Revert "drm/amd/display: fix bandwidth validation failure on DCN 2.1"

commit c2ab9ce0ee7225fc05f58a6671c43b8a3684f530 upstream.

This commit causes dmesg-warn on several IGT tests on DCN 3.1.6: *ERROR*
link_enc_cfg_validate: Invalid link encoder assignments - 0x1c

Affected IGT tests include:
- amdgpu/[amd_assr|amd_plane|amd_hotplug]
- kms_atomic
- kms_color
- kms_flip
- kms_properties
- kms_universal_plane

and some other tests

This reverts commit 3a0fa3bc245ef92838a8296e0055569b8dff94c4.

Cc: Melissa Wen <mwen@igalia.com>
Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Ivan Lipski <ivlipski@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 3527d75..861b5e4 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -10400,7 +10400,7 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
                        DRM_DEBUG_DRIVER("drm_dp_mst_atomic_check() failed\n");
                        goto fail;
                }
-               status = dc_validate_global_state(dc, dm_state->context, false);
+               status = dc_validate_global_state(dc, dm_state->context, true);
                if (status != DC_OK) {
                        DRM_DEBUG_DRIVER("DC global validation failure: %s (%d)",
                                       dc_status_to_str(status), status);