From patchwork Tue Dec 3 16:02:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Imre Deak X-Patchwork-Id: 13892658 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 235B9E74AC1 for ; Tue, 3 Dec 2024 16:01:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F12B810EA82; Tue, 3 Dec 2024 16:01:46 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="KYhVbOUk"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8E50410EA81; Tue, 3 Dec 2024 16:01:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1733241705; x=1764777705; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=IBt0zdjIG2M4j7yfCoXZQVIiWRGbFzvUILZeItIpcx8=; b=KYhVbOUkYkSJJND8814/b81FgqxNvtGXoP/p/bu484j+n36xbkYTnnIy rNFQYw2SLMLGyMxVm1GVEGCY20YtRzOiAs1wxBxZ//HtPtOOdp+l6NcWX 2UCGqA0SoJ4/nf3yZ1C/ak8l++MO6kWOUN+MPEZdS9UF8yz4FiTenZ7nw C7khj+5uWgNWUoCT6eorAMAmcMGsUOSDTWcFtCvkGQnWstdBQNLvmbxtk rgi1vcqHFACnIwxnx2kMJMy6FyMxw8dpbEJb/xvTAryLIEDMV1x8m9c1B vuHkCwcWedtA2ZILUdpXetbisMAKgZ2fyTa/a3zc8fscq6rQo4s3i09bZ A==; X-CSE-ConnectionGUID: tsdE0D5xSdeP7YG646NV6g== X-CSE-MsgGUID: ftW6zSDuRU2IexoM2u3rNg== X-IronPort-AV: E=McAfee;i="6700,10204,11275"; a="37236017" X-IronPort-AV: E=Sophos;i="6.12,205,1728975600"; d="scan'208";a="37236017" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2024 08:01:45 -0800 X-CSE-ConnectionGUID: htA1bWNGTFKX8fQyqHRTpA== X-CSE-MsgGUID: +aQVg58wSoShwfpvf5JxLQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,205,1728975600"; d="scan'208";a="93313023" Received: from ideak-desk.fi.intel.com ([10.237.72.78]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2024 08:01:43 -0800 From: Imre Deak To: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org, Lyude Paul Subject: [PATCH 0/7] drm/dp_mst: Fix a few side-band message handling issues Date: Tue, 3 Dec 2024 18:02:16 +0200 Message-ID: <20241203160223.2926014-1-imre.deak@intel.com> X-Mailer: git-send-email 2.44.2 MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 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" This patchset fixes a few issues related to MST side-band message handling reported by IGT CI (patch 1), by a user (patch 2) and ones I noticed during debugging (patch 4-6). Cc: Lyude Paul Imre Deak (7): drm/dp_mst: Fix resetting msg rx state after topology removal drm/dp_mst: Verify request type in the corresponding down message reply drm/dp_mst: Simplify error path in drm_dp_mst_handle_down_rep() drm/dp_mst: Fix down request message timeout handling drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() drm/dp_mst: Reset message rx state after OOM in drm_dp_mst_handle_up_req() drm/dp_mst: Use reset_msg_rx_state() instead of open coding it drivers/gpu/drm/display/drm_dp_mst_topology.c | 100 ++++++++++++++---- include/drm/display/drm_dp_mst_helper.h | 7 ++ 2 files changed, 87 insertions(+), 20 deletions(-) Reviewed-by: Lyude Paul