From: Fangzhi Zuo <Jerry.Zuo@xxxxxxx> commit 4437936c6b696b98f3fe1d8679a2788c41b4df77 upstream. Synaptics Cascaded Panamera topology needs to unconditionally acquire root aux for dsc decoding. Reviewed-by: Roman Li <roman.li@xxxxxxx> Signed-off-by: Fangzhi Zuo <Jerry.Zuo@xxxxxxx> Signed-off-by: Zaeem Mohamed <zaeem.mohamed@xxxxxxx> Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: Mario Limonciello <superm1@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -253,7 +253,7 @@ static bool validate_dsc_caps_on_connect aconnector->dsc_aux = &aconnector->mst_root->dm_dp_aux.aux; /* synaptics cascaded MST hub case */ - if (!aconnector->dsc_aux && is_synaptics_cascaded_panamera(aconnector->dc_link, port)) + if (is_synaptics_cascaded_panamera(aconnector->dc_link, port)) aconnector->dsc_aux = port->mgr->aux; if (!aconnector->dsc_aux) Patches currently in stable-queue which might be from Jerry.Zuo@xxxxxxx are queue-6.11/drm-amdgpu-display-fix-a-mistake-in-revert-commit.patch queue-6.11/drm-amd-display-add-dsc-debug-log.patch queue-6.11/drm-amd-display-fix-synaptics-cascaded-panamera-dsc-determination.patch
