added online version of linux device drivers to reference list

diff --git a/Documentation/comedi/Hardware_Driver.HOWTO b/Documentation/comedi/Hardware_Driver.HOWTO
index 4e7a196639f29f616b98e8c7d89714fb3b95eda5..ba313c20cd4e3327cb7ed55e12f1e69f70ac90ea 100644 (file)
--- a/Documentation/comedi/Hardware_Driver.HOWTO
+++ b/Documentation/comedi/Hardware_Driver.HOWTO
@@ -38,6 +38,9 @@ covered in other documents, e.g.
 - Kernel Hacker's Guide
   http://www.linuxdoc.org/LDP/khg/HyperNews/get/khg.html
 
+- Linux Device Drivers, 2nd Edition
+  http://www.xml.com/ldd/chapter/book/index.html
+
 - The Linux source