From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFE85C47096 for ; Thu, 3 Jun 2021 19:54:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A57F4613D7 for ; Thu, 3 Jun 2021 19:54:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229702AbhFCT4C (ORCPT ); Thu, 3 Jun 2021 15:56:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:36044 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229576AbhFCT4B (ORCPT ); Thu, 3 Jun 2021 15:56:01 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E280F6140B; Thu, 3 Jun 2021 19:54:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622750056; bh=A8bTRZWGyUBja/MSUQ29VA/mAZj6QtYjbvJCbANIqsE=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=lfvGW1xaIASaWdfnsj8Xa660kIIT0mmbK6felqgEx4EDG7tPnuUtWGLq9bZeqboYv jFvKEAaYpYW6PQOCOemYaLD6rVqaUJmOPXUycexgYypJfAlqP1xhsXpPhj2AD6fGgE iOAZbfFS2LGvC0fw2keWywTtHxmEkVsSa5/RR0djNImU9X2aZtCSVY5pViIUIC+7MU AYBLRvSSIkgyKad41421ycs7ejiZ1pdWOJMQJYtt6D8qItdbbJI89CpbkYfsaKPBLb mGpj8e8CkhwtWk0dhrRb/AiSG6CcvKzb6zYq4JfvZ2Zvbzw+RRp0UHjrjQ6u3Mkr6i XrlU86O1/zRgg== Received: by mail-ej1-f51.google.com with SMTP id ho18so31006ejc.8; Thu, 03 Jun 2021 12:54:16 -0700 (PDT) X-Gm-Message-State: AOAM530rYgqkTinWhdF8evwklIuiAH8n/hHsIFY8sI/8En2vNX1hh5vf +Jf4QmA1EAHrvK6STo0IO6AR143rEtEmJ1V3fQ== X-Google-Smtp-Source: ABdhPJwDQD3xcAB0EXKWI0UDWW+ahHSVny9rQ0wOAWpa2cEgFyxpNPLRRrZrFwuDL+b/HEK8on4d0VTBOUxATJD7qJU= X-Received: by 2002:a17:906:fa13:: with SMTP id lo19mr895806ejb.468.1622750055293; Thu, 03 Jun 2021 12:54:15 -0700 (PDT) MIME-Version: 1.0 References: <20210602215252.695994-1-keescook@chromium.org> <20210602215252.695994-4-keescook@chromium.org> In-Reply-To: From: Rob Herring Date: Thu, 3 Jun 2021 14:54:03 -0500 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 3/3] drm/pl111: depend on CONFIG_VEXPRESS_CONFIG To: Kees Cook Cc: Dave Airlie , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Arnd Bergmann , kernel test robot , Sai Prakash Ranjan , Emma Anholt , Rob Clark , Sean Paul , Linus Walleij , Sam Ravnborg , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Thu, Jun 3, 2021 at 1:42 PM Rob Herring wrote: > > On Wed, Jun 2, 2021 at 4:53 PM Kees Cook wrote: > > > > Avoid randconfig build failures by requiring VEXPRESS_CONFIG: > > > > aarch64-linux-gnu-ld: drivers/gpu/drm/pl111/pl111_versatile.o: in function `pl111_vexpress_clcd_init': > > pl111_versatile.c:(.text+0x220): undefined reference to `devm_regmap_init_vexpress_config' > > pl111_vexpress_clcd_init() starts with: > > if (!IS_ENABLED(CONFIG_VEXPRESS_CONFIG)) > return -ENODEV; > > Isn't that supposed to be enough to avoid an undefined reference? > > Making the whole file depend on VEXPRESS_CONFIG is not right either. > Not all platforms need it. Specifically, these defconfigs will break as they all use PL111 but don't need nor enable VEXPRESS_CONFIG: arch/arm/configs/integrator_defconfig:CONFIG_DRM_PL111=y arch/arm/configs/lpc18xx_defconfig:CONFIG_DRM_PL111=y arch/arm/configs/lpc32xx_defconfig:CONFIG_DRM_PL111=y arch/arm/configs/nhk8815_defconfig:CONFIG_DRM_PL111=y arch/arm/configs/realview_defconfig:CONFIG_DRM_PL111=y arch/arm/configs/spear3xx_defconfig:CONFIG_DRM_PL111=y arch/arm/configs/versatile_defconfig:CONFIG_DRM_PL111=y These defconfigs should all be failing with the same error, but don't from what I've tried nor have I seen any kernelci failures. Rob