[v2,14/14] media: v4l2-async: Improve v4l2_async_notifier_add_*_subdev() API

diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
index c82c1493e099..c31858548d34 100644
--- a/drivers/media/i2c/max9286.c
+++ b/drivers/media/i2c/max9286.c
@@ -580,7 +580,7 @@  static int max9286_v4l2_notifier_register(struct max9286_priv *priv)
 
 		asd = v4l2_async_notifier_add_fwnode_subdev(&priv->notifier,
 							    source->fwnode,
-							    sizeof(*asd));
+							    struct v4l2_async_subdev);
 		if (IS_ERR(asd)) {
 			dev_err(dev, "Failed to add subdev for source %u: %ld",
 				i, PTR_ERR(asd));
diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c
index 9e04ff02257c..bd0aff878159 100644
--- a/drivers/media/i2c/st-mipid02.c
+++ b/drivers/media/i2c/st-mipid02.c
@@ -879,7 +879,7 @@  static int mipid02_parse_rx_ep(struct mipid02_dev *bridge)
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
 					&bridge->notifier,
 					of_fwnode_handle(ep_node),
-					sizeof(*asd));
+					struct v4l2_async_subdev);
 	of_node_put(ep_node);
 
 	if (IS_ERR(asd)) {
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
index c1d42cbecbc1..9707db0bfa60 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
@@ -1468,7 +1468,6 @@  static int cio2_parse_firmware(struct cio2_device *cio2)
 			.bus_type = V4L2_MBUS_CSI2_DPHY
 		};
 		struct sensor_async_subdev *s_asd;
-		struct v4l2_async_subdev *asd;
 		struct fwnode_handle *ep;
 
 		ep = fwnode_graph_get_endpoint_by_id(
@@ -1482,14 +1481,13 @@  static int cio2_parse_firmware(struct cio2_device *cio2)
 		if (ret)
 			goto err_parse;
 
-		asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-				&cio2->notifier, ep, sizeof(*s_asd));
-		if (IS_ERR(asd)) {
-			ret = PTR_ERR(asd);
+		s_asd = v4l2_async_notifier_add_fwnode_remote_subdev(
+				&cio2->notifier, ep, struct sensor_async_subdev);
+		if (IS_ERR(s_asd)) {
+			ret = PTR_ERR(s_asd);
 			goto err_parse;
 		}
 
-		s_asd = container_of(asd, struct sensor_async_subdev, asd);
 		s_asd->csi2.port = vep.base.port;
 		s_asd->csi2.lanes = vep.bus.mipi_csi2.num_data_lanes;
 
diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
index 0fb9f9ba1219..6cdc77dda0e4 100644
--- a/drivers/media/platform/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/am437x/am437x-vpfe.c
@@ -2365,7 +2365,7 @@  vpfe_get_pdata(struct vpfe_device *vpfe)
 
 		pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
 			&vpfe->notifier, of_fwnode_handle(rem),
-			sizeof(struct v4l2_async_subdev));
+			struct v4l2_async_subdev);
 		of_node_put(rem);
 		if (IS_ERR(pdata->asd[i]))
 			goto cleanup;
diff --git a/drivers/media/platform/atmel/atmel-isi.c b/drivers/media/platform/atmel/atmel-isi.c
index c1a6dd7af002..0514be6153df 100644
--- a/drivers/media/platform/atmel/atmel-isi.c
+++ b/drivers/media/platform/atmel/atmel-isi.c
@@ -1150,7 +1150,7 @@  static int isi_graph_init(struct atmel_isi *isi)
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
 						&isi->notifier,
 						of_fwnode_handle(ep),
-						sizeof(*asd));
+						struct v4l2_async_subdev);
 	of_node_put(ep);
 
 	if (IS_ERR(asd))
diff --git a/drivers/media/platform/atmel/atmel-sama5d2-isc.c b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
index 9ee2cd194f93..0b78fecfd2a8 100644
--- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
+++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
@@ -214,7 +214,7 @@  static int atmel_isc_probe(struct platform_device *pdev)
 		asd = v4l2_async_notifier_add_fwnode_remote_subdev(
 					&subdev_entity->notifier,
 					of_fwnode_handle(subdev_entity->epn),
-					sizeof(*asd));
+					struct v4l2_async_subdev);
 
 		of_node_put(subdev_entity->epn);
 		subdev_entity->epn = NULL;
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 7d299cacef8c..c68a3eac62cd 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -398,7 +398,8 @@  static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx)
 	v4l2_async_notifier_init(&csi2rx->notifier);
 
