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 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 E48E2D358E5 for ; Thu, 29 Jan 2026 08:54:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5599010E80E; Thu, 29 Jan 2026 08:54:46 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="H2g0WTmq"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0373710E310; Thu, 29 Jan 2026 08:54:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1769676885; x=1801212885; h=from:subject:date:message-id:mime-version: content-transfer-encoding:to:cc; bh=uz5xvlD86mwwG9UMw451LFd5CbY7UvwzMxtOjK+ZAl0=; b=H2g0WTmqubA5He1P6IQja8Z0gEdvjxXwi2/N7cfXw8ZgWiOwq/qRHIba YGVD3K9Pl0qpdVE3fww2BGkU0lkX5EDKjuMucC/eiLpXvfga7F8qqt4Gc AvDaK/LunPp3jW9jQ8/YY8XVQjl2T3/hgU2WJB2KyqEv15+CSWag5HZ0q gjErRdN+WVKGhbGQsuBEt2b0+do/sLTVdXTeRjtzlYO9aUKYwkQysqWKI rTEswSEMBLr6Z8+m2aPg8OFhxNZTCIMkxbsbGzQYViNbYDiw20uWCzJhy SKC149uAW6l2njm1sQgcanNXQGFIYBeKQk7yXlnXyiYThqkvVpwnXILsL A==; X-CSE-ConnectionGUID: 63pQNCa6RZG2sLHnatIezQ== X-CSE-MsgGUID: 5Nlf5sIhSNGZ7grQLe6MLg== X-IronPort-AV: E=McAfee;i="6800,10657,11685"; a="69919922" X-IronPort-AV: E=Sophos;i="6.21,260,1763452800"; d="scan'208";a="69919922" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jan 2026 00:54:44 -0800 X-CSE-ConnectionGUID: gRtGNHfxQD6+WElbrF6NXw== X-CSE-MsgGUID: wb5BBubYTzyc+mNStQseSg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,260,1763452800"; d="scan'208";a="213019508" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by fmviesa005.fm.intel.com with ESMTP; 29 Jan 2026 00:54:39 -0800 From: Arun R Murthy Subject: [PATCH v8 0/7] User readable error codes on atomic_ioctl failure Date: Thu, 29 Jan 2026 14:22:57 +0530 Message-Id: <20260129-atomic-v8-0-4cb7b0faa051@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAOkfe2kC/0XMQQrDIBCF4auEWXdK1BiTrnqP0oXo2AzUWFRCI eTulULp8oP3vx0KZaYCl26HTBsXTmvDdOrALXZ9ELJvBtlL3Rs5oa0pskM3G6GCV9rQAG38yhT 4/T263ZtDThHrksn+81GaX74JFDja2VkhvPJ6uPJa6Xl2KcJxfACcohyxlgAAAA== X-Change-ID: 20250728-atomic-c9713fd357e4 To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , xaver.hugl@kde.org, harry.wentland@amd.com, uma.shankar@intel.com, louis.chauvet@bootlin.com, naveen1.kumar@intel.com, ramya.krishna.yella@intel.com Cc: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, Arun R Murthy , Suraj Kandpal X-Mailer: b4 0.15-dev 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" The series focuses on providing a user readable error value on a failure in drm_atomic_ioctl(). Usually -EINVAL is returned in most of the error cases and it is difficult for the user to decode the error and get to know the real cause for the error. If user gets to know the reason for the error then corrective measurements can be taken up. User will have to check for the capability DRM_CAP_ATOMIC_ERROR_REPORTING before using this feature so as to ensure that the driver supports failure reporting. TODO: driver specific error codes are to be added and will be done in the follow-up patches. TODO: Once the series is merged the element 'reserved' used for sending the failure code in struct drm_mode_atomic is to changed to err_code. The IGT related changes are pushed for review @ https://patchwork.freedesktop.org/series/153330/ To: Maarten Lankhorst To: suraj.kandpal@intel.com> To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Jani Nikula To: Rodrigo Vivi To: Joonas Lahtinen To: Tvrtko Ursulin To: xaver.hugl@kde.org To: harry.wentland@amd.com To: uma.shankar@intel.com To: louis.chauvet@bootlin.com To: naveen1.kumar@intel.com To: ramya.krishna.yella@intel.com Cc: dri-devel@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org Cc: intel-xe@lists.freedesktop.org Signed-off-by: Arun R Murthy Signed-off-by: Arun R Murthy --- Arun R Murthy (7): drm: Define user readable error codes for atomic ioctl drm/atomic: Add error_code element in atomic_state drm/atomic: Allocate atomic_state at the beginning of atomic_ioctl drm/atomic: Call complete_signaling only if prepare_signaling is done drm/atomic: Return user readable error in atomic_ioctl drm/i915/display: Error codes for async flip failures drm: Introduce DRM_CAP_ATOMIC_ERROR_REPORTING drivers/gpu/drm/drm_atomic.c | 31 ++++++++++ drivers/gpu/drm/drm_atomic_uapi.c | 91 +++++++++++++++++++--------- drivers/gpu/drm/drm_ioctl.c | 3 + drivers/gpu/drm/i915/display/intel_display.c | 25 ++++---- include/drm/drm_atomic.h | 10 +++ include/uapi/drm/drm.h | 7 +++ include/uapi/drm/drm_mode.h | 37 +++++++++++ 7 files changed, 165 insertions(+), 39 deletions(-) --- base-commit: 6a3c9a03d943eb112c916c7419a837bc7de3a296 change-id: 20250728-atomic-c9713fd357e4 Best regards, -- Arun R Murthy