From patchwork Tue Dec 15 08:23:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Guido_G=C3=BCnther?= X-Patchwork-Id: 11974187 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=-11.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 C02B5C4361B for ; Tue, 15 Dec 2020 08:24:59 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 72FB822273 for ; Tue, 15 Dec 2020 08:24:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 72FB822273 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sigxcpu.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe :List-Id:MIME-Version:Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Owner; bh=0hmMIg3xc+a8olCFzYm79wi6/TDBb+3upQoQ1AQ+QuE=; b=W8yhQStkvdVrOBu6m8FL88b1JB ijb8yPmrpCixaGnXb/iNa5zhSPuDt/mrs+F8fdR+9hde4hhgyfutaTrpTZ4E4bgr091XDKGysMjMr Yuakj8B5Feo1qNr/OhjicStCxN5Uw/GhwkPhvPJ+kN3VbdBB2w5x9uAZZAa8utRsPAW+w0yRbSdwz jXaQBToPweKXyH+EXrMQ5SwbXKKkmk/NH1HqAMQxAcKQ0ip2+pw52GeHdBt/LI0ZZNyoAv2a4/2a3 a1ZfRTAT9olL96PU3OrVH+L9OhTMGu3mQ1GBQMCcoOdG0tIghjzx8hxpzR7PZi9QC7XJXm22NCtyp t2OvD6Fw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kp5cZ-0008Ov-6y; Tue, 15 Dec 2020 08:23:47 +0000 Received: from honk.sigxcpu.org ([24.134.29.49]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kp5cW-0008Nh-F6 for linux-arm-kernel@lists.infradead.org; Tue, 15 Dec 2020 08:23:45 +0000 Received: from localhost (localhost [127.0.0.1]) by honk.sigxcpu.org (Postfix) with ESMTP id 97FCCFB04; Tue, 15 Dec 2020 09:23:40 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at honk.sigxcpu.org Received: from honk.sigxcpu.org ([127.0.0.1]) by localhost (honk.sigxcpu.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lrgQtBwn5rT4; Tue, 15 Dec 2020 09:23:39 +0100 (CET) Received: by bogon.sigxcpu.org (Postfix, from userid 1000) id 90C2A43FDF; Tue, 15 Dec 2020 09:23:38 +0100 (CET) From: =?utf-8?q?Guido_G=C3=BCnther?= To: Marek Vasut , Stefan Agner , David Airlie , Daniel Vetter , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Emil Velikov , Laurent Pinchart , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 0/1] drm: mxsfb: Silence -EPROBE_DEFER while waiting for bridge Date: Tue, 15 Dec 2020 09:23:37 +0100 Message-Id: X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201215_032344_666640_225ADBF4 X-CRM114-Status: UNSURE ( 9.00 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org It can take multiple iterations until all components for an attached DSI bridge are up leading to several: [ 3.796425] mxsfb 30320000.lcd-controller: Cannot connect bridge: -517 [ 3.816952] mxsfb 30320000.lcd-controller: [drm:mxsfb_probe [mxsfb]] *ERROR* failed to attach bridge: -517 Silence this by checking for -EPROBE_DEFER and using dev_err_probe() so we set a deferred reason in case a dependency fails to probe (which quickly happens on small config/DT changes due to the rather long probe chain which can include bridges, phys, panels, backights, leds, etc.). This also removes the only DRM_DEV_ERROR() usage, the rest of the driver uses dev_err(). Guido Günther (1): drm: mxsfb: Silence -EPROBE_DEFER while waiting for bridge drivers/gpu/drm/mxsfb/mxsfb_drv.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)