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(&csi2rx->notifier,
-							   fwh, sizeof(*asd));
+							   fwh,
+							   struct v4l2_async_subdev);
 	of_node_put(ep);
 	if (IS_ERR(asd))
 		return PTR_ERR(asd);
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index 72a0e94e2e21..8d2e165bf7de 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -1584,7 +1584,7 @@  vpif_capture_get_pdata(struct platform_device *pdev)
 
 		pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
 			&vpif_obj.notifier, of_fwnode_handle(rem),
-			sizeof(struct v4l2_async_subdev));
+			struct v4l2_async_subdev);
 		if (IS_ERR(pdata->asd[i]))
 			goto err_cleanup;
 
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index de26ecdcfe81..abe59f278db1 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -466,7 +466,8 @@  static int fimc_md_parse_one_endpoint(struct fimc_md *fmd,
 	}
 
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-		&fmd->subdev_notifier, of_fwnode_handle(ep), sizeof(*asd));
+		&fmd->subdev_notifier, of_fwnode_handle(ep),
+		struct v4l2_async_subdev);
 
 	of_node_put(ep);
 
diff --git a/drivers/media/platform/marvell-ccic/cafe-driver.c b/drivers/media/platform/marvell-ccic/cafe-driver.c
index 91d65f71be96..9c94a8b58b7c 100644
--- a/drivers/media/platform/marvell-ccic/cafe-driver.c
+++ b/drivers/media/platform/marvell-ccic/cafe-driver.c
@@ -552,7 +552,7 @@  static int cafe_pci_probe(struct pci_dev *pdev,
 	asd = v4l2_async_notifier_add_i2c_subdev(&mcam->notifier,
 					i2c_adapter_id(cam->i2c_adapter),
 					ov7670_info.addr,
-					sizeof(*asd));
+					struct v4l2_async_subdev);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
 		goto out_smbus_shutdown;
diff --git a/drivers/media/platform/marvell-ccic/mmp-driver.c b/drivers/media/platform/marvell-ccic/mmp-driver.c
index 40d9fc4a731a..f2f09cea751d 100644
--- a/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -241,8 +241,8 @@  static int mmpcam_probe(struct platform_device *pdev)
 
 	v4l2_async_notifier_init(&mcam->notifier);
 
-	asd = v4l2_async_notifier_add_fwnode_remote_subdev(&mcam->notifier,
-							   ep, sizeof(*asd));
+	asd = v4l2_async_notifier_add_fwnode_remote_subdev(&mcam->notifier, ep,
+							   struct v4l2_async_subdev);
 	fwnode_handle_put(ep);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 1311b4996ece..a6bb7d9bf75f 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -2141,7 +2141,6 @@  static int isp_parse_of_endpoints(struct isp_device *isp)
 {
 	struct fwnode_handle *ep;
 	struct isp_async_subdev *isd = NULL;
-	struct v4l2_async_subdev *asd;
 	unsigned int i;
 
 	ep = fwnode_graph_get_endpoint_by_id(
@@ -2159,12 +2158,10 @@  static int isp_parse_of_endpoints(struct isp_device *isp)
 		ret = v4l2_fwnode_endpoint_parse(ep, &vep);
 
