From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [i915] Kernel does not compile when set to use i915 kernel mode-setting per default (CONFIG_DRM_I915_KMS=y) Date: Mon, 18 May 2009 21:10:36 +0200 Message-ID: <1242673836.32543.1288.camel@laptop> References: <200905182101.06511.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from bombadil.infradead.org ([18.85.46.34]:44002 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752454AbZERTLF (ORCPT ); Mon, 18 May 2009 15:11:05 -0400 In-Reply-To: <200905182101.06511.rjw@sisk.pl> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J. Wysocki" Cc: ACPI Devel Maling List , Zorael , Len Brown , LKML On Mon, 2009-05-18 at 21:01 +0200, Rafael J. Wysocki wrote: > Adding CCs. > > On Monday 18 May 2009, you wrote: > > (First post, so please CC to zorael@gmail.com in case it doesn't automatically.) > > > > > > I'm trying to compile 2.6.30-rc6 to enable kernel mode-setting *per > > default*, for my Intel 945GME video chipset. Alas, when compiling, it > > halts with the following tidbit: > > > > ... > > LD .tmp_vmlinux1 > > drivers/built-in.o: In function `intel_opregion_free': > > /usr/src/linux/drivers/gpu/drm/i915/i915_opregion.c:422: undefined > > reference to `acpi_video_exit' > > drivers/built-in.o: In function `intel_opregion_init': > > /usr/src/linux/drivers/gpu/drm/i915/i915_opregion.c:393: undefined > > reference to `acpi_video_register' > > make[1]: *** [.tmp_vmlinux1] Error 1 > > make[1]: Leaving directory `/usr/src/linux-2.6.29' > > make: *** [debian/stamp/build/kernel] Error 2 > > > > > > grepping acpi_video_register recursively I see it's defined as an > > empty function in ./include/acpi/video.h, and as a more proper > > function in ./drivers/acpi/video.c. Does somehow setting it to use KMS > > per default via CONFIG_DRM_I915_KMS=y stop it from reading those > > files? > > > > I used to run with KMS by default in the early -30rc*s, but at some > > point (rc2?), it stopped compiling succesfully. If I don't enable it > > per default, it *does* compile, though I don't know how to explicitly > > enable it at boot-time. So I'm living without KMS for the time being. > > Woe. > > > > Anything obvious I'm doing wrong? CONFIG_ACPI_VIDEO=y IIRC, Kconfig should be fixed, and I seem to remember seeing patch fly by.