Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 302 +++++++++++++++++++-----------------
 1 file changed, 157 insertions(+), 145 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c 
b/drivers/gpu/drm/drm_atomic_helper.c
index fcb6e5b55217..c8aba493fc17 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -103,7 +103,7 @@ static int handle_conflicting_encoders(struct 
drm_atomic_state *state,
         * part of the state. If the same encoder is assigned to multiple
         * connectors bail out.
         */
-       for_each_connector_in_state(state, connector, conn_state, i) {
+       for_each_new_connector_in_state(state, connector, conn_state, i) {
                const struct drm_connector_helper_funcs *funcs = 
connector->helper_private;
                struct drm_encoder *new_encoder;

@@ -238,22 +238,22 @@ steal_encoder(struct drm_atomic_state *state,
 {
        struct drm_crtc_state *crtc_state;
        struct drm_connector *connector;
-       struct drm_connector_state *connector_state;
+       struct drm_connector_state *old_connector_state, *new_connector_state;
        int i;

-       for_each_connector_in_state(state, connector, connector_state, i) {
+       for_each_oldnew_connector_in_state(state, connector, 
old_connector_state, new_connector_state, i) {
                struct drm_crtc *encoder_crtc;

-               if (connector_state->best_encoder != encoder)
+               if (new_connector_state->best_encoder != encoder)
                        continue;

-               encoder_crtc = connector->state->crtc;
+               encoder_crtc = old_connector_state->crtc;

                DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] in use on [CRTC:%d:%s], 
stealing it\n",
                                 encoder->base.id, encoder->name,
                                 encoder_crtc->base.id, encoder_crtc->name);

-               set_best_encoder(state, connector_state, NULL);
+               set_best_encoder(state, new_connector_state, NULL);

                crtc_state = drm_atomic_get_existing_crtc_state(state, 
encoder_crtc);
                crtc_state->connectors_changed = true;
@@ -265,7 +265,8 @@ steal_encoder(struct drm_atomic_state *state,
 static int
 update_connector_routing(struct drm_atomic_state *state,
                         struct drm_connector *connector,
-                        struct drm_connector_state *connector_state)
+                        struct drm_connector_state *old_connector_state,
+                        struct drm_connector_state *new_connector_state)
 {
        const struct drm_connector_helper_funcs *funcs;
        struct drm_encoder *new_encoder;
@@ -275,24 +276,24 @@ update_connector_routing(struct drm_atomic_state *state,
                         connector->base.id,
                         connector->name);

-       if (connector->state->crtc != connector_state->crtc) {
-               if (connector->state->crtc) {
-                       crtc_state = drm_atomic_get_existing_crtc_state(state, 
connector->state->crtc);
+       if (old_connector_state->crtc != new_connector_state->crtc) {
+               if (old_connector_state->crtc) {
+                       crtc_state = drm_atomic_get_existing_crtc_state(state, 
old_connector_state->crtc);
                        crtc_state->connectors_changed = true;
                }

-               if (connector_state->crtc) {
-                       crtc_state = drm_atomic_get_existing_crtc_state(state, 
connector_state->crtc);
+               if (new_connector_state->crtc) {
+                       crtc_state = drm_atomic_get_existing_crtc_state(state, 
new_connector_state->crtc);
                        crtc_state->connectors_changed = true;
                }
        }

-       if (!connector_state->crtc) {
+       if (!new_connector_state->crtc) {
                DRM_DEBUG_ATOMIC("Disabling [CONNECTOR:%d:%s]\n",
                                connector->base.id,
                                connector->name);

-               set_best_encoder(state, connector_state, NULL);
+               set_best_encoder(state, new_connector_state, NULL);

                return 0;
        }
@@ -301,7 +302,7 @@ update_connector_routing(struct drm_atomic_state *state,

        if (funcs->atomic_best_encoder)
                new_encoder = funcs->atomic_best_encoder(connector,
-                                                        connector_state);
+                                                        new_connector_state);
        else if (funcs->best_encoder)
                new_encoder = funcs->best_encoder(connector);
        else
@@ -314,33 +315,33 @@ update_connector_routing(struct drm_atomic_state *state,
                return -EINVAL;
        }

