drm/atomic: add max_size check to drm_property_replace_blob_from_id()

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The function drm_property_replace_blob_from_id() allows checking whether
the blob size is equal to a predefined value. In case of variable-size
properties (like the gamma / degamma LUTs) we might want to check for
the blob size against the maximum, allowing properties of the size
lesser than the max supported by the hardware. Extend the function in
order to support such checks.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260106-drm-fix-lut-checks-v3-2-f7f979eb73c8@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

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Dmitry Baryshkov 2026-01-06 05:09:56 +02:00

parent 66c9c0cfe7

commit ca59e33f5a

4 changed files with 27 additions and 17 deletions

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18

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c

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14

drivers/gpu/drm/drm_atomic_uapi.c

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11

drivers/gpu/drm/drm_property.c

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