From mboxrd@z Thu Jan 1 00:00:00 1970 From: Randy Dunlap Subject: Re: linux-next: Tree for October 28 (acpi_video) Date: Sun, 31 Oct 2010 20:09:22 -0700 Message-ID: <4CCE2F62.7050202@oracle.com> References: <20101028142031.5a4d6612.sfr@canb.auug.org.au> <20101029090131.68709a71.randy.dunlap@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org To: Len Brown Cc: Stephen Rothwell , linux-acpi@vger.kernel.org, linux-next@vger.kernel.org, LKML , Lee@kernel.org, Chun-Yi , Dave Airlie , Zhang Rui List-Id: linux-next.vger.kernel.org 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 && && > 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 > 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 > Signed-off-by: Dave Airlie > I think that it needs this patch (from 2010-OCT-13): http://lkml.org/lkml/2010/10/13/270 -- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***