-       if (!drm_encoder_crtc_ok(new_encoder, connector_state->crtc)) {
+       if (!drm_encoder_crtc_ok(new_encoder, new_connector_state->crtc)) {
                DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] incompatible with 
[CRTC:%d]\n",
                                 new_encoder->base.id,
                                 new_encoder->name,
-                                connector_state->crtc->base.id);
+                                new_connector_state->crtc->base.id);
                return -EINVAL;
        }

-       if (new_encoder == connector_state->best_encoder) {
-               set_best_encoder(state, connector_state, new_encoder);
+       if (new_encoder == new_connector_state->best_encoder) {
+               set_best_encoder(state, new_connector_state, new_encoder);

                DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] keeps [ENCODER:%d:%s], now 
on [CRTC:%d:%s]\n",
                                 connector->base.id,
                                 connector->name,
                                 new_encoder->base.id,
                                 new_encoder->name,
-                                connector_state->crtc->base.id,
-                                connector_state->crtc->name);
+                                new_connector_state->crtc->base.id,
+                                new_connector_state->crtc->name);

                return 0;
        }

        steal_encoder(state, new_encoder);

-       set_best_encoder(state, connector_state, new_encoder);
+       set_best_encoder(state, new_connector_state, new_encoder);

-       crtc_state = drm_atomic_get_existing_crtc_state(state, 
connector_state->crtc);
+       crtc_state = drm_atomic_get_existing_crtc_state(state, 
new_connector_state->crtc);
        crtc_state->connectors_changed = true;

        DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] using [ENCODER:%d:%s] on 
[CRTC:%d:%s]\n",
@@ -348,8 +349,8 @@ update_connector_routing(struct drm_atomic_state *state,
                         connector->name,
                         new_encoder->base.id,
                         new_encoder->name,
-                        connector_state->crtc->base.id,
-                        connector_state->crtc->name);
+                        new_connector_state->crtc->base.id,
+                        new_connector_state->crtc->name);

        return 0;
 }
@@ -364,7 +365,7 @@ mode_fixup(struct drm_atomic_state *state)
        int i;
        bool ret;

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                if (!crtc_state->mode_changed &&
                    !crtc_state->connectors_changed)
                        continue;
@@ -372,7 +373,7 @@ mode_fixup(struct drm_atomic_state *state)
                drm_mode_copy(&crtc_state->adjusted_mode, &crtc_state->mode);
        }

-       for_each_connector_in_state(state, connector, conn_state, i) {
+       for_each_new_connector_in_state(state, connector, conn_state, i) {
                const struct drm_encoder_helper_funcs *funcs;
                struct drm_encoder *encoder;

@@ -417,7 +418,7 @@ mode_fixup(struct drm_atomic_state *state)
                }
        }

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

                if (!crtc_state->enable)
@@ -476,19 +477,19 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
                                struct drm_atomic_state *state)
 {
        struct drm_crtc *crtc;
-       struct drm_crtc_state *crtc_state;
+       struct drm_crtc_state *old_crtc_state, *new_crtc_state;
        struct drm_connector *connector;
-       struct drm_connector_state *connector_state;
+       struct drm_connector_state *old_connector_state, *new_connector_state;
        int i, ret;

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
-               if (!drm_mode_equal(&crtc->state->mode, &crtc_state->mode)) {
+       for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, 
new_crtc_state, i) {
+               if (!drm_mode_equal(&old_crtc_state->mode, 
&new_crtc_state->mode)) {
                        DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode changed\n",
                                         crtc->base.id, crtc->name);
-                       crtc_state->mode_changed = true;
+                       new_crtc_state->mode_changed = true;
                }

-               if (crtc->state->enable != crtc_state->enable) {
+               if (old_crtc_state->enable != new_crtc_state->enable) {
                        DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enable changed\n",
                                         crtc->base.id, crtc->name);

@@ -500,8 +501,8 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
                         * The other way around is true as well. enable != 0
                         * iff connectors are attached and a mode is set.
                         */
-                       crtc_state->mode_changed = true;
-                       crtc_state->connectors_changed = true;
+                       new_crtc_state->mode_changed = true;
+                       new_crtc_state->connectors_changed = true;
                }
        }

