From patchwork Mon Mar 14 11:54:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 551284 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 176AFC4321E for ; Mon, 14 Mar 2022 12:12:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238078AbiCNMNc (ORCPT ); Mon, 14 Mar 2022 08:13:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241164AbiCNMM7 (ORCPT ); Mon, 14 Mar 2022 08:12:59 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E3B436174; Mon, 14 Mar 2022 05:11:01 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0B252B80DF7; Mon, 14 Mar 2022 12:11:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F517C340E9; Mon, 14 Mar 2022 12:10:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1647259858; bh=MCanwxxSbotRv9mh+b1RN09ulz21n+ZgM4BgmlgR4HE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cxhDsPeZZkcdCZ8E6AJSn/XhIXuaB0HAWhEWDgutGUY6JZTWaf5wJXUpYnPobhHy6 XuvqJlyiKIX88d+vuIva9r1YUoGs2VXpGjH8dMUxxik9njabeYy2+Ira5BbY0w0BSs 0uLKQ5+ivfuEQcUld0fl6rF8e3W+QUZIQUXRZxak= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Zimmermann , Naresh Kamboju , Linux Kernel Functional Testing , Lyude Paul , Sam Ravnborg , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , dri-devel@lists.freedesktop.org, Dave Airlie Subject: [PATCH 5.15 105/110] drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP Date: Mon, 14 Mar 2022 12:54:47 +0100 Message-Id: <20220314112745.956467304@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220314112743.029192918@linuxfoundation.org> References: <20220314112743.029192918@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Thomas Zimmermann commit 3755d35ee1d2454b20b8a1e20d790e56201678a4 upstream. As reported in [1], DRM_PANEL_EDP depends on DRM_DP_HELPER. Select the option to fix the build failure. The error message is shown below. arm-linux-gnueabihf-ld: drivers/gpu/drm/panel/panel-edp.o: in function `panel_edp_probe': panel-edp.c:(.text+0xb74): undefined reference to `drm_panel_dp_aux_backlight' make[1]: *** [/builds/linux/Makefile:1222: vmlinux] Error 1 The issue has been reported before, when DisplayPort helpers were hidden behind the option CONFIG_DRM_KMS_HELPER. [2] v2: * fix and expand commit description (Arnd) Signed-off-by: Thomas Zimmermann Fixes: 9d6366e743f3 ("drm: fb_helper: improve CONFIG_FB dependency") Reported-by: Naresh Kamboju Reported-by: Linux Kernel Functional Testing Reviewed-by: Lyude Paul Acked-by: Sam Ravnborg Link: https://lore.kernel.org/dri-devel/CA+G9fYvN0NyaVkRQmA1O6rX7H8PPaZrUAD7=RDy33QY9rUU-9g@mail.gmail.com/ # [1] Link: https://lore.kernel.org/all/20211117062704.14671-1-rdunlap@infradead.org/ # [2] Cc: Thomas Zimmermann Cc: Lyude Paul Cc: Daniel Vetter Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: dri-devel@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20220203093922.20754-1-tzimmermann@suse.de Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/panel/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -83,6 +83,7 @@ config DRM_PANEL_SIMPLE depends on PM select VIDEOMODE_HELPERS select DRM_DP_AUX_BUS + select DRM_DP_HELPER help DRM panel driver for dumb panels that need at most a regulator and a GPIO to be powered up. Optionally a backlight can be attached so