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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 C119FC433E0 for ; Mon, 6 Jul 2020 08:00:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A25372074F for ; Mon, 6 Jul 2020 08:00:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728283AbgGFIAj (ORCPT ); Mon, 6 Jul 2020 04:00:39 -0400 Received: from lucky1.263xmail.com ([211.157.147.131]:60586 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728012AbgGFIAj (ORCPT ); Mon, 6 Jul 2020 04:00:39 -0400 Received: from localhost (unknown [192.168.167.32]) by lucky1.263xmail.com (Postfix) with ESMTP id 3E97FB05EE; Mon, 6 Jul 2020 16:00:32 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P14850T139810951177984S1594022430112946_; Mon, 06 Jul 2020 16:00:31 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: hjc@rock-chips.com X-SENDER: hjc@rock-chips.com X-LOGIN-NAME: hjc@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 X-System-Flag: 0 From: Sandy Huang To: heiko@sntech.de, Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Cc: huangtao@rock-chips.com, andy.yan@rock-chips.com, kever.yang@rock-chips.com, Sandy Huang , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/of: Consider the state in which the ep is disabled Date: Mon, 6 Jul 2020 15:59:44 +0800 Message-Id: <20200706075944.11558-1-hjc@rock-chips.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org don't mask possible_crtcs if remote-point is disabled. Signed-off-by: Sandy Huang --- drivers/gpu/drm/drm_of.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c index fdb05fbf72a0..f5f250435add 100644 --- a/drivers/gpu/drm/drm_of.c +++ b/drivers/gpu/drm/drm_of.c @@ -66,6 +66,11 @@ uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, uint32_t possible_crtcs = 0; for_each_endpoint_of_node(port, ep) { + if (!of_device_is_available(ep)) { + of_node_put(ep); + continue; + } + remote_port = of_graph_get_remote_port(ep); if (!remote_port) { of_node_put(ep); -- 2.17.1