linux-kernel - Re: [V2 PATCH 2/2] drivers-gpu-drm-i915-invert-backlight-brightness

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Date:	Wed, 14 Mar 2012 19:42:16 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Carsten Emde <C.Emde@...dl.org>, David Airlie <airlied@...ux.ie>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>,
	DRI <dri-devel@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [V2 PATCH 2/2] drivers-gpu-drm-i915-invert-backlight-brightness

<#part sign=pgpmime>
On Thu, 15 Mar 2012 00:35:46 +0100, Carsten Emde <C.Emde@...dl.org> wrote:

> This patch adds a module parameter to invert the backlight brightness
> value before writing and after reading which makes the affected notebook
> usable again.

You should add a quirk for this and set things up so that your machine
automatically gets the right value; when we find more machines that do
this, we can add them so that more people will get a system that 'just
works'.

-- 
keith.packard@...el.com
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