Are these books outdated?

[Stefan Wahren]

Am 14.08.2016 um 21:48 schrieb Andrey Skvortsov:
> On 11 Aug, Stefan Wahren wrote:
>> Am 11.08.2016 um 05:52 schrieb Raul Piper:
>>> Pdfdocs !!
>>> Hmm that would be a nice Idea to collate all the Documentation of the
>>> kernel  into the pdfs and make a book out of it for any kernel version
>>> we want !
>>> Thanks !
>>
>> There is a german book [1] which handles Kernel 4.x and device trees.
>> But i don't know if any translation is planned.
>
> Thank you for the link and information about book.
> Unfortunately after your message, public access to the book was
> removed on the site.
> It's pity that I've not downloaded Latex source
> code of the last edition, when they were available.

That's strange. I provided the link because of the 4nd edition of the 
book. The online version was about the 3rd edition which handled Kernel 2.6.

>
>> [1] - https://ezs.kr.hsnr.de/TreiberBuch/
>