Commit 3a0fa3bc authored by Melissa Wen's avatar Melissa Wen Committed by Alex Deucher
Browse files

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



IGT `amdgpu/amd_color/crtc-lut-accuracy` fails right at the beginning of
the test execution, during atomic check, because DC rejects the
bandwidth state for a fb sizing 64x64. The test was previously working
with the deprecated dc_commit_state(). Now using
dc_validate_with_context() approach, the atomic check needs to perform a
full state validation. Therefore, set fast_validation to false in the
dc_validate_global_state call for atomic check.

Cc: stable@vger.kernel.org
Fixes: b8272241 ("drm/amd/display: Drop dc_commit_state in favor of dc_commit_streams")
Signed-off-by: default avatarMelissa Wen <mwen@igalia.com>
Signed-off-by: default avatarHamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 16783d8e

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+1 −1
Original line number Diff line number Diff line
@@ -10753,7 +10753,7 @@ 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, true);

		status = dc_validate_global_state(dc, dm_state->context, false);

		if (status != DC_OK) {

			DRM_DEBUG_DRIVER("DC global validation failure: %s (%d)",

				       dc_status_to_str(status), status);