drm/amd/display: Resize MST HDCP per-connector arrays to 32

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AMDGPU_DM_MAX_DISPLAY_INDEX is 31. It suggest a maximum number of
32 connectors. But the way it's used is like MAX_DISPLAY_COUNT.
Hence we're off by one with DRM core, which supports a max of 32
connectors.

Rename AMDGPU_DM_MAX_DISPLAY_INDEX to AMDGPU_DM_MAX_DISPLAY_COUNT
to match its actual use, and increase the size to 32 to match the
originally intended size.

Fixes: 82986fd631 ("drm/amd/display: save restore hdcp state when display is unplugged from mst hub")
Assisted-by: Copilot:claude-opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Harry Wentland 2026-07-16 16:49:06 -04:00 • committed by Alex Deucher

parent 1edb323406

commit 261e0fe4e2

2 changed files with 10 additions and 10 deletions

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10

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

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10

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.h

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