This is the gold mine. Several GitHub users have created markdown-based wikis or GitBooks titled "Linux Device Drivers 4th Edition." These are not official PDFs, but they aggregate commits and changes from kernel maintainers. Look for repositories with high star counts containing terms like:
If you're interested in purchasing a copy of the book or accessing the official resources, you can try: Linux Device Drivers 4th Edition Pdf Github
The 4th edition of Linux Device Drivers is not a file you download. It exists in the commits of torvalds/linux , the pull requests of GitHub, and the Stack Overflow answers of kernel maintainers. This is the gold mine
Use this tool alongside GitHub code. If a function in a community repository looks unfamiliar, look it up on Bootlin to see its definition and usage across different kernel versions. It exists in the commits of torvalds/linux ,