From: Seth Forshee <seth.forshee@canonical.com>
Date: Thu, 19 Apr 2012 16:23:50 +0000 (-0500)
Subject: toshiba_acpi: Only register backlight device when interface is read/write
X-Git-Tag: v3.5-rc1~9^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62cce7526629e164513d3c67a06845953910f818;p=pandora-kernel.git

toshiba_acpi: Only register backlight device when interface is read/write

Currently the backlight device is registered unconditionally, but many
(probably most) Toshibas either don't support HCI_LCD_BRIGHTNESS or only
support reading from it. This patch adds a test of HCI_LCD_BRIGHTNESS
during initialization and only registers the backlight device if this
interface supports both reads and writes.

Cc: Akio Idehara <zbe64533@gmail.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
---

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