linux-kernel - Re: [PATCH 03/15] samsung-laptop: don't handle backlight if handled by acpi/video

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Date:	Tue, 22 Nov 2011 14:16:33 -0800
From:	Greg KH <gregkh@...e.de>
To:	Corentin Chary <corentincj@...aif.net>
Cc:	platform-driver-x86@...r.kernel.org,
	Matthew Garrett <mjg@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/15] samsung-laptop: don't handle backlight if handled
 by acpi/video

On Tue, Nov 22, 2011 at 11:02:34PM +0100, Corentin Chary wrote:
> samsung-laptop is not at all related to ACPI, but since this interface
> is not documented at all, and the driver has to use it at load to
> understand how it works on the laptop, I think it's a good idea to
> disable it if a better solution is available.

I wish this would work, but on the machine that I had, there was a valid
ACPI table for the video device, yet I was told to "ignore it, it
doesn't work and use the sabi interface instead", so this patch would
break that machine :(

We might want to trigger off of the machine type for this kind of
thing, that's the only way I can see this working properly.

So, sorry, I can't approve this patch.

greg k-h
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