From: Richard Purdie <rpurdie@rpsys.net>
Date: Sat, 10 Feb 2007 14:10:33 +0000 (+0000)
Subject: backlight: Rework backlight/fb interaction simplifying, lots
X-Git-Tag: v2.6.21-rc1~52^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37ce69a57ff217a4ca0871e9ee5aa58c052b7d86;p=pandora-kernel.git

backlight: Rework backlight/fb interaction simplifying, lots

fb_info->bl_mutex is badly thought out and the backlight class doesn't
need it if the framebuffer/backlight register/unregister order is
consistent, particularly after the backlight locking fixes.

Fix the drivers to use the order:

backlight_device_register()
register_framebuffer()
unregister_framebuffer()
backlight_device_unregister()

and turn bl_mutex into a lock for the bl_curve data only.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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