Patch "Revert "drm/amd/display: fix bandwidth validation failure on DCN 2.1"" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

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

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-drm-amd-display-fix-bandwidth-validation-failure-on-dcn-2.1.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From c2ab9ce0ee7225fc05f58a6671c43b8a3684f530 Mon Sep 17 00:00:00 2001
From: Ivan Lipski <ivlipski@xxxxxxx>
Date: Fri, 5 Jan 2024 19:40:50 -0500
Subject: Revert "drm/amd/display: fix bandwidth validation failure on DCN 2.1"

From: Ivan Lipski <ivlipski@xxxxxxx>

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@xxxxxxxxxx>
Cc: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Ivan Lipski <ivlipski@xxxxxxx>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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_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);


Patches currently in stable-queue which might be from ivlipski@xxxxxxx are

queue-6.6/revert-drm-amd-display-fix-bandwidth-validation-failure-on-dcn-2.1.patch




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