drm: Drop connector argument from __drm_atomic_helper_connector_destroy_state

It's unused, and really this helper should only look at the state
structure and nothing else. Note that this conflicts with a patch from
Dave that adds refcounting to drm_connectors. It's not yet clear
whether the check Dave adds for connector != NULL is really needed or
the right check.

v2: Fix commmit message (Laurent).

Cc: Dave Airlie <airlied@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462804451-15318-3-git-send-email-daniel.vetter@ffwll.ch

drivers/gpu/drm/drm_atomic_helper.c

@@ -2756,8 +2756,7 @@ void drm_atomic_helper_connector_reset(struct drm_connector *connector)
 		kzalloc(sizeof(*conn_state), GFP_KERNEL);
 
 	if (connector->state)
-		__drm_atomic_helper_connector_destroy_state(connector,
-							    connector->state);
+		__drm_atomic_helper_connector_destroy_state(connector->state);
 
 	kfree(connector->state);
 	__drm_atomic_helper_connector_reset(connector, conn_state);
@@ -2890,7 +2889,6 @@ EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
 
 /**
  * __drm_atomic_helper_connector_destroy_state - release connector state
- * @connector: connector object
  * @state: connector state object to release
  *
  * Releases all resources stored in the connector state without actually
@@ -2898,8 +2896,7 @@ EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
  * subclass the connector state.
  */
 void
-__drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
-					    struct drm_connector_state *state)
+__drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state)
 {
 	/*
 	 * This is currently a placeholder so that drivers that subclass the
@@ -2922,7 +2919,7 @@ EXPORT_SYMBOL(__drm_atomic_helper_connector_destroy_state);
 void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
 					  struct drm_connector_state *state)
 {
-	__drm_atomic_helper_connector_destroy_state(connector, state);
+	__drm_atomic_helper_connector_destroy_state(state);
 	kfree(state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state);

include/drm/drm_atomic_helper.h

@@ -144,8 +144,7 @@ struct drm_atomic_state *
 drm_atomic_helper_duplicate_state(struct drm_device *dev,
 				  struct drm_modeset_acquire_ctx *ctx);
 void
-__drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
-					    struct drm_connector_state *state);
+__drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state);
 void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
 					  struct drm_connector_state *state);
 void drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,