From: Zhang Rui <rui.zhang@intel.com>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>
Subject: Re: ACPI_VIDEO and BACKLIGHT_CLASS_DEVICE
Date: Mon, 15 Nov 2010 08:33:43 +0800 [thread overview]
Message-ID: <1289781223.8148.1805.camel@rui> (raw)
In-Reply-To: <20101112213601.GA19996@srcf.ucam.org>
On Sat, 2010-11-13 at 05:36 +0800, Matthew Garrett wrote:
> On Fri, Nov 12, 2010 at 04:26:15PM -0500, Alan Stern wrote:
>
> > Thanks for the information. Why does the help text for ACPI_VIDEO
> > mention defining the POST device or setting up a video output if the
> > driver doesn't do these things?
>
> The help text is documenting what the spec was intended to allow, rather
> than what it tends to in the real world...
>
At least the video driver is trying to do so right now, e.g. create
proc/sysfs I/F for output device switching, although they doesn't work
actually.
And I was preparing a patch to removing this stuff, together with an
update of the ACPI_VIDEO help text.
thanks,
rui
prev parent reply other threads:[~2010-11-15 0:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-10 22:02 ACPI_VIDEO and BACKLIGHT_CLASS_DEVICE Alan Stern
2010-11-12 2:07 ` Zhang Rui
2010-11-12 3:00 ` Alan Stern
2010-11-12 3:46 ` Matthew Garrett
2010-11-12 21:26 ` Alan Stern
2010-11-12 21:36 ` Matthew Garrett
2010-11-15 0:33 ` Zhang Rui [this message]
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