 		if (!ret) {
-			asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-				&isp->notifier, ep, sizeof(*isd));
-			if (!IS_ERR(asd)) {
-				isd = container_of(asd, struct isp_async_subdev, asd);
+			isd = v4l2_async_notifier_add_fwnode_remote_subdev(
+				&isp->notifier, ep, struct isp_async_subdev);
+			if (!IS_ERR(isd))
 				isp_parse_of_parallel_endpoint(isp->dev, &vep, &isd->bus);
-			}
 		}
 
 		fwnode_handle_put(ep);
@@ -2200,12 +2197,10 @@  static int isp_parse_of_endpoints(struct isp_device *isp)
 		}
 
 		if (!ret) {
-			asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-				&isp->notifier, ep, sizeof(*isd));
-
-			if (!IS_ERR(asd)) {
-				isd = container_of(asd, struct isp_async_subdev, asd);
+			isd = v4l2_async_notifier_add_fwnode_remote_subdev(
+				&isp->notifier, ep, struct isp_async_subdev);
 
+			if (!IS_ERR(isd)) {
 				switch (vep.bus_type) {
 				case V4L2_MBUS_CSI2_DPHY:
 					isd->bus.interface =
diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c
index 6d39a0aca99c..f69abfb90100 100644
--- a/drivers/media/platform/pxa_camera.c
+++ b/drivers/media/platform/pxa_camera.c
@@ -2246,7 +2246,7 @@  static int pxa_camera_pdata_from_dt(struct device *dev,
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
 				&pcdev->notifier,
 				of_fwnode_handle(np),
-				sizeof(*asd));
+				struct v4l2_async_subdev);
 	if (IS_ERR(asd))
 		err = PTR_ERR(asd);
 out:
@@ -2295,7 +2295,7 @@  static int pxa_camera_probe(struct platform_device *pdev)
 				&pcdev->notifier,
 				pcdev->pdata->sensor_i2c_adapter_id,
 				pcdev->pdata->sensor_i2c_address,
-				sizeof(*asd));
+				struct v4l2_async_subdev);
 		if (IS_ERR(asd))
 			err = PTR_ERR(asd);
 	} else if (pdev->dev.of_node) {
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 8fefce57bc49..7c0f669f8aa6 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -655,7 +655,6 @@  static int camss_of_parse_ports(struct camss *camss)
 
 	for_each_endpoint_of_node(dev->of_node, node) {
 		struct camss_async_subdev *csd;
-		struct v4l2_async_subdev *asd;
 
 		if (!of_device_is_available(node))
 			continue;
@@ -667,17 +666,15 @@  static int camss_of_parse_ports(struct camss *camss)
 			goto err_cleanup;
 		}
 
-		asd = v4l2_async_notifier_add_fwnode_subdev(
+		csd = v4l2_async_notifier_add_fwnode_subdev(
 			&camss->notifier, of_fwnode_handle(remote),
-			sizeof(*csd));
+			struct camss_async_subdev);
 		of_node_put(remote);
-		if (IS_ERR(asd)) {
-			ret = PTR_ERR(asd);
+		if (IS_ERR(csd)) {
+			ret = PTR_ERR(csd);
 			goto err_cleanup;
 		}
 
-		csd = container_of(asd, struct camss_async_subdev, asd);
-
 		ret = camss_of_parse_endpoint_node(dev, node, csd);
 		if (ret < 0)
 			goto err_cleanup;
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
index 98bff765b02e..a9cc09653110 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -642,7 +642,7 @@  static int rvin_parallel_parse_of(struct rvin_dev *vin)
 	}
 
 	asd = v4l2_async_notifier_add_fwnode_subdev(&vin->notifier, fwnode,
-						    sizeof(*asd));
+						    struct v4l2_async_subdev);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
 		goto out;
@@ -842,7 +842,8 @@  static int rvin_mc_parse_of(struct rvin_dev *vin, unsigned int id)
 	}
 