@@ -509,14 +510,15 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
        if (ret)
                return ret;

-       for_each_connector_in_state(state, connector, connector_state, i) {
+       for_each_oldnew_connector_in_state(state, connector, 
old_connector_state, new_connector_state, i) {
                /*
                 * This only sets crtc->connectors_changed for routing changes,
                 * drivers must set crtc->connectors_changed themselves when
                 * connector properties need to be updated.
                 */
                ret = update_connector_routing(state, connector,
-                                              connector_state);
+                                              old_connector_state,
+                                              new_connector_state);
                if (ret)
                        return ret;
        }
@@ -527,28 +529,28 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
         * configuration. This must be done before calling mode_fixup in case a
         * crtc only changed its mode but has the same set of connectors.
         */
-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, 
new_crtc_state, i) {
                bool has_connectors =
-                       !!crtc_state->connector_mask;
+                       !!new_crtc_state->connector_mask;

                /*
                 * We must set ->active_changed after walking connectors for
                 * otherwise an update that only changes active would result in
                 * a full modeset because update_connector_routing force that.
                 */
-               if (crtc->state->active != crtc_state->active) {
+               if (old_crtc_state->active != new_crtc_state->active) {
                        DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active changed\n",
                                         crtc->base.id, crtc->name);
-                       crtc_state->active_changed = true;
+                       new_crtc_state->active_changed = true;
                }

-               if (!drm_atomic_crtc_needs_modeset(crtc_state))
+               if (!drm_atomic_crtc_needs_modeset(new_crtc_state))
                        continue;

                DRM_DEBUG_ATOMIC("[CRTC:%d:%s] needs all connectors, enable: 
%c, active: %c\n",
                                 crtc->base.id, crtc->name,
-                                crtc_state->enable ? 'y' : 'n',
-                                crtc_state->active ? 'y' : 'n');
+                                new_crtc_state->enable ? 'y' : 'n',
+                                new_crtc_state->active ? 'y' : 'n');

                ret = drm_atomic_add_affected_connectors(state, crtc);
                if (ret != 0)
@@ -558,7 +560,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
                if (ret != 0)
                        return ret;

-               if (crtc_state->enable != has_connectors) {
+               if (new_crtc_state->enable != has_connectors) {
                        DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled/connectors 
mismatch\n",
                                         crtc->base.id, crtc->name);

@@ -599,7 +601,7 @@ drm_atomic_helper_check_planes(struct drm_device *dev,
        if (ret)
                return ret;

-       for_each_plane_in_state(state, plane, plane_state, i) {
+       for_each_new_plane_in_state(state, plane, plane_state, i) {
                const struct drm_plane_helper_funcs *funcs;

                funcs = plane->helper_private;
@@ -617,7 +619,7 @@ drm_atomic_helper_check_planes(struct drm_device *dev,
                }
        }

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

                funcs = crtc->helper_private;
@@ -678,12 +680,12 @@ static void
 disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
 {
        struct drm_connector *connector;
-       struct drm_connector_state *old_conn_state;
+       struct drm_connector_state *old_conn_state, *new_conn_state;
        struct drm_crtc *crtc;
-       struct drm_crtc_state *old_crtc_state;
+       struct drm_crtc_state *old_crtc_state, *new_crtc_state;
        int i;

-       for_each_connector_in_state(old_state, connector, old_conn_state, i) {
+       for_each_oldnew_connector_in_state(old_state, connector, 
old_conn_state, new_conn_state, i) {
                const struct drm_encoder_helper_funcs *funcs;
                struct drm_encoder *encoder;

@@ -720,7 +722,7 @@ disable_outputs(struct drm_device *dev, struct 
drm_atomic_state *old_state)

                /* Right function depends upon target state. */
                if (funcs) {
-                       if (connector->state->crtc && funcs->prepare)
+                       if (new_conn_state->crtc && funcs->prepare)
                                funcs->prepare(encoder);
                        else if (funcs->disable)
                                funcs->disable(encoder);
@@ -731,11 +733,11 @@ disable_outputs(struct drm_device *dev, struct 
drm_atomic_state *old_state)
                drm_bridge_post_disable(encoder->bridge);
        }

