X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Fkernel%2Fold_slides%2F.git;a=blobdiff_plain;f=00.intro%2F00.intro.xml;h=d479935f53461455dfeda6dd33447d1b2cb4ea87;hp=6e34fbb1846e83b54f7a3b3deb4595b770d058c4;hb=9c1064e33b10a9ecb1e60b37e01423fa9f280f87;hpb=e68a87d9dcc7c81392d94ed7435f23f09ff89744

diff --git a/00.intro/00.intro.xml b/00.intro/00.intro.xml
index 6e34fbb..d479935 100644
--- a/00.intro/00.intro.xml
+++ b/00.intro/00.intro.xml
@@ -59,4 +59,18 @@ TODO: introduce a graphic with the number of lines of code.
 </foil>
 -->
 
+<foil>
+<title>Linux evolution</title>
+<para>
+Linux source code and interfaces have changed a lot in all these years. Some
+programs require the sysfs interface, for example. Some drivers may require new
+interfaces and not build on old linux versions. They may also use obsolete or
+replaced unexisting interfaces and not build on new linux versions.
+</para>
+<para>
+Better practice is to release the driver under GPLv2 or other compatible
+license and send it to mainline. And maintain it even after it's there.
+</para>
+</foil>
+
 </slides>