 	asd = v4l2_async_notifier_add_fwnode_subdev(&vin->group->notifier,
-						    fwnode, sizeof(*asd));
+						    fwnode,
+						    struct v4l2_async_subdev);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
 		goto out;
diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
index 945d2eb87233..e06cd512aba2 100644
--- a/drivers/media/platform/rcar-vin/rcar-csi2.c
+++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
@@ -910,7 +910,7 @@  static int rcsi2_parse_dt(struct rcar_csi2 *priv)
 	priv->notifier.ops = &rcar_csi2_notify_ops;
 
 	asd = v4l2_async_notifier_add_fwnode_subdev(&priv->notifier, fwnode,
-						    sizeof(*asd));
+						    struct v4l2_async_subdev);
 	fwnode_handle_put(fwnode);
 	if (IS_ERR(asd))
 		return PTR_ERR(asd);
diff --git a/drivers/media/platform/rcar_drif.c b/drivers/media/platform/rcar_drif.c
index f318cd4b8086..83bd9a412a56 100644
--- a/drivers/media/platform/rcar_drif.c
+++ b/drivers/media/platform/rcar_drif.c
@@ -1231,7 +1231,7 @@  static int rcar_drif_parse_subdevs(struct rcar_drif_sdr *sdr)
 	}
 
 	asd = v4l2_async_notifier_add_fwnode_subdev(notifier, fwnode,
-						    sizeof(*asd));
+						    struct v4l2_async_subdev);
 	fwnode_handle_put(fwnode);
 	if (IS_ERR(asd))
 		return PTR_ERR(asd);
diff --git a/drivers/media/platform/renesas-ceu.c b/drivers/media/platform/renesas-ceu.c
index 93e60aaa4959..c63d168b78f1 100644
--- a/drivers/media/platform/renesas-ceu.c
+++ b/drivers/media/platform/renesas-ceu.c
@@ -1495,7 +1495,6 @@  static int ceu_parse_platform_data(struct ceu_device *ceudev,
 				   const struct ceu_platform_data *pdata)
 {
 	const struct ceu_async_subdev *async_sd;
-	struct v4l2_async_subdev *asd;
 	struct ceu_subdev *ceu_sd;
 	unsigned int i;
 	int ret;
@@ -1511,16 +1510,15 @@  static int ceu_parse_platform_data(struct ceu_device *ceudev,
 
 		/* Setup the ceu subdevice and the async subdevice. */
 		async_sd = &pdata->subdevs[i];
-		asd = v4l2_async_notifier_add_i2c_subdev(&ceudev->notifier,
+		ceu_sd = v4l2_async_notifier_add_i2c_subdev(&ceudev->notifier,
 				async_sd->i2c_adapter_id,
 				async_sd->i2c_address,
-				sizeof(*ceu_sd));
-		if (IS_ERR(asd)) {
-			ret = PTR_ERR(asd);
+				struct ceu_subdev);
+		if (IS_ERR(ceu_sd)) {
+			ret = PTR_ERR(ceu_sd);
 			v4l2_async_notifier_cleanup(&ceudev->notifier);
 			return ret;
 		}
-		ceu_sd = to_ceu_subdev(asd);
 		ceu_sd->mbus_flags = async_sd->flags;
 		ceudev->subdevs[i] = ceu_sd;
 	}
@@ -1535,7 +1533,6 @@  static int ceu_parse_dt(struct ceu_device *ceudev)
 {
 	struct device_node *of = ceudev->dev->of_node;
 	struct device_node *ep;
-	struct v4l2_async_subdev *asd;
 	struct ceu_subdev *ceu_sd;
 	unsigned int i;
 	int num_ep;
@@ -1577,14 +1574,13 @@  static int ceu_parse_dt(struct ceu_device *ceudev)
 		}
 
 		/* Setup the ceu subdevice and the async subdevice. */
-		asd = v4l2_async_notifier_add_fwnode_remote_subdev(
+		ceu_sd = v4l2_async_notifier_add_fwnode_remote_subdev(
 				&ceudev->notifier, of_fwnode_handle(ep),
-				sizeof(*ceu_sd));
-		if (IS_ERR(asd)) {
-			ret = PTR_ERR(asd);
+				struct ceu_subdev);
+		if (IS_ERR(ceu_sd)) {
+			ret = PTR_ERR(ceu_sd);
 			goto error_cleanup;
 		}
-		ceu_sd = to_ceu_subdev(asd);
 		ceu_sd->mbus_flags = fw_ep.bus.parallel.flags;
 		ceudev->subdevs[i] = ceu_sd;
 
