Current update area calculation is not handling situation where
e.g. cursor plane is fully or partially outside pipe area.

Fix this by checking damage area against pipe_src area using
drm_rect_intersect.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5440
Cc: José Roberto de Souza <jose.so...@intel.com>
Cc: Mika Kahola <mika.kah...@intel.com>
Tested-by: Mark Pearson <markpear...@lenovo.com>
Signed-off-by: Jouni Högander <jouni.hogan...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c 
b/drivers/gpu/drm/i915/display/intel_psr.c
index 8c099d24de86..5229ba89a079 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1724,6 +1724,10 @@ int intel_psr2_sel_fetch_update(struct 
intel_atomic_state *state,
                        break;
                }
 
+               /* Set x1 and x2 for drm_rect_intersect usage */
+               damaged_area.x1 = 0;
+               damaged_area.x2 = INT_MAX;
+
                /*
                 * If visibility or plane moved, mark the whole plane area as
                 * damaged as it needs to be complete redraw in the new and old
@@ -1735,20 +1739,23 @@ int intel_psr2_sel_fetch_update(struct 
intel_atomic_state *state,
                        if (old_plane_state->uapi.visible) {
                                damaged_area.y1 = old_plane_state->uapi.dst.y1;
                                damaged_area.y2 = old_plane_state->uapi.dst.y2;
-                               clip_area_update(&pipe_clip, &damaged_area);
+                               if (drm_rect_intersect(&damaged_area, 
&crtc_state->pipe_src))
+                                       clip_area_update(&pipe_clip, 
&damaged_area);
                        }
 
                        if (new_plane_state->uapi.visible) {
                                damaged_area.y1 = new_plane_state->uapi.dst.y1;
                                damaged_area.y2 = new_plane_state->uapi.dst.y2;
-                               clip_area_update(&pipe_clip, &damaged_area);
+                               if (drm_rect_intersect(&damaged_area, 
&crtc_state->pipe_src))
+                                       clip_area_update(&pipe_clip, 
&damaged_area);
                        }
                        continue;
                } else if (new_plane_state->uapi.alpha != 
old_plane_state->uapi.alpha) {
                        /* If alpha changed mark the whole plane area as 
damaged */
                        damaged_area.y1 = new_plane_state->uapi.dst.y1;
                        damaged_area.y2 = new_plane_state->uapi.dst.y2;
-                       clip_area_update(&pipe_clip, &damaged_area);
+                       if (drm_rect_intersect(&damaged_area, 
&crtc_state->pipe_src))
+                               clip_area_update(&pipe_clip, &damaged_area);
                        continue;
                }
 
@@ -1767,7 +1774,9 @@ int intel_psr2_sel_fetch_update(struct intel_atomic_state 
*state,
 
                damaged_area.y1 += new_plane_state->uapi.dst.y1 - src.y1;
                damaged_area.y2 += new_plane_state->uapi.dst.y1 - src.y1;
-               clip_area_update(&pipe_clip, &damaged_area);
+
+               if (drm_rect_intersect(&damaged_area, &crtc_state->pipe_src))
+                       clip_area_update(&pipe_clip, &damaged_area);
        }
 
        if (pipe_clip.y1 == -1)
-- 
2.25.1

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