On Thu, 11 Oct 2018 14:42:56 +0400, o@xxxxxxxxxx said: > 10.10.2018, 19:36, "Carter Cheng" <cartercheng@xxxxxxxxx>: > > 2. Is there some good way to figure out how to update knowledge gained from > > this book to what is in the 4.x series of kernels? > I think all C code-based drivers will work on all Linux versions after > downloading kernel please checkout the staging/ folder. Nowhere close. Working on "all Linux versions" would imply a stable API. The internal kernel APIs change all the time - a non-toy driver written for a 2.6.10 kernel has little to no chance of working on 4.19 without updating to use the APIs presented by the 4.19 kernel. See Documentation/process/stable-api-nonsense.rst for the details.
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