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index 235dcf0c4122..447721e78d1e 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -251,8 +251,7 @@  static int rkisp1_subdev_notifier(struct rkisp1_device *rkisp1)
 		struct v4l2_fwnode_endpoint vep = {
 			.bus_type = V4L2_MBUS_CSI2_DPHY
 		};
-		struct rkisp1_sensor_async *rk_asd = NULL;
-		struct v4l2_async_subdev *asd;
+		struct rkisp1_sensor_async *rk_asd;
 		struct fwnode_handle *ep;
 
 		ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(rkisp1->dev),
@@ -265,12 +264,11 @@  static int rkisp1_subdev_notifier(struct rkisp1_device *rkisp1)
 		if (ret)
 			goto err_parse;
 
-		asd = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
-							sizeof(*rk_asd));
-		if (IS_ERR(asd))
+		rk_asd = v4l2_async_notifier_add_fwnode_remote_subdev(ntf, ep,
+							struct rkisp1_sensor_async);
+		if (IS_ERR(rk_asd))
 			goto err_parse;
 
-		rk_asd = container_of(asd, struct rkisp1_sensor_async, asd);
 		rk_asd->mbus_type = vep.bus_type;
 		rk_asd->mbus_flags = vep.bus.mipi_csi2.flags;
 		rk_asd->lanes = vep.bus.mipi_csi2.num_data_lanes;
diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c
index 142f63d07dcd..bbcc2254fa2e 100644
--- a/drivers/media/platform/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/stm32/stm32-dcmi.c
@@ -1820,7 +1820,8 @@  static int dcmi_graph_init(struct stm32_dcmi *dcmi)
 	v4l2_async_notifier_init(&dcmi->notifier);
 
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-		&dcmi->notifier, of_fwnode_handle(ep), sizeof(*asd));
+		&dcmi->notifier, of_fwnode_handle(ep),
+		struct v4l2_async_subdev);
 
 	of_node_put(ep);
 
diff --git a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
index 3f94b8c966f3..8d40a7acba9c 100644
--- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
+++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
@@ -135,8 +135,8 @@  static int sun4i_csi_notifier_init(struct sun4i_csi *csi)
 
 	csi->bus = vep.bus.parallel;
 
-	asd = v4l2_async_notifier_add_fwnode_remote_subdev(&csi->notifier,
-							   ep, sizeof(*asd));
+	asd = v4l2_async_notifier_add_fwnode_remote_subdev(&csi->notifier, ep,
+							   struct v4l2_async_subdev);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
 		goto out;
diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index 2eef245c31a1..aa91367864d2 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -463,23 +463,21 @@  static int cal_async_notifier_register(struct cal_dev *cal)
 	for (i = 0; i < ARRAY_SIZE(cal->phy); ++i) {
 		struct cal_camerarx *phy = cal->phy[i];
 		struct cal_v4l2_async_subdev *casd;
-		struct v4l2_async_subdev *asd;
 		struct fwnode_handle *fwnode;
 
 		if (!phy || !phy->sensor_node)
 			continue;
 
 		fwnode = of_fwnode_handle(phy->sensor_node);
-		asd = v4l2_async_notifier_add_fwnode_subdev(&cal->notifier,
-							    fwnode,
-							    sizeof(*casd));
-		if (IS_ERR(asd)) {
+		casd = v4l2_async_notifier_add_fwnode_subdev(&cal->notifier,
+							     fwnode,
+							     struct cal_v4l2_async_subdev);
+		if (IS_ERR(casd)) {
 			phy_err(phy, "Failed to add subdev to notifier\n");
-			ret = PTR_ERR(asd);
+			ret = PTR_ERR(casd);
 			goto error;
 		}
 
