---------------------------
+What: CONFIG_ACPI_PROCFS_POWER
+When: 2.6.39
+Why: sysfs I/F for ACPI power devices, including AC and Battery,
+ has been working in upstream kenrel since 2.6.24, Sep 2007.
+ In 2.6.37, we make the sysfs I/F always built in and this option
+ disabled by default.
+ Remove this option and the ACPI power procfs interface in 2.6.39.
+Who: Zhang Rui <rui.zhang@intel.com>
+
+---------------------------
+
What: /proc/acpi/button
When: August 2007
Why: /proc/acpi/button has been replaced by events to the input layer
Who: Tejun Heo <tj@kernel.org>
----------------------------
+
+What: Legacy, non-standard chassis intrusion detection interface.
+When: June 2011
+Why: The adm9240, w83792d and w83793 hardware monitoring drivers have
+ legacy interfaces for chassis intrusion detection. A standard
+ interface has been added to each driver, so the legacy interface
+ can be removed.
+Who: Jean Delvare <khali@linux-fr.org>
+
+----------------------------