From 5351bbdd19a6fe01b1d9fef835d3b3f38cba1461 Mon Sep 17 00:00:00 2001
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date: Mon, 16 Jan 2017 10:37:39 +0100
Subject: [PATCH] drm/atomic: Make add_affected_connectors look at crtc_state.
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@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1484559464-27107-3-git-send-email-maarten.lankhorst@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 28f192a0eb8e0..849eeefd19602 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1414,8 +1414,13 @@ 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;
@@ -1424,12 +1429,12 @@ 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);
--
2.30.2