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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8C26C5AE4A for ; Wed, 15 Nov 2023 20:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344628AbjKOU6v (ORCPT ); Wed, 15 Nov 2023 15:58:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344595AbjKOU5p (ORCPT ); Wed, 15 Nov 2023 15:57:45 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BFE319AA for ; Wed, 15 Nov 2023 12:57:29 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6A7B5C32784; Wed, 15 Nov 2023 20:49:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700081340; bh=sSiaIz+1VujwsqJlX7qo7CFXGyzAD4UNknW/t2nIZWQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MPRrK6hcU0S7iJPv3iDAtC6CHAsagwr8N0hz/J61coE4I7BRY5hOp/VNivMDJRIzf 0HV356ZTIgVfIxTLGUrmjI0rFKk+jrIIOwb9LHj3L7eaEJ8SK6IvB/x2Zfg7tbfl60 0JtO2kvWZ5nflI8rGlYYhgKrUVjQyIrV8bxnQy6I= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tomi Valkeinen , Robert Foss , Sasha Levin Subject: [PATCH 5.15 094/244] drm/bridge: lt8912b: Add missing drm_bridge_attach call Date: Wed, 15 Nov 2023 15:34:46 -0500 Message-ID: <20231115203553.994423678@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115203548.387164783@linuxfoundation.org> References: <20231115203548.387164783@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tomi Valkeinen [ Upstream commit f45acf7acf75921c0409d452f0165f51a19a74fd ] The driver does not call drm_bridge_attach(), which causes the next bridge to not be added to the bridge chain. This causes the pipeline init to fail when DRM_BRIDGE_ATTACH_NO_CONNECTOR is used. Add the call to drm_bridge_attach(). Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Signed-off-by: Tomi Valkeinen Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-4-c542692c6a2f@ideasonboard.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/lontium-lt8912b.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c index 73b6fcae6dca8..6891863ed5104 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c @@ -548,6 +548,13 @@ static int lt8912_bridge_attach(struct drm_bridge *bridge, struct lt8912 *lt = bridge_to_lt8912(bridge); int ret; + ret = drm_bridge_attach(bridge->encoder, lt->hdmi_port, bridge, + DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (ret < 0) { + dev_err(lt->dev, "Failed to attach next bridge (%d)\n", ret); + return ret; + } + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { ret = lt8912_bridge_connector_init(bridge); if (ret) { -- 2.42.0