-		casd = to_cal_asd(asd);
 		casd->phy = phy;
 	}
 
diff --git a/drivers/media/platform/video-mux.c b/drivers/media/platform/video-mux.c
index 7b280dfca727..133122e38515 100644
--- a/drivers/media/platform/video-mux.c
+++ b/drivers/media/platform/video-mux.c
@@ -371,7 +371,7 @@  static int video_mux_async_register(struct video_mux *vmux,
 			continue;
 
 		asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-			&vmux->notifier, ep, sizeof(*asd));
+			&vmux->notifier, ep, struct v4l2_async_subdev);
 
 		fwnode_handle_put(ep);
 
diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c
index cc2856efea59..bf4015d852e3 100644
--- a/drivers/media/platform/xilinx/xilinx-vipp.c
+++ b/drivers/media/platform/xilinx/xilinx-vipp.c
@@ -359,7 +359,7 @@  static int xvip_graph_parse_one(struct xvip_composite_device *xdev,
 	dev_dbg(xdev->dev, "parsing node %p\n", fwnode);
 
 	while (1) {
-		struct v4l2_async_subdev *asd;
+		struct xvip_graph_entity *xge;
 
 		ep = fwnode_graph_get_next_endpoint(fwnode, ep);
 		if (ep == NULL)
@@ -382,12 +382,12 @@  static int xvip_graph_parse_one(struct xvip_composite_device *xdev,
 			continue;
 		}
 
-		asd = v4l2_async_notifier_add_fwnode_subdev(
+		xge = v4l2_async_notifier_add_fwnode_subdev(
 			&xdev->notifier, remote,
-			sizeof(struct xvip_graph_entity));
+			struct xvip_graph_entity);
 		fwnode_handle_put(remote);
-		if (IS_ERR(asd)) {
-			ret = PTR_ERR(asd);
+		if (IS_ERR(xge)) {
+			ret = PTR_ERR(xge);
 			goto err_notifier_cleanup;
 		}
 	}
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index a05ff9abbacb..7d7a39006728 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -623,9 +623,9 @@  int __v4l2_async_notifier_add_subdev(struct v4l2_async_notifier *notifier,
 EXPORT_SYMBOL_GPL(__v4l2_async_notifier_add_subdev);
 
 struct v4l2_async_subdev *
-v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
-				      struct fwnode_handle *fwnode,
-				      unsigned int asd_struct_size)
+__v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
+					struct fwnode_handle *fwnode,
+					unsigned int asd_struct_size)
 {
 	struct v4l2_async_subdev *asd;
 	int ret;
@@ -646,12 +646,12 @@  v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
 
 	return asd;
 }
-EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_subdev);
+EXPORT_SYMBOL_GPL(__v4l2_async_notifier_add_fwnode_subdev);
 
 struct v4l2_async_subdev *
-v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
-					     struct fwnode_handle *endpoint,
-					     unsigned int asd_struct_size)
+__v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
+					       struct fwnode_handle *endpoint,
+					       unsigned int asd_struct_size)
 {
 	struct v4l2_async_subdev *asd;
 	struct fwnode_handle *remote;
@@ -660,21 +660,21 @@  v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
 	if (!remote)
 		return ERR_PTR(ENOTCONN);
 
-	asd = v4l2_async_notifier_add_fwnode_subdev(notif, remote,
-						    asd_struct_size);
+	asd = __v4l2_async_notifier_add_fwnode_subdev(notif, remote,
+						      asd_struct_size);
 	/*
-	 * Calling v4l2_async_notifier_add_fwnode_subdev grabs a refcount,
+	 * Calling __v4l2_async_notifier_add_fwnode_subdev grabs a refcount,
 	 * so drop then one we got in fwnode_graph_get_remote_port_parent.
 	 */
 	fwnode_handle_put(remote);
 	return asd;
 }
-EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_remote_subdev);
+EXPORT_SYMBOL_GPL(__v4l2_async_notifier_add_fwnode_remote_subdev);
 
