tutorials on this topic via the Further reading section for this chapter. Our aim here is to quickly get you familiar ...
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