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, 
new_crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

                /* Shut down everything that needs a full modeset. */
-               if (!drm_atomic_crtc_needs_modeset(crtc->state))
+               if (!drm_atomic_crtc_needs_modeset(new_crtc_state))
                        continue;

                if (!old_crtc_state->active)
@@ -748,7 +750,7 @@ disable_outputs(struct drm_device *dev, struct 
drm_atomic_state *old_state)


                /* Right function depends upon target state. */
-               if (crtc->state->enable && funcs->prepare)
+               if (new_crtc_state->enable && funcs->prepare)
                        funcs->prepare(crtc);
                else if (funcs->atomic_disable)
                        funcs->atomic_disable(crtc, old_crtc_state);
@@ -777,13 +779,13 @@ drm_atomic_helper_update_legacy_modeset_state(struct 
drm_device *dev,
                                              struct drm_atomic_state 
*old_state)
 {
        struct drm_connector *connector;
-       struct drm_connector_state *old_conn_state;
+       struct drm_connector_state *old_conn_state, *new_conn_state;
        struct drm_crtc *crtc;
-       struct drm_crtc_state *old_crtc_state;
+       struct drm_crtc_state *crtc_state;
        int i;

        /* clear out existing links and update dpms */
-       for_each_connector_in_state(old_state, connector, old_conn_state, i) {
+       for_each_oldnew_connector_in_state(old_state, connector, 
old_conn_state, new_conn_state, i) {
                if (connector->encoder) {
                        WARN_ON(!connector->encoder->crtc);

@@ -791,7 +793,7 @@ drm_atomic_helper_update_legacy_modeset_state(struct 
drm_device *dev,
                        connector->encoder = NULL;
                }

-               crtc = connector->state->crtc;
+               crtc = new_conn_state->crtc;
                if ((!crtc && old_conn_state->crtc) ||
                    (crtc && drm_atomic_crtc_needs_modeset(crtc->state))) {
                        struct drm_property *dpms_prop =
@@ -808,23 +810,23 @@ drm_atomic_helper_update_legacy_modeset_state(struct 
drm_device *dev,
        }

        /* set new links */
-       for_each_connector_in_state(old_state, connector, old_conn_state, i) {
-               if (!connector->state->crtc)
+       for_each_new_connector_in_state(old_state, connector, new_conn_state, 
i) {
+               if (!new_conn_state->crtc)
                        continue;

-               if (WARN_ON(!connector->state->best_encoder))
+               if (WARN_ON(!new_conn_state->best_encoder))
                        continue;

-               connector->encoder = connector->state->best_encoder;
-               connector->encoder->crtc = connector->state->crtc;
+               connector->encoder = new_conn_state->best_encoder;
+               connector->encoder->crtc = new_conn_state->crtc;
        }

        /* set legacy state in the crtc structure */
-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_new_crtc_in_state(old_state, crtc, crtc_state, i) {
                struct drm_plane *primary = crtc->primary;

-               crtc->mode = crtc->state->mode;
-               crtc->enabled = crtc->state->enable;
+               crtc->mode = crtc_state->mode;
+               crtc->enabled = crtc_state->enable;

                if (drm_atomic_get_existing_plane_state(old_state, primary) &&
                    primary->state->crtc == crtc) {
@@ -832,9 +834,9 @@ drm_atomic_helper_update_legacy_modeset_state(struct 
drm_device *dev,
                        crtc->y = primary->state->src_y >> 16;
                }

-               if (crtc->state->enable)
+               if (crtc_state->enable)
                        drm_calc_timestamping_constants(crtc,
-                                                       
&crtc->state->adjusted_mode);
+                                                       
&crtc_state->adjusted_mode);
        }
 }
 EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state);
@@ -843,20 +845,20 @@ static void
 crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state)
 {
        struct drm_crtc *crtc;
-       struct drm_crtc_state *old_crtc_state;
+       struct drm_crtc_state *crtc_state;
        struct drm_connector *connector;
-       struct drm_connector_state *old_conn_state;
+       struct drm_connector_state *conn_state;
        int i;

