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Commit ae62f1dd authored by Ilya Bakoulin's avatar Ilya Bakoulin Committed by Greg Kroah-Hartman
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drm/amd/display: Fix hang/underflow when transitioning to ODM4:1



[ Upstream commit e7b2b108 ]

[Why]
Under some circumstances, disabling an OPTC and attempting to reclaim
its OPP(s) for a different OPTC could cause a hang/underflow due to OPPs
not being properly disconnected from the disabled OPTC.

[How]
Ensure that all OPPs are unassigned from an OPTC when it gets disabled.

Reviewed-by: default avatarAlvin Lee <alvin.lee2@amd.com>
Acked-by: default avatarWayne Lin <wayne.lin@amd.com>
Signed-off-by: default avatarIlya Bakoulin <ilya.bakoulin@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Stable-dep-of: b4e05bb1 ("drm/amd/display: Clear OPTC mem select on disable")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent ce748df0
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