[PATCH v3 2/7] drm/atomic: Make add_affected_connectors look at crtc_state.

[Maarten Lankhorst]

This kills another dereference of connector->state. connector_mask
holds all unchanged connectors at least and any changed connectors
are already in state anyway.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/drm_atomic.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 1c1cbf436717..18cdf2c956c6 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1419,8 +1419,13 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
 	struct drm_connector *connector;
 	struct drm_connector_state *conn_state;
 	struct drm_connector_list_iter conn_iter;
+	struct drm_crtc_state *crtc_state;
 	int ret;
 
+	crtc_state = drm_atomic_get_crtc_state(state, crtc);
+	if (IS_ERR(crtc_state))
+		return PTR_ERR(crtc_state);
+
 	ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
 	if (ret)
 		return ret;
@@ -1429,12 +1434,12 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
 			 crtc->base.id, crtc->name, state);
 
 	/*
-	 * Changed connectors are already in @state, so only need to look at the
-	 * current configuration.
+	 * Changed connectors are already in @state, so only need to look
+	 * at the connector_mask in crtc_state.
 	 */
 	drm_connector_list_iter_get(state->dev, &conn_iter);
 	drm_for_each_connector_iter(connector, &conn_iter) {
-		if (connector->state->crtc != crtc)
+		if (!(crtc_state->connector_mask & (1 << drm_connector_index(connector))))
 			continue;
 
 		conn_state = drm_atomic_get_connector_state(state, connector);
-- 
2.7.4