license
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- Unless otherwise stated, the source code distributed with this book
- can be redistributed in source or binary form so long as an
- acknowledgment appears in derived source files. The citation should
- list that the code comes from "Linux Device Drivers" by Alessandro
- Rubini, published by O'Reilly & Associates. This code is under
- copyright and cannot be included in any other book, publication, or
- educational product without permission from O'Reilly & Associates. No
- warranty is attached; we cannot take responsibility for errors or
- fitness for use.
- There are a few exception to this licence, however: a few sources
- herein are distributed according to the GNU General Public
- License. You'll find a copy of the license in /usr/src/linux/COPYING,
- and in other places in your filesystem. The affected source files are:
- pci/pcidata.c
- pci/pciregions.c
- v2.1/pci/pcidata.c
- v2.1/pci/pciregions.c
- v2.1/misc-modules/allocator.c
- The files in ./pci and ./v2.1/pci inherit the GPL from the kernel
- sources, as some of their code comes straight from the kernel; their
- being GPL'd doesn't prevent you from writing binary modules, as the
- code in the pci* modules isn't meant to be included in custom drivers,
- the modules are just standalone probing tools.
- The allocator, on the other hand, is completely mine, but I'd better
- not allow hiding code dealing with memory management. If you want to
- use the allocator in a binary-only module, just compile it as a
- standalone module and distribute its source.
- Note that although everything here is designed to allow building
- binary modules, I'm strongly against this practice. All software in my
- opinion should be free (in the sense of freedom). Every Linux user
- should acknowledge the importance of the GPL and should use it for any
- new software.
- Enjoy
- /alessandro