| From: |
| Arun R Murthy <arun.r.murthy-AT-intel.com> |
| To: |
| Maarten Lankhorst <maarten.lankhorst-AT-linux.intel.com>, Maxime Ripard <mripard-AT-kernel.org>, Thomas Zimmermann <tzimmermann-AT-suse.de>, David Airlie <airlied-AT-gmail.com>, Simona Vetter <simona-AT-ffwll.ch>, Jani Nikula <jani.nikula-AT-linux.intel.com>, Rodrigo Vivi <rodrigo.vivi-AT-intel.com>, Joonas Lahtinen <joonas.lahtinen-AT-linux.intel.com>, Tvrtko Ursulin <tursulin-AT-ursulin.net>, xaver.hugl-AT-kde.org, harry.wentland-AT-amd.com, uma.shankar-AT-intel.com, louis.chauvet-AT-bootlin.com, naveen1.kumar-AT-intel.com, ramya.krishna.yella-AT-intel.com |
| 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> |
| Cc: |
| dri-devel-AT-lists.freedesktop.org, intel-gfx-AT-lists.freedesktop.org, intel-xe-AT-lists.freedesktop.org, Arun R Murthy <arun.r.murthy-AT-intel.com>, Suraj Kandpal <suraj.kandpal-AT-intel.com> |
| Archive-link: |
| Article |
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 <maarten.lankhorst@linux.intel.com>
To: suraj.kandpal@intel.com>
To: Maxime Ripard <mripard@kernel.org>
To: Thomas Zimmermann <tzimmermann@suse.de>
To: David Airlie <airlied@gmail.com>
To: Simona Vetter <simona@ffwll.ch>
To: Jani Nikula <jani.nikula@linux.intel.com>
To: Rodrigo Vivi <rodrigo.vivi@intel.com>
To: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
To: Tvrtko Ursulin <tursulin@ursulin.net>
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 <arun.r.murthy@intel.com>
Signed-off-by: Arun R Murthy <arun.r.murthy@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 | 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 <arun.r.murthy@intel.com>
