drm/i915: Reject async flips with bigjoiner

Currently async flips are busted when bigjoiner is in use.
As a short term fix simply reject async flips in that case.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9769
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231211081134.2698-1-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 4e957a8ddfdb363dffd137d0d1a4a26261efcc18..e8b307ae931964590ecbe6d442cb8017f54d6b15 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5926,6 +5926,17 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state,
                return -EINVAL;
        }
 
+       /*
+        * FIXME: Bigjoiner+async flip is busted currently.
+        * Remove this check once the issues are fixed.
+        */
+       if (new_crtc_state->bigjoiner_pipes) {
+               drm_dbg_kms(&i915->drm,
+                           "[CRTC:%d:%s] async flip disallowed with bigjoiner\n",
+                           crtc->base.base.id, crtc->base.name);
+               return -EINVAL;
+       }
+
        for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
                                             new_plane_state, i) {
                if (plane->pipe != crtc->pipe)