[PATCH] drm/msm/mdp5: Don't leak some plane state

[Daniel Vetter]

Apparently no one noticed that mdp5 plane states leak like a sieve
ever since we introduced plane_state->commit refcount a few years ago
in 21a01abbe32a ("drm/atomic: Fix freeing connector/plane state too
early by tracking commits, v3.")

Fix it by using the right helpers.

Fixes: 21a01abbe32a ("drm/atomic: Fix freeing connector/plane state too early by tracking commits, v3.")
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Rob Clark <robdclark at gmail.com>
Cc: Abhinav Kumar <quic_abhinavk at quicinc.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
Cc: linux-arm-msm at vger.kernel.org
Cc: freedreno at lists.freedesktop.org
Reported-and-tested-by: dorum at noisolation.com
Cc: dorum at noisolation.com
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index bd2c4ac45601..0d5ff03cb091 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -130,8 +130,7 @@ static void mdp5_plane_destroy_state(struct drm_plane *plane,
 {
 	struct mdp5_plane_state *pstate = to_mdp5_plane_state(state);
 
-	if (state->fb)
-		drm_framebuffer_put(state->fb);
+	__drm_atomic_helper_plane_destroy_state(state);
 
 	kfree(pstate);
 }
-- 
2.40.1