From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Sat, 18 Oct 2008 17:23:55 +0000 (-0300)
Subject: ACPI: thinkpad-acpi: Remove firmware backlight delays for Intel ACPI IGD OpRegion
X-Git-Tag: v2.6.28-rc1~26^2~11^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d64c81c4cea0a14e88fc76e2c845e4885e491754;p=pandora-kernel.git

ACPI: thinkpad-acpi: Remove firmware backlight delays for Intel ACPI IGD OpRegion

Based on analysis and a patch from Matthew Garrett <mjg59@srcf.ucam.org>.

Instruct the ThinkPad ACPI firmware to remove delays on the processing of
backlight brightness changes.  This method is present on ThinkPad
Vista-compatible BIOSes with standard ACPI backlight level control.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Yves-Alexis Perez <corsac@debian.org>
Signed-off-by: Len Brown <len.brown@intel.com>
---

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