[Intel-gfx] [PATCH 1/2] drm/i915: Swap ggtt_vma during legacy cursor update

[Maarten Lankhorst]

From: Maarten Lankhorst <maarten.lankho...@linux.intel.com>

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_cursor.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c 
b/drivers/gpu/drm/i915/display/intel_cursor.c
index 8ed8a623fa98..b1a77b89585d 100644
--- a/drivers/gpu/drm/i915/display/intel_cursor.c
+++ b/drivers/gpu/drm/i915/display/intel_cursor.c
@@ -690,9 +690,8 @@ intel_legacy_cursor_update(struct drm_plane *_plane,
        if (ret)
                goto out_free;
 
-       ret = intel_plane_pin_fb(new_plane_state);
-       if (ret)
-               goto out_free;
+       /* magic trick! */
+       swap(new_plane_state->ggtt_vma, old_plane_state->ggtt_vma);
 
        intel_frontbuffer_flush(to_intel_frontbuffer(new_plane_state->hw.fb),
                                ORIGIN_CURSOR_UPDATE);
-- 
2.39.2