While picking up the Gamma correction patch for the msm driver I noticed that kms_color@invalid-gamma-lut-sizes and kms_color@invalid-degamma-lut-sizes tests fail. These tests attempt submitting LUT tables greater than the size specified by the corresponding property. The issue doesn't seem to be specific to msm driver only. Add generic check that LUT size is not greater than the size passed to drm_crtc_enable_color_mgmt().
Signed-off-by: Dmitry Baryshkov <[email protected]> --- Changes in v3: - Fixed elem_size type (LKP) - Link to v2: https://lore.kernel.org/r/[email protected] Changes in v2: - Fixed comments for drm_object_immutable_property_get_value(), changed it to use drm_WARN_ON (Thomas) - Reordered arguments of drm_property_replace_blob_from_id(), moving max_size before expected_size (Thomas) - Link to v1: https://lore.kernel.org/r/[email protected], resent at https://lore.kernel.org/all/[email protected]/ --- Dmitry Baryshkov (3): drm/mode_object: add drm_object_immutable_property_get_value() drm/atomic: add max_size check to drm_property_replace_blob_from_id() drm/atomic: verify that gamma/degamma LUTs are not too big .../drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 18 ++++++------ drivers/gpu/drm/drm_atomic_uapi.c | 32 ++++++++++++++++------ drivers/gpu/drm/drm_mode_object.c | 25 +++++++++++++++++ drivers/gpu/drm/drm_property.c | 11 ++++++++ include/drm/drm_mode_object.h | 3 ++ include/drm/drm_property.h | 1 + 6 files changed, 73 insertions(+), 17 deletions(-) --- base-commit: 349d4efadc1f831ebc0b872ba1e3a2b7dd58b72b change-id: 20251114-drm-fix-lut-checks-4bb325e24110 Best regards, -- With best wishes Dmitry
