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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 2ACB8C4360F for ; Mon, 11 Mar 2019 19:55:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E73F1214AE for ; Mon, 11 Mar 2019 19:55:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334120; bh=61BqmY3uNBPd3e1AEPNJNWSZZZrkAu/rb75/cMQFdek=; h=From:To:Cc:Subject:Date:List-ID:From; b=cGkEwAtchZMqIvfl1D2ynU9YLWXLfhl0aElh+RCnMtIBqTCupNlf906cNVHAv9JWJ YgOh8LzhdbTT8YD9HOyh3gGHCaTAs0C2umSlNKW1i8hLX/UsQGO0qmarY92RjPiYRP YZdhwBWH1pNh1AER+2B2Ajca6+8VYUbY8IGvUidM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728026AbfCKTzS (ORCPT ); Mon, 11 Mar 2019 15:55:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:60784 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727118AbfCKTzS (ORCPT ); Mon, 11 Mar 2019 15:55:18 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5CA632087C; Mon, 11 Mar 2019 19:55:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334117; bh=61BqmY3uNBPd3e1AEPNJNWSZZZrkAu/rb75/cMQFdek=; h=From:To:Cc:Subject:Date:From; b=vFch72ZaoB8ZeTchBnoFnlIooirE282P8MMPAwgwgIfymX1vFt4OzH5IAst221hHj QlA+dGG+Rt18QM+RpRIcYQKlXWo2kug8KbC9WKos7bt37Ir5r8NV3FOiosOghgEM2F Jb4DQIx//ds9FnOeRH1SX+seXP4Bna6mfZ0oWHnA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Philipp Zabel , Sasha Levin , dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.20 01/52] drm/imx: ignore plane updates on disabled crtcs Date: Mon, 11 Mar 2019 15:54:25 -0400 Message-Id: <20190311195516.137772-1-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Philipp Zabel [ Upstream commit 4fb873c9648e383206e0a91cef9b03aa54066aca ] This patch fixes backtraces like the following when sending SIGKILL to a process with a currently pending plane update: [drm:ipu_plane_atomic_check] CRTC should be enabled [drm:drm_framebuffer_remove] *ERROR* failed to commit ------------[ cut here ]------------ WARNING: CPU: 3 PID: 63 at drivers/gpu/drm/drm_framebuffer.c:926 drm_framebuffer_remove+0x47c/0x498 atomic remove_fb failed with -22 Signed-off-by: Philipp Zabel Signed-off-by: Sasha Levin --- drivers/gpu/drm/imx/ipuv3-plane.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c index 40605fdf0e33..b1f327dcea99 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -372,9 +372,9 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, if (ret) return ret; - /* CRTC should be enabled */ + /* nothing to check when disabling or disabled */ if (!crtc_state->enable) - return -EINVAL; + return 0; switch (plane->type) { case DRM_PLANE_TYPE_PRIMARY: -- 2.19.1