Tell about MODULE_LICENSE and taint.

diff --git a/01.hello/01.hello.xml b/01.hello/01.hello.xml
index b6b2969..b57177a 100644 (file)
--- a/01.hello/01.hello.xml
+++ b/01.hello/01.hello.xml
@@ -60,6 +60,16 @@ priority. There are macros, like <emphasis>KERN\_ALERT</emphasis> and
 </para>
 </foil>
 
+<foil>
+<title>License and taint</title>
+<para>
+<emphasis>MODULE\_LICENSE</emphasis> is highly recommended. A free software
+license should be used, otherwise the kernel is tainted. This indicates to
+developers that something has gone wrong, and some bug reports are ignored some
+times.
+</para>
+</foil>
+
 <foil>
 <title>Building</title>
 <para>