Unless  otherwise stated, the  source code distributed  with this bookcan   be  redistributed in source    or  binary form   so  long  as anacknowledgment  appears in derived source   files. The citation shouldlist  that the  code comes from  "Linux Device Drivers"  by AlessandroRubini,   published by   O'Reilly & Associates.  This    code is under copyright and  cannot be  included in any other book, publication,  oreducational product without permission from O'Reilly &  Associates. Nowarranty  is  attached; we  cannot take responsibility   for errors or fitness for use.There are  a  few exception to  this  licence, however:  a few sourcesherein    are  distributed  according   to   the  GNU   General PublicLicense. 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.cThe  files in ./pci and   ./v2.1/pci inherit the   GPL from the kernelsources, as  some of their code comes  straight from the kernel; theirbeing GPL'd doesn't  prevent you from writing  binary modules,  as thecode 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 betternot allow hiding code dealing  with memory management.  If you want touse  the  allocator  in a  binary-only module,   just compile it  as astandalone module and distribute its source.Note  that   although everything here  is  designed  to allow buildingbinary modules, I'm strongly against this practice. All software in myopinion should be  free (in the  sense  of freedom). Every Linux  usershould acknowledge the importance of the GPL and should use it for anynew software.Enjoy/alessandro