From patchwork Wed Nov 27 02:16:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Souza, Jose" X-Patchwork-Id: 11263325 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0145013A4 for ; Wed, 27 Nov 2019 02:16:23 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 DA41020722 for ; Wed, 27 Nov 2019 02:16:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA41020722 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0B04D6E095; Wed, 27 Nov 2019 02:16:21 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 597786E095 for ; Wed, 27 Nov 2019 02:16:19 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Nov 2019 18:16:18 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,247,1571727600"; d="scan'208";a="408856986" Received: from josouza-mobl.jf.intel.com (HELO josouza-MOBL.intel.com) ([10.98.40.66]) by fmsmga005.fm.intel.com with ESMTP; 26 Nov 2019 18:16:18 -0800 From: =?utf-8?q?Jos=C3=A9_Roberto_de_Souza?= To: intel-gfx@lists.freedesktop.org Date: Tue, 26 Nov 2019 18:16:09 -0800 Message-Id: <20191127021609.162700-1-jose.souza@intel.com> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/display: Suspend MST topology manager before destroy fbdev X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" MST do topology probe in threads, so this running threads needs to be flushed before fbdev is destroyed as when a new MST node is found it calls drm_kms_helper_hotplug_event() that calls fbdev functions Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109964 Signed-off-by: José Roberto de Souza Reviewed-by: Lucas De Marchi --- drivers/gpu/drm/i915/display/intel_display.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 8f2770951459..372dd48691cf 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -17989,6 +17989,13 @@ void intel_modeset_driver_remove(struct drm_i915_private *i915) */ intel_hpd_poll_fini(i915); + /* + * MST do topology probe in threads, so this running threads needs to + * be flushed before fbdev is destroyed as when a new MST node is found + * it call drm_kms_helper_hotplug_event() that calls fbdev functions + */ + intel_dp_mst_suspend(i915); + /* poll work can call into fbdev, hence clean that up afterwards */ intel_fbdev_fini(i915);