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

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Message-ID: <1331795799.3718.7.camel@mattotaupa>
Date:	Thu, 15 Mar 2012 08:16:39 +0100
From:	Paul Menzel <paulepanter@...rs.sourceforge.net>
To:	Keith Packard <keithp@...thp.com>
Cc:	Carsten Emde <C.Emde@...dl.org>, David Airlie <airlied@...ux.ie>,
	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	LKML <linux-kernel@...r.kernel.org>,
	DRI <dri-devel@...ts.freedesktop.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [V2 PATCH 2/2] drivers-gpu-drm-i915-invert-backlight-brightness

Am Mittwoch, den 14.03.2012, 19:42 -0700 schrieb Keith Packard:
> <#part sign=pgpmime>

Notmuch sometimes seems to add that line. Is that a bug?

> 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, do you mean adding the quirk additionally in a separate patch?
Having that module option would ease testing the workaround without
needing to build a custom Linux kernel with a quirk added.


Thanks,

Paul



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