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_new_crtc_in_state(old_state, crtc, crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

-               if (!crtc->state->mode_changed)
+               if (!crtc_state->mode_changed)
                        continue;

                funcs = crtc->helper_private;

-               if (crtc->state->enable && funcs->mode_set_nofb) {
+               if (crtc_state->enable && funcs->mode_set_nofb) {
                        DRM_DEBUG_ATOMIC("modeset on [CRTC:%d:%s]\n",
                                         crtc->base.id, crtc->name);

@@ -864,18 +866,18 @@ crtc_set_mode(struct drm_device *dev, struct 
drm_atomic_state *old_state)
                }
        }

-       for_each_connector_in_state(old_state, connector, old_conn_state, i) {
+       for_each_new_connector_in_state(old_state, connector, conn_state, i) {
                const struct drm_encoder_helper_funcs *funcs;
                struct drm_crtc_state *new_crtc_state;
                struct drm_encoder *encoder;
                struct drm_display_mode *mode, *adjusted_mode;

-               if (!connector->state->best_encoder)
+               if (!conn_state->best_encoder)
                        continue;

-               encoder = connector->state->best_encoder;
+               encoder = conn_state->best_encoder;
                funcs = encoder->helper_private;
-               new_crtc_state = connector->state->crtc->state;
+               new_crtc_state = conn_state->crtc->state;
                mode = &new_crtc_state->mode;
                adjusted_mode = &new_crtc_state->adjusted_mode;

@@ -891,7 +893,7 @@ crtc_set_mode(struct drm_device *dev, struct 
drm_atomic_state *old_state)
                 */
                if (funcs && funcs->atomic_mode_set) {
                        funcs->atomic_mode_set(encoder, new_crtc_state,
-                                              connector->state);
+                                              conn_state);
                } else if (funcs && funcs->mode_set) {
                        funcs->mode_set(encoder, mode, adjusted_mode);
                }
@@ -943,24 +945,24 @@ void drm_atomic_helper_commit_modeset_enables(struct 
drm_device *dev,
                                              struct drm_atomic_state 
*old_state)
 {
        struct drm_crtc *crtc;
-       struct drm_crtc_state *old_crtc_state;
+       struct drm_crtc_state *crtc_state;
        struct drm_connector *connector;
-       struct drm_connector_state *old_conn_state;
+       struct drm_connector_state *conn_state;
        int i;

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_new_crtc_in_state(old_state, crtc, crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

                /* Need to filter out CRTCs where only planes change. */
-               if (!drm_atomic_crtc_needs_modeset(crtc->state))
+               if (!drm_atomic_crtc_needs_modeset(crtc_state))
                        continue;

-               if (!crtc->state->active)
+               if (!crtc_state->active)
                        continue;

                funcs = crtc->helper_private;

-               if (crtc->state->enable) {
+               if (crtc_state->enable) {
                        DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n",
                                         crtc->base.id, crtc->name);

@@ -971,18 +973,18 @@ void drm_atomic_helper_commit_modeset_enables(struct 
drm_device *dev,
                }
        }

-       for_each_connector_in_state(old_state, connector, old_conn_state, i) {
+       for_each_new_connector_in_state(old_state, connector, conn_state, i) {
                const struct drm_encoder_helper_funcs *funcs;
                struct drm_encoder *encoder;

-               if (!connector->state->best_encoder)
+               if (!conn_state->best_encoder)
                        continue;

-               if (!connector->state->crtc->state->active ||
-                   
!drm_atomic_crtc_needs_modeset(connector->state->crtc->state))
+               if (!conn_state->crtc->state->active ||
+                   !drm_atomic_crtc_needs_modeset(conn_state->crtc->state))
                        continue;

-               encoder = connector->state->best_encoder;
+               encoder = conn_state->best_encoder;
                funcs = encoder->helper_private;

                DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n",
@@ -1027,10 +1029,7 @@ int drm_atomic_helper_wait_for_fences(struct drm_device 
*dev,
        struct drm_plane_state *plane_state;
        int i, ret;

