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 9E2B0C433EF for ; Wed, 20 Jul 2022 15:52:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231860AbiGTPwi (ORCPT ); Wed, 20 Jul 2022 11:52:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231622AbiGTPwh (ORCPT ); Wed, 20 Jul 2022 11:52:37 -0400 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7B184BD19 for ; Wed, 20 Jul 2022 08:52:36 -0700 (PDT) Received: by mail-pl1-x62a.google.com with SMTP id w7so15333721ply.12 for ; Wed, 20 Jul 2022 08:52:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2R5fsiZtZGlt+FobiR6W0jXlK1PNk4NpdanB+YrtTj4=; b=AR1YQry57YWBTW9l3DTgkGErpP13QbkNF2JOlwbPEBU7/rS03udEpZZVR5AMazoh6G pemS6qjSpURfm6lO813a9hWh2itiOrPeJxp9hAIalG1qkwxG1XEMca3JPT75WoHqLgCK LSSslsVB61hJY4ageZmSvMirSj7fhG1NAjv5M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2R5fsiZtZGlt+FobiR6W0jXlK1PNk4NpdanB+YrtTj4=; b=uTUu533AAhsAel6tAgyFHjCo/h30CexfSdRK0oLcJJJV2r0b730rMUFgZadTypY7WJ qTbkWd2rD66kpZ+SaZVdE400tMC0aVr9cuZjgw8C0bLfvLBGR78j9zoU9tCqchLjaqDU A5wFyqxazEwardlD9Yh59Ezxi4fULROlxtjCjb8BhUqT6stWSuUBrXvMiKM236OO5fbJ fnMi6/ID+oKnG2IOKP8L9Iq3VcIJH5cMMh8VJjz2yJuYp7Wsu9Upq3L0wTVWqYtFzoVY hPkc1VPX4nc3wASayYuTvdV0d9Fn4FKN/Lgyxcwj/glv+dQ1G3tP3mkUjjN27fW0k4Qu kx1w== X-Gm-Message-State: AJIora8IrWNNdfcIQRDX0+4xuAlimtOrtfA1jI5xoGAaO+rBr+JtTd2F kUc3bEHrk2dj21nU6yPX5nBi9Q== X-Google-Smtp-Source: AGRyM1uJchxuQnN136/OorRRTcNQCp33W035zpvqDdbfw4L0q7XpSJGz1cssPXyqkqJZocUt6AJHnw== X-Received: by 2002:a17:902:7d92:b0:16c:54a4:bb2f with SMTP id a18-20020a1709027d9200b0016c54a4bb2fmr39962044plm.158.1658332356419; Wed, 20 Jul 2022 08:52:36 -0700 (PDT) Received: from localhost.localdomain ([2405:201:c00a:a073:d177:d5:aee:4f03]) by smtp.gmail.com with ESMTPSA id a8-20020a170902710800b0015e8d4eb1d7sm13919198pll.33.2022.07.20.08.52.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Jul 2022 08:52:36 -0700 (PDT) From: Jagan Teki To: Andrzej Hajda , Inki Dae , Marek Szyprowski , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Frieder Schrempf , Fancy Fang , Tim Harvey , Michael Nazzareno Trimarchi , Adam Ford , Neil Armstrong , Robert Foss , Laurent Pinchart , Tommaso Merciai , Marek Vasut Cc: Matteo Lisi , dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, NXP Linux Team , linux-amarula , Jagan Teki Subject: [PATCH v3 01/13] drm: exynos: dsi: Restore proper bridge chain order Date: Wed, 20 Jul 2022 21:21:58 +0530 Message-Id: <20220720155210.365977-2-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220720155210.365977-1-jagan@amarulasolutions.com> References: <20220720155210.365977-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: Marek Szyprowski Restore the proper bridge chain by finding the previous bridge in the chain instead of passing NULL. This establishes a proper bridge chain while attaching downstream bridges. v3: * new patch Signed-off-by: Marek Szyprowski Signed-off-by: Jagan Teki --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index ec673223d6b7..e5b1540c4ae4 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1428,7 +1428,8 @@ static int exynos_dsi_attach(struct drm_bridge *bridge, { struct exynos_dsi *dsi = bridge_to_dsi(bridge); - return drm_bridge_attach(bridge->encoder, dsi->out_bridge, NULL, flags); + return drm_bridge_attach(bridge->encoder, dsi->out_bridge, bridge, + flags); } static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = { @@ -1474,7 +1475,10 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, drm_bridge_add(&dsi->bridge); - drm_bridge_attach(encoder, &dsi->bridge, NULL, 0); + drm_bridge_attach(encoder, &dsi->bridge, + list_first_entry_or_null(&encoder->bridge_chain, + struct drm_bridge, + chain_node), 0); /* * This is a temporary solution and should be made by more generic way. -- 2.25.1