From 1b6521dc84f372dd92a96381fbeeebb01173d050 Mon Sep 17 00:00:00 2001
From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sun, 23 Sep 2007 11:39:03 -0300
Subject: [PATCH] ACPI: thinkpad-acpi: check version of hot key firmware

Check the HKEY firmware version (HKEY.MHKV handler), and refuse to load if
it is unknown.  Use this instead of the presence of HKEY.DHKV to detect hot
key mask capability.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
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