linux-kernel - Re: linux-next: Tree for October 28 (acpi

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Date:	Sun, 31 Oct 2010 20:09:22 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Len Brown <lenb@...nel.org>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-acpi@...r.kernel.org, linux-next@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>, Lee@...nel.org,
	Chun-Yi <joeyli.kernel@...il.com>,
	Dave Airlie <airlied@...hat.com>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: linux-next: Tree for October 28 (acpi_video)

On 10/29/10 11:18, Len Brown wrote:
>> drivers/built-in.o: In function `acpi_video_bus_put_one_device':
>> video.c:(.text+0x9d794): undefined reference to `backlight_device_unregister'
> 
> Invalid .config, as ACPI_VIDEO depends on BACKLIGHT_CLASS_DEVICE, which is not set.
> 
> This breakage is the infamous "select in Kconfig doesn't" bug,
> which has apparently claimed a new victim, STUB_POULSBO:
> 
> (STUB_POULSBO && HAS_IOMEM && PCI && ACPI || DRM_I915 && <choice> && 
> AGP_INTEL && ACPI || DRM_NOUVEAU && STAGING && !STAGING_EXCLUDE_BUILD && 
> DRM && PCI && ACPI) selects ACPI_VIDEO which has unmet direct dependencies 
> (ACPI && X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL && INPUT)
> 
> commit e26fd1199ebab0d469fc3e037da5932d382f0669
> Author: Lee, Chun-Yi <joeyli.kernel@...il.com>
> Date:   Wed Oct 20 13:51:19 2010 +0800
> 
>     gpu: Add Intel GMA500(Poulsbo) Stub Driver
>     
>     Currently, there have no GMA500(Poulsbo) native video driver to 
> support
>     intel opregion. So, use this stub driver to enable the acpi backlight
>     control sysfs entry files by requrest acpi_video_register.
>     
>     [airlied: fix warnings]
>     
>     Signed-off-by: Lee, Chun-Yi <jlee@...ell.com>
>     Signed-off-by: Dave Airlie <airlied@...hat.com>
> 

I think that it needs this patch (from 2010-OCT-13):
  http://lkml.org/lkml/2010/10/13/270

-- 
~Randy
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