From: Fangzhi Zuo Date: Mon, 12 Aug 2024 16:13:44 +0000 (-0400) Subject: drm/amd/display: Fix Synaptics Cascaded Panamera DSC Determination X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a8a3ba3deb393f22a2f55ccf10122167f6db080f;p=linux drm/amd/display: Fix Synaptics Cascaded Panamera DSC Determination commit 4437936c6b696b98f3fe1d8679a2788c41b4df77 upstream. Synaptics Cascaded Panamera topology needs to unconditionally acquire root aux for dsc decoding. Reviewed-by: Roman Li Signed-off-by: Fangzhi Zuo Signed-off-by: Zaeem Mohamed Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Cc: Mario Limonciello Signed-off-by: Greg Kroah-Hartman --- diff --git 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 index b50010ed7633..8b2da505834e 100644 --- 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 @@ -251,7 +251,7 @@ static bool validate_dsc_caps_on_connector(struct amdgpu_dm_connector *aconnecto 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)