[PATCH 1/6] Revert "drm/atomic-helper: Fix leak in disable_all"

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Currently we're leaking fbs on load detect on account of nothing setting
up plane->old_fb for the drm_atomic_clean_old_fb() call in
drm_atomic_helper_commit_duplicated_state(). Removing the
drm_atomic_clean_old_fb() call seems like the right call to me here.
This does mean we end up leaking something via
drm_atomic_helper_shutdown() though, but we'll fix that up in a
different way.

This reverts commit 49d70aeaeca8f62b72b7712ecd1e29619a445866.

Cc: martin.peres at free.fr
Cc: chris at chris-wilson.co.uk
Cc: Dave Airlie <airlied at gmail.com> (v1)
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Daniel Vetter <daniel.vetter at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index c35654591c12..c48f187d08de 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2914,7 +2914,6 @@ int drm_atomic_helper_disable_all(struct drm_device *dev,
 	struct drm_plane *plane;
 	struct drm_crtc_state *crtc_state;
 	struct drm_crtc *crtc;
-	unsigned plane_mask = 0;
 	int ret, i;
 
 	state = drm_atomic_state_alloc(dev);
@@ -2957,14 +2956,10 @@ int drm_atomic_helper_disable_all(struct drm_device *dev,
 			goto free;
 
 		drm_atomic_set_fb_for_plane(plane_state, NULL);
-		plane_mask |= BIT(drm_plane_index(plane));
-		plane->old_fb = plane->fb;
 	}
 
 	ret = drm_atomic_commit(state);
 free:
-	if (plane_mask)
-		drm_atomic_clean_old_fb(dev, plane_mask, ret);
 	drm_atomic_state_put(state);
 	return ret;
 }
@@ -3095,16 +3090,11 @@ int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 	struct drm_connector_state *new_conn_state;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *new_crtc_state;
-	unsigned plane_mask = 0;
-	struct drm_device *dev = state->dev;
-	int ret;
 
 	state->acquire_ctx = ctx;
 
-	for_each_new_plane_in_state(state, plane, new_plane_state, i) {
-		plane_mask |= BIT(drm_plane_index(plane));
+	for_each_new_plane_in_state(state, plane, new_plane_state, i)
 		state->planes[i].old_state = plane->state;
-	}
 
 	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i)
 		state->crtcs[i].old_state = crtc->state;
@@ -3112,11 +3102,7 @@ int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 	for_each_new_connector_in_state(state, connector, new_conn_state, i)
 		state->connectors[i].old_state = connector->state;
 
-	ret = drm_atomic_commit(state);
-	if (plane_mask)
-		drm_atomic_clean_old_fb(dev, plane_mask, ret);
-
-	return ret;
+	return drm_atomic_commit(state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_commit_duplicated_state);
 
-- 
2.16.1