From 9c1064e33b10a9ecb1e60b37e01423fa9f280f87 Mon Sep 17 00:00:00 2001
From: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Date: Sat, 5 Dec 2009 15:05:28 -0200
Subject: [PATCH] Linux interfaces evolution.

---
 00.intro/00.intro.xml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

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>
-- 
2.20.1