linux-kernel - Re: [PATCH v2 1/3] backlight: introduce backlight_device

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Message-ID: <1379682070.9746.4.camel@oban>
Date:	Fri, 20 Sep 2013 15:01:10 +0200
From:	Yves-Alexis Perez <corsac@...ian.org>
To:	Aaron Lu <aaron.lu@...el.com>
Cc:	linux-acpi@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Daniel Vetter <daniel@...ll.ch>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Seth Forshee <seth.forshee@...onical.com>,
	Lee Chun-Yi <joeyli.kernel@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Igor Gnatenko <i.gnatenko.brain@...il.com>,
	Felipe Contreras <felipe.contreras@...il.com>,
	Henrique de Moraes Holschuh <ibm-acpi@....eng.br>,
	Jani Nikula <jani.nikula@...ux.intel.com>
Subject: Re: [PATCH v2 1/3] backlight: introduce backlight_device_registered

On mar., 2013-09-17 at 17:23 +0800, Aaron Lu wrote:
> Introduce a new API for modules to query if a specific type of
> backlight
> device has been registered. This is useful for some backlight device
> provider module(e.g. ACPI video) to know if a native control
> interface(e.g. the interface created by i915) is available and then do
> things accordingly(e.g. avoid register its own on Win8 systems).
> 
> Signed-off-by: Aaron Lu <aaron.lu@...el.com>
Tested-by: Yves-Alexis Perez <corsac@...ian.org>
-- 
Yves-Alexis

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