drm/i915: release cursor when crtc is destroyed

crtc is holding a reference to a cursor bo and it needs
to be released when crtc is destroyed so that we don't leak
the cursor bo.

v2: Enhance set and move cursor so that disabled
cursor is handled correctly (Ville Syrjälä)

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a45309130a34..161b064592af 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6509,7 +6509,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
         intel_crtc->cursor_width = width;
         intel_crtc->cursor_height = height;
 
-        intel_crtc_update_cursor(crtc, true);
+        intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
 
         return 0;
 fail_unpin:
@@ -6528,7 +6528,7 @@ static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
         intel_crtc->cursor_x = x;
         intel_crtc->cursor_y = y;
 
-        intel_crtc_update_cursor(crtc, true);
+        intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
 
         return 0;
 }
@@ -7042,6 +7042,8 @@ static void intel_crtc_destroy(struct drm_crtc *crtc)
                 kfree(work);
         }
 
+        intel_crtc_cursor_set(crtc, NULL, 0, 0, 0);
+
         drm_crtc_cleanup(crtc);
 
         kfree(intel_crtc);