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drm/amd/display: Remove register from DCN35 DMCUB diagnostic collection
[Why] These registers should not be read from driver and triggering the security violation when DMCUB work times out and diagnostics are collected blocks Z8 entry. [How] Remove the register read from DCN35. Reviewed-by: Duncan Ma <duncan.ma@amd.com> Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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