From: Melissa Wen Date: Fri, 29 Dec 2023 16:25:00 +0000 (-0100) Subject: drm/amd/display: fix bandwidth validation failure on DCN 2.1 X-Git-Tag: v6.6.17~522 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=50eb6bf4aca2e16ba08ae8aa3a5f4e14010b15b3;p=platform%2Fkernel%2Flinux-starfive.git drm/amd/display: fix bandwidth validation failure on DCN 2.1 commit 3a0fa3bc245ef92838a8296e0055569b8dff94c4 upstream. 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: b8272241ff9d ("drm/amd/display: Drop dc_commit_state in favor of dc_commit_streams") Signed-off-by: Melissa Wen Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- 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 861b5e4..3527d75 100644 --- 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, 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);