---------------------------
+What: /proc/acpi/event
+When: February 2008
+Why: /proc/acpi/event has been replaced by events via the input layer
+ and netlink since 2.6.23.
+Who: Len Brown <len.brown@intel.com>
+
+---------------------------
+
What: Compaq touchscreen device emulation
When: Oct 2007
Files: drivers/input/tsdev.c