drm/amd/display: Fix KUnit MST warnings

[WHY]
The MST add-connector fixture registers an unmanaged master connector
but does not clean it up before its KUnit-owned storage is released.

[HOW]
Register a KUnit action after successful connector initialization to
run drm_connector_cleanup before freeing the master connector.

Assisted-by: Copilot:GPT-6-Astra
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_mst_types_test.c b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_mst_types_test.c
index 382eafab2d43..eafa3e6733a6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_mst_types_test.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_mst_types_test.c
@@ -1311,6 +1311,13 @@ struct dm_mst_test_add_ctx {
 	struct dc_link *link;
 };
 
+static void dm_mst_test_cleanup_add_ctx(void *data)
+{
+	struct amdgpu_dm_connector *master = data;
+
+	drm_connector_cleanup(&master->base);
+}
+
 /*
  * Stand in for amdgpu_display_modeset_create_props(), which the test module
  * cannot link against. Only the properties amdgpu_dm_connector_init_helper()
@@ -1368,6 +1375,8 @@ static void dm_mst_test_init_add_ctx(struct kunit *test, struct dm_mst_test_add_
 	ret = drm_connector_init(drm, &ctx->master->base, &dm_mst_test_connector_funcs,
 				 DRM_MODE_CONNECTOR_DisplayPort);
 	KUNIT_ASSERT_EQ(test, ret, 0);
+	KUNIT_ASSERT_EQ(test,
+			kunit_add_action_or_reset(test, dm_mst_test_cleanup_add_ctx, ctx->master), 0);
 
 	ctx->port = kunit_kzalloc(test, sizeof(*ctx->port), GFP_KERNEL);
 	KUNIT_ASSERT_NOT_NULL(test, ctx->port);