-       for_each_plane_in_state(state, plane, plane_state, i) {
-               if (!pre_swap)
-                       plane_state = plane->state;
-
+       for_each_new_plane_in_state(state, plane, plane_state, i) {
                if (!plane_state->fence)
                        continue;

@@ -1072,15 +1071,15 @@ bool drm_atomic_helper_framebuffer_changed(struct 
drm_device *dev,
                                           struct drm_crtc *crtc)
 {
        struct drm_plane *plane;
-       struct drm_plane_state *old_plane_state;
+       struct drm_plane_state *old_plane_state, *new_plane_state;
        int i;

-       for_each_plane_in_state(old_state, plane, old_plane_state, i) {
-               if (plane->state->crtc != crtc &&
+       for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, 
new_plane_state, i) {
+               if (new_plane_state->crtc != crtc &&
                    old_plane_state->crtc != crtc)
                        continue;

-               if (plane->state->fb != old_plane_state->fb)
+               if (new_plane_state->fb != old_plane_state->fb)
                        return true;
        }

@@ -1104,21 +1103,21 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device 
*dev,
                struct drm_atomic_state *old_state)
 {
        struct drm_crtc *crtc;
-       struct drm_crtc_state *old_crtc_state;
+       struct drm_crtc_state *old_crtc_state, *new_crtc_state;
        int i, ret;

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       /* Legacy cursor ioctls are completely unsynced, and userspace
+        * relies on that (by doing tons of cursor updates). */
+       if (old_state->legacy_cursor_update)
+               return;
+
+       for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, 
new_crtc_state, i) {
                /* No one cares about the old state, so abuse it for tracking
                 * and store whether we hold a vblank reference (and should do a
                 * vblank wait) in the ->enable boolean. */
                old_crtc_state->enable = false;

-               if (!crtc->state->enable)
-                       continue;
-
-               /* Legacy cursor ioctls are completely unsynced, and userspace
-                * relies on that (by doing tons of cursor updates). */
-               if (old_state->legacy_cursor_update)
+               if (!new_crtc_state->enable)
                        continue;

                if (!drm_atomic_helper_framebuffer_changed(dev,
@@ -1133,7 +1132,7 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
                old_crtc_state->last_vblank_count = drm_crtc_vblank_count(crtc);
        }

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) {
                if (!old_crtc_state->enable)
                        continue;

@@ -1432,11 +1431,11 @@ int drm_atomic_helper_setup_commit(struct 
drm_atomic_state *state,
                                   bool nonblock)
 {
        struct drm_crtc *crtc;
-       struct drm_crtc_state *crtc_state;
+       struct drm_crtc_state *old_crtc_state, *crtc_state;
        struct drm_crtc_commit *commit;
        int i, ret;

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, crtc_state, 
i) {
                commit = kzalloc(sizeof(*commit), GFP_KERNEL);
                if (!commit)
                        return -ENOMEM;
@@ -1457,7 +1456,7 @@ int drm_atomic_helper_setup_commit(struct 
drm_atomic_state *state,
                /* Drivers only send out events when at least either current or
                 * new CRTC state is active. Complete right away if everything
                 * stays off. */
-               if (!crtc->state->active && !crtc_state->active) {
+               if (!old_crtc_state->active && !crtc_state->active) {
                        complete_all(&commit->flip_done);
                        continue;
                }
@@ -1521,7 +1520,7 @@ void drm_atomic_helper_wait_for_dependencies(struct 
drm_atomic_state *state)
        int i;
        long ret;

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                spin_lock(&crtc->commit_lock);
                commit = preceeding_commit(crtc);
                if (commit)
@@ -1572,13 +1571,13 @@ void drm_atomic_helper_commit_hw_done(struct 
drm_atomic_state *state)
        struct drm_crtc_commit *commit;
        int i;

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                commit = state->crtcs[i].commit;
                if (!commit)
                        continue;

