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 29298EA3F28 for ; Tue, 10 Feb 2026 09:05:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8864C10E506; Tue, 10 Feb 2026 09:05:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="cprsbmJo"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id EAE4A10E516; Tue, 10 Feb 2026 09:05:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770714331; x=1802250331; h=from:subject:date:message-id:mime-version: content-transfer-encoding:to:cc; bh=HsGdVKNdc3sY0fKM++CpCtaFS5rlcyLdCfKsMiqFFvs=; b=cprsbmJoBRX/eir+YaCeHRMxtH+6+r55XXwnu1e7lHsdJ6MKd7iuiCz0 Mx3I4E33RCrRvpIY0V6jQzCRNaGwZyKk19f/r0wdhRnSbqi+dEPtjREdS 96DpR1sE/K0TbZHjWaqqMeDTnZSS2zAZ3ccO7LO07yTjdkol+ULlCFIkI KVKTaEPfxTom3lKzP+6HZKpqwa/TxxRkc8lRVK9ahZHKvp6YXmYp3QiHF TKKxAcq0vfZxSM/RPqfovGLNfQfBraNKOrbo4hCb0nli1wiGP54kF/SgE et93c4r2C/1TmbxXuexq9oYARUR21YKQfjK7Nh60FxI5j+G4l+qyY/osV Q==; X-CSE-ConnectionGUID: 6aNuHqvTSm+Ccf5KoumLIw== X-CSE-MsgGUID: TFhaL8evQJ2HzgSavswdeQ== X-IronPort-AV: E=McAfee;i="6800,10657,11696"; a="94479137" X-IronPort-AV: E=Sophos;i="6.21,283,1763452800"; d="scan'208";a="94479137" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Feb 2026 01:05:30 -0800 X-CSE-ConnectionGUID: 5E3azl7IQ+iFPxiUQVIPNA== X-CSE-MsgGUID: nIuuk4FXQ36W6DyHkVGeyw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,283,1763452800"; d="scan'208";a="242478900" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by orviesa002.jf.intel.com with ESMTP; 10 Feb 2026 01:05:25 -0800 From: Arun R Murthy Subject: [PATCH v9 0/7] User readable error codes on atomic_ioctl failure Date: Tue, 10 Feb 2026 14:33:54 +0530 Message-Id: <20260210-atomic-v9-0-525c88fd2402@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAHr0imkC/03OywrDIBCF4VcprjtFTYyxq75HycJ4aQaaWFRCS 8i71wR6Wf4w52MWklxEl8j5sJDoZkwYphLqeCBm0NPNAdrShFMuqOQt6BxGNGCUZJW3lZCuJuX 4EZ3H5w5du9I+hhHyEJ3+zRsuP/OZAYNGK6MZs5UV9QWn7O4nE8ZNGzDlEF/7V3O7mZvQUMbVV 2iBQm162VOvNRXsT+jWdX0DF/SEVdoAAAA= 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: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 --- Changes in v9: - EDITME: describe what is new in this series revision. - EDITME: use bulletpoints and terse descriptions. - Link to v8: https://lore.kernel.org/r/20260129-atomic-v8-0-4cb7b0faa051@intel.com --- 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 | 89 ++++++++++++++++++++-------- 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(+), 37 deletions(-) --- base-commit: 6a3c9a03d943eb112c916c7419a837bc7de3a296 change-id: 20250728-atomic-c9713fd357e4 Best regards, -- Arun R Murthy