linux-kernel - Re: 2.6.36-rc8 -- drivers/built-in.o: In function `nouveau_acpi_edid': (.text+0xf7c04): undefined reference to `acpi_video_get

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Date:	Sun, 17 Oct 2010 09:18:09 +0200
From:	Sven Joachim <svenjoac@....de>
To:	Roland Dreier <rdreier@...co.com>
Cc:	Miles Lane <miles.lane@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Ben Skeggs <bskeggs@...hat.com>,
	Maarten Maathuis <madman2003@...il.com>
Subject: Re: 2.6.36-rc8 -- drivers/built-in.o: In function `nouveau_acpi_edid': (.text+0xf7c04): undefined reference to `acpi_video_get_edid'

On 2010-10-16 22:58 +0200, Roland Dreier wrote:

>  > drivers/built-in.o: In function `nouveau_acpi_edid':
>  > (.text+0xf7c04): undefined reference to `acpi_video_get_edid'
>  > make: *** [.tmp_vmlinux1] Error 1
>
> The problem is:
>
>  > CONFIG_ACPI=y
>  > CONFIG_ACPI_VIDEO=m
>
> but
>
>  > CONFIG_DRM_NOUVEAU=y
>
> So the built-in nouveau code tries to reference the modular acpi video
> code.

The nouveau tree has a fix for this already, in commit
4587d1cfa8b54ba3dd3095c3e6f12d02390494c6:

--8<---------------cut here---------------start------------->8---
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index d2d2804..72730e9 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -10,6 +10,7 @@ config DRM_NOUVEAU
 	select FB
 	select FRAMEBUFFER_CONSOLE if !EMBEDDED
 	select FB_BACKLIGHT if DRM_NOUVEAU_BACKLIGHT
+	select ACPI_VIDEO if ACPI
 	help
 	  Choose this option for open-source nVidia support.
 
--8<---------------cut here---------------end--------------->8---

Maybe this should be cherry-picked for 2.6.36.

Sven
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