                /* backend must have consumed any event by now */
-               WARN_ON(crtc->state->event);
+               WARN_ON(crtc_state->event);
                spin_lock(&crtc->commit_lock);
                complete_all(&commit->hw_done);
                spin_unlock(&crtc->commit_lock);
@@ -1605,7 +1604,7 @@ void drm_atomic_helper_commit_cleanup_done(struct 
drm_atomic_state *state)
        int i;
        long ret;

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                commit = state->crtcs[i].commit;
                if (WARN_ON(!commit))
                        continue;
@@ -1658,7 +1657,7 @@ int drm_atomic_helper_prepare_planes(struct drm_device 
*dev,
        struct drm_plane_state *plane_state;
        int ret, i, j;

-       for_each_plane_in_state(state, plane, plane_state, i) {
+       for_each_new_plane_in_state(state, plane, plane_state, i) {
                const struct drm_plane_helper_funcs *funcs;

                funcs = plane->helper_private;
@@ -1676,7 +1675,7 @@ int drm_atomic_helper_prepare_planes(struct drm_device 
*dev,
        return 0;

 fail:
-       for_each_plane_in_state(state, plane, plane_state, j) {
+       for_each_new_plane_in_state(state, plane, plane_state, j) {
                const struct drm_plane_helper_funcs *funcs;

                if (j >= i)
@@ -1746,14 +1745,14 @@ void drm_atomic_helper_commit_planes(struct drm_device 
*dev,
                                     uint32_t flags)
 {
        struct drm_crtc *crtc;
-       struct drm_crtc_state *old_crtc_state;
+       struct drm_crtc_state *old_crtc_state, *new_crtc_state;
        struct drm_plane *plane;
-       struct drm_plane_state *old_plane_state;
+       struct drm_plane_state *old_plane_state, *new_plane_state;
        int i;
        bool active_only = flags & DRM_PLANE_COMMIT_ACTIVE_ONLY;
        bool no_disable = flags & DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET;

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, 
new_crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

                funcs = crtc->helper_private;
@@ -1761,13 +1760,13 @@ void drm_atomic_helper_commit_planes(struct drm_device 
*dev,
                if (!funcs || !funcs->atomic_begin)
                        continue;

-               if (active_only && !crtc->state->active)
+               if (active_only && !new_crtc_state->active)
                        continue;

                funcs->atomic_begin(crtc, old_crtc_state);
        }

-       for_each_plane_in_state(old_state, plane, old_plane_state, i) {
+       for_each_oldnew_plane_in_state(old_state, plane, old_plane_state, 
new_plane_state, i) {
                const struct drm_plane_helper_funcs *funcs;
                bool disabling;

@@ -1786,7 +1785,7 @@ void drm_atomic_helper_commit_planes(struct drm_device 
*dev,
                         * CRTC to avoid skipping planes being disabled on an
                         * active CRTC.
                         */
-                       if (!disabling && !plane_crtc_active(plane->state))
+                       if (!disabling && !plane_crtc_active(new_plane_state))
                                continue;
                        if (disabling && !plane_crtc_active(old_plane_state))
                                continue;
@@ -1805,12 +1804,12 @@ void drm_atomic_helper_commit_planes(struct drm_device 
*dev,
                                continue;

                        funcs->atomic_disable(plane, old_plane_state);
-               } else if (plane->state->crtc || disabling) {
+               } else if (new_plane_state->crtc || disabling) {
                        funcs->atomic_update(plane, old_plane_state);
                }
        }

-       for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+       for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, 
new_crtc_state, i) {
                const struct drm_crtc_helper_funcs *funcs;

                funcs = crtc->helper_private;
@@ -1818,7 +1817,7 @@ void drm_atomic_helper_commit_planes(struct drm_device 
*dev,
                if (!funcs || !funcs->atomic_flush)
                        continue;

-               if (active_only && !crtc->state->active)
+               if (active_only && !new_crtc_state->active)
                        continue;

                funcs->atomic_flush(crtc, old_crtc_state);
@@ -1945,12 +1944,19 @@ void drm_atomic_helper_cleanup_planes(struct drm_device 
*dev,
                                      struct drm_atomic_state *old_state)
 {
        struct drm_plane *plane;
-       struct drm_plane_state *plane_state;
+       struct drm_plane_state *plane_state, *new_plane_state;
        int i;

