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[why] Some ODM-related register settings are inconsistently updated by VBIOS, causing the state in DC to be invalid, which would then end up crashing in certain use-cases (such as disable/enable device). [how] Check the enabled status of the second pipe when determining the number of OPTC sources. If the second pipe is disabled, set the number of sources to 1 regardless of other settings (that may not be updated correctly). Signed-off-by: Nikola Cornij <nikola.cornij@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>