From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Date: Tue, 10 Aug 2010 02:48:19 +0000 (-0300)
Subject: thinkpad-acpi: untangle ACPI/vendor backlight selection
X-Git-Tag: v2.6.36-rc2~47^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=217f09631a420295a9688e18aa4dbad1b385e56c;p=pandora-kernel.git

thinkpad-acpi: untangle ACPI/vendor backlight selection

acpi_video_backlight_support() already tells us if ACPI is handling
backlight control through the generic ACPI handle.  It is better to just
trust it.

While at it, adjust down a printk priority, and test earlier for
brightness_enable=0.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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