-       for_each_plane_in_state(old_state, plane, plane_state, i) {
+       for_each_oldnew_plane_in_state(old_state, plane, plane_state, 
new_plane_state, i) {
                const struct drm_plane_helper_funcs *funcs;

+               /*
+                * This might be called before swapping when commit is aborted,
+                * in which case we have to free the new state.
+                */
+               if (plane_state == plane->state)
+                       plane_state = new_plane_state;
+
                if (!drm_atomic_helper_framebuffer_changed(dev, old_state, 
plane_state->crtc))
                        continue;

@@ -1998,15 +2004,15 @@ void drm_atomic_helper_swap_state(struct 
drm_atomic_state *state,
        int i;
        long ret;
        struct drm_connector *connector;
-       struct drm_connector_state *conn_state;
+       struct drm_connector_state *old_conn_state, *new_conn_state;
        struct drm_crtc *crtc;
-       struct drm_crtc_state *crtc_state;
+       struct drm_crtc_state *old_crtc_state, *new_crtc_state;
        struct drm_plane *plane;
-       struct drm_plane_state *plane_state;
+       struct drm_plane_state *old_plane_state, *new_plane_state;
        struct drm_crtc_commit *commit;

        if (stall) {
-               for_each_crtc_in_state(state, crtc, crtc_state, i) {
+               for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
                        spin_lock(&crtc->commit_lock);
                        commit = list_first_entry_or_null(&crtc->commit_list,
                                        struct drm_crtc_commit, commit_entry);
@@ -2026,16 +2032,20 @@ void drm_atomic_helper_swap_state(struct 
drm_atomic_state *state,
                }
        }

-       for_each_connector_in_state(state, connector, conn_state, i) {
-               connector->state->state = state;
-               swap(state->connectors[i].state, connector->state);
-               connector->state->state = NULL;
+       for_each_oldnew_connector_in_state(state, connector, old_conn_state, 
new_conn_state, i) {
+               old_conn_state->state = state;
+               new_conn_state->state = NULL;
+
+               state->connectors[i].state = old_conn_state;
+               connector->state = new_conn_state;
        }

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
-               crtc->state->state = state;
-               swap(state->crtcs[i].state, crtc->state);
-               crtc->state->state = NULL;
+       for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, 
new_crtc_state, i) {
+               old_crtc_state->state = state;
+               new_crtc_state->state = NULL;
+
+               state->crtcs[i].state = old_crtc_state;
+               crtc->state = new_crtc_state;

                if (state->crtcs[i].commit) {
                        spin_lock(&crtc->commit_lock);
@@ -2047,10 +2057,12 @@ void drm_atomic_helper_swap_state(struct 
drm_atomic_state *state,
                }
        }

-       for_each_plane_in_state(state, plane, plane_state, i) {
-               plane->state->state = state;
-               swap(state->planes[i].state, plane->state);
-               plane->state->state = NULL;
+       for_each_oldnew_plane_in_state(state, plane, old_plane_state, 
new_plane_state, i) {
+               old_plane_state->state = state;
+               new_plane_state->state = NULL;
+
+               state->planes[i].state = old_plane_state;
+               plane->state = new_plane_state;
        }
 }
 EXPORT_SYMBOL(drm_atomic_helper_swap_state);
@@ -2248,7 +2260,7 @@ static int update_output_state(struct drm_atomic_state 
*state,
        if (ret)
                return ret;

-       for_each_connector_in_state(state, connector, conn_state, i) {
+       for_each_new_connector_in_state(state, connector, conn_state, i) {
                if (conn_state->crtc == set->crtc) {
                        ret = drm_atomic_set_crtc_for_connector(conn_state,
                                                                NULL);
@@ -2270,7 +2282,7 @@ static int update_output_state(struct drm_atomic_state 
*state,
                        return ret;
        }

-       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+       for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
                /* Don't update ->enable for the CRTC in the set_config request,
                 * since a mismatch would indicate a bug in the upper layers.
                 * The actual modeset code later on will catch any
-- 
2.7.4

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