3 files changed, 27 insertions, 20 deletions

diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
index ce09799976ef..f476b2f1eb35 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -170,7 +170,6 @@ static int rvin_group_link_notify(struct media_link *link, u32 flags,
 
 	if (csi_id == -ENODEV) {
 		struct v4l2_subdev *sd;
-		unsigned int i;
 
 		/*
 		 * Make sure the source entity subdevice is registered as
@@ -268,8 +267,8 @@ static int rvin_group_init(struct rvin_group *group, struct rvin_dev *vin)
 	match = of_match_node(vin->dev->driver->of_match_table,
 			      vin->dev->of_node);
 
-	strlcpy(mdev->driver_name, KBUILD_MODNAME, sizeof(mdev->driver_name));
-	strlcpy(mdev->model, match->compatible, sizeof(mdev->model));
+	strscpy(mdev->driver_name, KBUILD_MODNAME, sizeof(mdev->driver_name));
+	strscpy(mdev->model, match->compatible, sizeof(mdev->model));
 	snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
 		 dev_name(mdev->dev));
 
@@ -476,7 +475,7 @@ static int rvin_parallel_subdevice_attach(struct rvin_dev *vin,
 		return ret;
 
 	ret = v4l2_ctrl_add_handler(&vin->ctrl_handler, subdev->ctrl_handler,
-				    NULL);
+				    NULL, true);
 	if (ret < 0) {
 		v4l2_ctrl_handler_free(&vin->ctrl_handler);
 		return ret;
@@ -611,6 +610,8 @@ static int rvin_parallel_init(struct rvin_dev *vin)
 {
 	int ret;
 
+	v4l2_async_notifier_init(&vin->notifier);
+
 	ret = v4l2_async_notifier_parse_fwnode_endpoints_by_port(
 		vin->dev, &vin->notifier, sizeof(struct rvin_parallel_entity),
 		0, rvin_parallel_parse_v4l2);
@@ -803,6 +804,8 @@ static int rvin_mc_parse_of_graph(struct rvin_dev *vin)
 		return 0;
 	}
 
+	v4l2_async_notifier_init(&vin->group->notifier);
+
 	/*
 	 * Have all VIN's look for CSI-2 subdevices. Some subdevices will
 	 * overlap but the parser function can handle it, so each subdevice
@@ -824,7 +827,7 @@ static int rvin_mc_parse_of_graph(struct rvin_dev *vin)
 
 	mutex_unlock(&vin->group->lock);
 
-	if (!vin->group->notifier.num_subdevs)
+	if (list_empty(&vin->group->notifier.asd_list))
 		return 0;
 
 	vin->group->notifier.ops = &rvin_group_notify_ops;
diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
index dc5ae8025832..b0044a08e71e 100644
--- a/drivers/media/platform/rcar-vin/rcar-csi2.c
+++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
@@ -714,7 +714,7 @@ static int rcsi2_parse_v4l2(struct rcar_csi2 *priv,
 	if (vep->base.port || vep->base.id)
 		return -ENOTCONN;
 
-	if (vep->bus_type != V4L2_MBUS_CSI2) {
+	if (vep->bus_type != V4L2_MBUS_CSI2_DPHY) {
 		dev_err(priv->dev, "Unsupported bus: %u\n", vep->bus_type);
 		return -EINVAL;
 	}
@@ -743,7 +743,7 @@ static int rcsi2_parse_v4l2(struct rcar_csi2 *priv,
 static int rcsi2_parse_dt(struct rcar_csi2 *priv)
 {
 	struct device_node *ep;
-	struct v4l2_fwnode_endpoint v4l2_ep;
+	struct v4l2_fwnode_endpoint v4l2_ep = { .bus_type = 0 };
 	int ret;
 
 	ep = of_graph_get_endpoint_by_regs(priv->dev->of_node, 0, 0);
@@ -771,21 +771,25 @@ static int rcsi2_parse_dt(struct rcar_csi2 *priv)
 
 	of_node_put(ep);
 
-	priv->notifier.subdevs = devm_kzalloc(priv->dev,
-					      sizeof(*priv->notifier.subdevs),
-					      GFP_KERNEL);
-	if (!priv->notifier.subdevs)
-		return -ENOMEM;
+	v4l2_async_notifier_init(&priv->notifier);
+
+	ret = v4l2_async_notifier_add_subdev(&priv->notifier, &priv->asd);
+	if (ret) {
+		fwnode_handle_put(priv->asd.match.fwnode);
+		return ret;
+	}
 
-	priv->notifier.num_subdevs = 1;
-	priv->notifier.subdevs[0] = &priv->asd;
 	priv->notifier.ops = &rcar_csi2_notify_ops;
 
 	dev_dbg(priv->dev, "Found '%pOF'\n",
 		to_of_node(priv->asd.match.fwnode));
 
-	return v4l2_async_subdev_notifier_register(&priv->subdev,
-						   &priv->notifier);
+	ret = v4l2_async_subdev_notifier_register(&priv->subdev,
+						  &priv->notifier);
+	if (ret)
+		v4l2_async_notifier_cleanup(&priv->notifier);
+
+	return ret;
 }
 
 /* -----------------------------------------------------------------------------
diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index 5a54779cfc27..dc77682b4785 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -238,8 +238,8 @@ static int rvin_querycap(struct file *file, void *priv,
 {
 	struct rvin_dev *vin = video_drvdata(file);
 
-	strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
-	strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card));
+	strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
+	strscpy(cap->card, "R_Car_VIN", sizeof(cap->card));
 	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 		 dev_name(vin->dev));
 	return 0;
@@ -440,7 +440,7 @@ static int rvin_enum_input(struct file *file, void *priv,
 		i->std = vin->vdev.tvnorms;
 	}
 
-	strlcpy(i->name, "Camera", sizeof(i->name));
+	strscpy(i->name, "Camera", sizeof(i->name));
 
 	return 0;
 }
@@ -714,7 +714,7 @@ static int rvin_mc_enum_input(struct file *file, void *priv,
 		return -EINVAL;
 
 	i->type = V4L2_INPUT_TYPE_CAMERA;
-	strlcpy(i->name, "Camera", sizeof(i->name));
+	strscpy(i->name, "Camera", sizeof(i->name));
 
 	return 0;
 }