 struct v4l2_async_subdev *
-v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
-				   int adapter_id, unsigned short address,
-				   unsigned int asd_struct_size)
+__v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
+				     int adapter_id, unsigned short address,
+				     unsigned int asd_struct_size)
 {
 	struct v4l2_async_subdev *asd;
 	int ret;
@@ -695,7 +695,7 @@  v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
 
 	return asd;
 }
-EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_i2c_subdev);
+EXPORT_SYMBOL_GPL(__v4l2_async_notifier_add_i2c_subdev);
 
 int v4l2_async_register_subdev(struct v4l2_subdev *sd)
 {
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
index 919fde20032e..74226f8f99e7 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -955,7 +955,7 @@  static int v4l2_fwnode_reference_parse(struct device *dev,
 
 		asd = v4l2_async_notifier_add_fwnode_subdev(notifier,
 							    args.fwnode,
-							    sizeof(*asd));
+							    struct v4l2_async_subdev);
 		fwnode_handle_put(args.fwnode);
 		if (IS_ERR(asd)) {
 			/* not an error if asd already exists */
@@ -1255,7 +1255,7 @@  v4l2_fwnode_reference_parse_int_props(struct device *dev,
 		struct v4l2_async_subdev *asd;
 
 		asd = v4l2_async_notifier_add_fwnode_subdev(notifier, fwnode,
-							    sizeof(*asd));
+							    struct v4l2_async_subdev);
 		fwnode_handle_put(fwnode);
 		if (IS_ERR(asd)) {
 			ret = PTR_ERR(asd);
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 6344389e6afa..ef5add079774 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -1923,7 +1923,7 @@  static int imx_csi_async_register(struct csi_priv *priv)
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
 	if (ep) {
 		asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-			&priv->notifier, ep, sizeof(*asd));
+			&priv->notifier, ep, struct v4l2_async_subdev);
 
 		fwnode_handle_put(ep);
 
diff --git a/drivers/staging/media/imx/imx-media-of.c b/drivers/staging/media/imx/imx-media-of.c
index 82e13e972e23..b677cf0e0c84 100644
--- a/drivers/staging/media/imx/imx-media-of.c
+++ b/drivers/staging/media/imx/imx-media-of.c
@@ -31,7 +31,7 @@  int imx_media_of_add_csi(struct imx_media_dev *imxmd,
 	/* add CSI fwnode to async notifier */
 	asd = v4l2_async_notifier_add_fwnode_subdev(&imxmd->notifier,
 						    of_fwnode_handle(csi_np),
-						    sizeof(*asd));
+						    struct v4l2_async_subdev);
 	if (IS_ERR(asd)) {
 		ret = PTR_ERR(asd);
 		if (ret == -EEXIST)
diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c
index a79ab38158e2..4f8fcc91aaae 100644
--- a/drivers/staging/media/imx/imx6-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx6-mipi-csi2.c
@@ -662,7 +662,7 @@  static int csi2_async_register(struct csi2_dev *csi2)
 	dev_dbg(csi2->dev, "flags: 0x%08x\n", vep.bus.mipi_csi2.flags);
 
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-		&csi2->notifier, ep, sizeof(*asd));
+		&csi2->notifier, ep, struct v4l2_async_subdev);
 	fwnode_handle_put(ep);
 
 	if (IS_ERR(asd))
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 4ea6e0bb274d..9150950b7339 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -1190,7 +1190,7 @@  static int imx7_csi_async_register(struct imx7_csi *csi)
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
 	if (ep) {
 		asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-			&csi->notifier, ep, sizeof(*asd));
+			&csi->notifier, ep, struct v4l2_async_subdev);
 
 		fwnode_handle_put(ep);
 
diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
index 32d8e7a824d4..0969ee528e38 100644
--- a/drivers/staging/media/imx/imx7-mipi-csis.c
+++ b/drivers/staging/media/imx/imx7-mipi-csis.c
@@ -1025,7 +1025,7 @@  static int mipi_csis_async_register(struct csi_state *state)
 	dev_dbg(state->dev, "flags: 0x%08x\n", state->bus.flags);
 
 	asd = v4l2_async_notifier_add_fwnode_remote_subdev(
-		&state->notifier, ep, sizeof(*asd));
+		&state->notifier, ep, struct v4l2_async_subdev);
 	if (IS_ERR(asd))
 		goto err_parse;
 
diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index 560d8b368124..07f1fa791b40 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -1530,7 +1530,7 @@  static int tegra_vi_graph_parse_one(struct tegra_vi_channel *chan,
 	struct tegra_vi *vi = chan->vi;
 	struct fwnode_handle *ep = NULL;
 	struct fwnode_handle *remote = NULL;
-	struct v4l2_async_subdev *asd;
+	struct tegra_vi_graph_entity *tvge;
 	struct device_node *node = NULL;
 	int ret;
 
@@ -1554,10 +1554,10 @@  static int tegra_vi_graph_parse_one(struct tegra_vi_channel *chan,
 			continue;
 		}
 
-		asd = v4l2_async_notifier_add_fwnode_subdev(&chan->notifier,
-				remote, sizeof(struct tegra_vi_graph_entity));
-		if (IS_ERR(asd)) {
-			ret = PTR_ERR(asd);
+		tvge = v4l2_async_notifier_add_fwnode_subdev(&chan->notifier,
+				remote, struct tegra_vi_graph_entity);
+		if (IS_ERR(tvge)) {
+			ret = PTR_ERR(tvge);
 			dev_err(vi->dev,
 				"failed to add subdev to notifier: %d\n", ret);
 			fwnode_handle_put(remote);
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index 162acf095d4d..9a0e3306f30d 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -172,9 +172,12 @@  int __v4l2_async_notifier_add_subdev(struct v4l2_async_notifier *notifier,
  * is released later at notifier cleanup time.
  */
 struct v4l2_async_subdev *
-v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
-				      struct fwnode_handle *fwnode,
-				      unsigned int asd_struct_size);
+__v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
+					struct fwnode_handle *fwnode,
+					unsigned int asd_struct_size);
+#define v4l2_async_notifier_add_fwnode_subdev(__notifier, __fwnode, __type)	\
+((__type *)__v4l2_async_notifier_add_fwnode_subdev(__notifier, __fwnode,	\
+						   sizeof(__type)))
 
 /**
  * v4l2_async_notifier_add_fwnode_remote_subdev - Allocate and add a fwnode
@@ -198,9 +201,12 @@  v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
  * exception that the fwnode refers to a local endpoint, not the remote one.
  */
 struct v4l2_async_subdev *
-v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
-					     struct fwnode_handle *endpoint,
-					     unsigned int asd_struct_size);
+__v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
+					       struct fwnode_handle *endpoint,
+					       unsigned int asd_struct_size);
+#define v4l2_async_notifier_add_fwnode_remote_subdev(__notifier, __ep, __type)	\
+((__type *)__v4l2_async_notifier_add_fwnode_remote_subdev(__notifier, __ep,	\
+							  sizeof(__type)))
 
 /**
  * v4l2_async_notifier_add_i2c_subdev - Allocate and add an i2c async
@@ -218,9 +224,12 @@  v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
  * Same as above but for I2C matched sub-devices.
  */
 struct v4l2_async_subdev *
-v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
-				   int adapter_id, unsigned short address,
-				   unsigned int asd_struct_size);
+__v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
+				     int adapter_id, unsigned short address,
+				     unsigned int asd_struct_size);
+#define v4l2_async_notifier_add_i2c_subdev(__notifier, __adap, __addr, __type)	\
+((__type *)__v4l2_async_notifier_add_i2c_subdev(__notifier, __adap, __addr,	\
+						sizeof(__type)))
 
 /**
  * v4l2_async_notifier_register - registers a subdevice asynchronous notifier