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[131.252.210.177]) by mx.google.com with ESMTPS id m203si11073554pfd.256.2021.10.11.06.57.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Oct 2021 06:57:00 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 131.252.210.177 as permitted sender) client-ip=131.252.210.177; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=PsQDz8tD; spf=pass (google.com: best guess record for domain of dri-devel-bounces@lists.freedesktop.org designates 131.252.210.177 as permitted sender) smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 372306E4C1; Mon, 11 Oct 2021 13:56:56 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0FBF66E4C1 for ; Mon, 11 Oct 2021 13:56:55 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 6610161050; Mon, 11 Oct 2021 13:56:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1633960614; bh=8rv+dLDodlxCHV1xPtmKJextlAab2I7uYALBnhUtHyE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PsQDz8tDSAIz5R945Z6n7JJly84g0EUJiEXJbtJlwlGfvOT4CyNF8G+nXsXrHIfqN R2D+R+b3yDBTFF1emLzmIAegPBxWwlKFob9gckKZDbN0EJoAiogcjaIgsWFmKSji2z /BzzbUTbwGFSd64pqUZ0lFMCS02XEjAyuHEJX9ag= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , Thomas Zimmermann , Maxime Ripard , Liam Girdwood , Mark Brown , Daniel Vetter , Borislav Petkov , Javier Martinez Canillas , Randy Dunlap , Geert Uytterhoeven , Peter Collingbourne , Andy Shevchenko , dri-devel@lists.freedesktop.org, Maarten Lankhorst , Rob Herring Subject: [PATCH 5.14 024/151] fbdev: simplefb: fix Kconfig dependencies Date: Mon, 11 Oct 2021 15:44:56 +0200 Message-Id: <20211011134518.629623285@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211011134517.833565002@linuxfoundation.org> References: <20211011134517.833565002@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Arnd Bergmann commit ec7cc3f74b4236860ce612656aa5be7936d1c594 upstream. Configurations with both CONFIG_FB_SIMPLE=y and CONFIG_DRM_SIMPLEDRM=m are allowed by Kconfig because the 'depends on !DRM_SIMPLEDRM' dependency does not disallow FB_SIMPLE as long as SIMPLEDRM is not built-in. This can however result in a build failure when cfb_fillrect() etc are then also in loadable modules: x86_64-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x1f8): undefined reference to `cfb_fillrect' x86_64-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x200): undefined reference to `cfb_copyarea' x86_64-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x208): undefined reference to `cfb_imageblit' To work around this, change FB_SIMPLE to be a 'tristate' symbol, which still allows both to be =m together, but not one of them to be =y if the other one is =m. If a distro kernel picks this configuration, it can be determined by local policy which of the two modules gets loaded. The 'of_chosen' export is needed as this is the first loadable module referencing it. Alternatively, the Kconfig dependency could be changed to 'depends on DRM_SIMPLEDRM=n', which would forbid the configuration with both drivers. Fixes: 11e8f5fd223b ("drm: Add simpledrm driver") Acked-by: Rob Herring # for drivers/of/ Link: https://lore.kernel.org/all/20210721151839.2484245-1-arnd@kernel.org/ Signed-off-by: Arnd Bergmann Cc: Thomas Zimmermann Cc: Daniel Vetter # fbdev support Cc: Maxime Ripard Cc: Liam Girdwood Cc: Mark Brown Cc: Daniel Vetter Cc: Borislav Petkov Cc: Javier Martinez Canillas Cc: Randy Dunlap Cc: Geert Uytterhoeven Cc: Peter Collingbourne Cc: Andy Shevchenko Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: # v5.14+ Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20210928145243.1098064-1-arnd@kernel.org Signed-off-by: Maarten Lankhorst Signed-off-by: Greg Kroah-Hartman --- drivers/of/base.c | 1 + drivers/video/fbdev/Kconfig | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-) --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -36,6 +36,7 @@ LIST_HEAD(aliases_lookup); struct device_node *of_root; EXPORT_SYMBOL(of_root); struct device_node *of_chosen; +EXPORT_SYMBOL(of_chosen); struct device_node *of_aliases; struct device_node *of_stdout; static const char *of_stdout_options; --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -2191,8 +2191,9 @@ config FB_HYPERV This framebuffer driver supports Microsoft Hyper-V Synthetic Video. config FB_SIMPLE - bool "Simple framebuffer support" - depends on (FB = y) && !DRM_SIMPLEDRM + tristate "Simple framebuffer support" + depends on FB + depends on !DRM_SIMPLEDRM select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT