drm/i915/fbc: Don't use a fence for a plane if FBC is not possible

No point in wasting a fence on a plane if it can't do FBC anyway.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240123090051.29818-1-ville.syrjala@linux.intel.com
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index ab2f52d21bad8bad22c184cce6aefac8b0ce5a29..153d9c79f5544bbde31702765dea5c3e05740672 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -535,7 +535,7 @@ bool intel_plane_uses_fence(const struct intel_plane_state *plane_state)
        struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 
        return DISPLAY_VER(dev_priv) < 4 ||
-               (plane->fbc &&
+               (plane->fbc && !plane_state->no_fbc_reason &&
                 plane_state->view.gtt.type == I915_GTT_VIEW_NORMAL);
 }