From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753800AbaJASX6 (ORCPT ); Wed, 1 Oct 2014 14:23:58 -0400 Received: from casper.infradead.org ([85.118.1.10]:52322 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753745AbaJASX5 (ORCPT ); Wed, 1 Oct 2014 14:23:57 -0400 Message-ID: <542C46B3.2020901@infradead.org> Date: Wed, 01 Oct 2014 11:23:47 -0700 From: Randy Dunlap User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.0 MIME-Version: 1.0 To: Jani Nikula , Jim Davis , Stephen Rothwell , linux-next , linux-kernel , David Airlie , daniel.vetter@intel.com, intel-gfx@lists.freedesktop.org, dri-devel Subject: Re: randconfig build error with next-20141001, in drivers/gpu/drm/i915 References: <87fvf73c6g.fsf@intel.com> In-Reply-To: <87fvf73c6g.fsf@intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/01/14 10:57, Jani Nikula wrote: > On Wed, 01 Oct 2014, Jim Davis wrote: >> Building with the attached random configuration file, >> >> warning: (VIDEO_TIMBERDALE) selects TIMB_DMA which has unmet direct >> dependencies (DMADEVICES && MFD_TIMBERDALE) >> warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG >> which has unmet direct dependencies (USB_SUPPORT && USB && PM_RUNTIME) >> >> drivers/built-in.o: In function `intel_panel_setup_backlight': >> (.text+0x11855d): undefined reference to `backlight_device_register' >> drivers/built-in.o: In function `intel_panel_destroy_backlight': >> (.text+0x118624): undefined reference to `backlight_device_unregister' >> make: *** [vmlinux] Error 1 > > It's the combination: > >> CONFIG_DRM_I915=y >> CONFIG_BACKLIGHT_CLASS_DEVICE=m > > Not sure what the Kconfig magic spell needs to be when we don't want to > depend on CONFIG_BACKLIGHT_CLASS_DEVICE but we'll use it if it's enabled > (y or m). Something like: depends on BACKLIGHT_CLASS_DEVICE || BACKLIGHT_CLASS_DEVICE=n is what we usually use. -- ~Randy