Re: ACPI_VIDEO and BACKLIGHT_CLASS_DEVICE

Zhang Rui
2010-11-15T00:32:12Z

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