drm/i915: use drm_connector_list_iter in intel_opregion.c

One case where I nuked a now unecessary locking, otherwise all just
boring stuff.

v2: Rebase onto the iter_get/put->iter_begin/end rename.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170301095226.30584-3-daniel.vetter@ffwll.ch

drivers/gpu/drm/i915/intel_opregion.c

@@ -434,6 +434,7 @@ int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
 {
 	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
 	struct opregion_asle *asle = dev_priv->opregion.asle;
 	struct drm_device *dev = &dev_priv->drm;
 
@@ -458,8 +459,10 @@ static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
 	 * only one).
 	 */
 	DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
-	for_each_intel_connector(dev, connector)
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter)
 		intel_panel_set_backlight_acpi(connector, bclp, 255);
+	drm_connector_list_iter_end(&conn_iter);
 	asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
 
 	drm_modeset_unlock(&dev->mode_config.connection_mutex);
@@ -701,6 +704,7 @@ static void intel_didl_outputs(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
 	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
 	int i = 0, max_outputs;
 	int display_index[16] = {};
 
@@ -714,7 +718,8 @@ static void intel_didl_outputs(struct drm_i915_private *dev_priv)
 	max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
 		ARRAY_SIZE(opregion->acpi->did2);
 
-	for_each_intel_connector(&dev_priv->drm, connector) {
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
 		u32 device_id, type;
 
 		device_id = acpi_display_type(connector);
@@ -729,6 +734,7 @@ static void intel_didl_outputs(struct drm_i915_private *dev_priv)
 			set_did(opregion, i, device_id);
 		i++;
 	}
+	drm_connector_list_iter_end(&conn_iter);
 
 	DRM_DEBUG_KMS("%d outputs detected\n", i);
 
@@ -745,6 +751,7 @@ static void intel_setup_cadls(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
 	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
 	int i = 0;
 
 	/*
@@ -757,11 +764,13 @@ static void intel_setup_cadls(struct drm_i915_private *dev_priv)
 	 * Note that internal panels should be at the front of the connector
 	 * list already, ensuring they're not left out.
 	 */
-	for_each_intel_connector(&dev_priv->drm, connector) {
+	drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
 		if (i >= ARRAY_SIZE(opregion->acpi->cadl))
 			break;
 		opregion->acpi->cadl[i++] = connector->acpi_device_id;
 	}
+	drm_connector_list_iter_end(&conn_iter);
 
 	/* If fewer than 8 active devices, the list must be null terminated */
 	if (i < ARRAY_SIZE(opregion->acpi->cadl))