[RESEND PATCH v3 31/32] media: v4l: async: Set v4l2_device in async notifier init

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Set the v4l2_device already in async notifier init, so struct device
related to it will be available before the notifier is registered.

This is done in order to make struct device available earlier, during
construction of the async connections, for sensible debug prints.

This patch has been mostly generated using the following two commands:

git grep -l v4l2_async_nf_init -- drivers/media/ drivers/staging/media/ |
	while read i; do perl -e '
	@a=<>; unlink("'$i'"); open(F, "> '$i'");
	for $f ({i=>"v4l2_async_nf_init", r=>"v4l2_async_nf_register"},
		{i=>"v4l2_async_subdev_nf_init",
		 r=>"v4l2_async_subdev_nf_register"} ) {
	my $b; @a = map { $b = "$1, $2" if
	s/$f->{r}\(([^,]*),\s*([^\)]*)\)/v4l2_async_nf_register\($2\)/;
	$_; } @a; @a = map { if (defined $b) {
	s/v4l2_async_nf_init\([^\)]*\)/$f->{i}\($b\)/;
	s/$f->{r}\(\K[^,]*,\s*//; }; $_; } @a; }; print F @a; close F;'
	< $i; done

git grep -lP 'v4l2_async_(subdev_|)nf_init' | xargs perl -i -pe \
	's/v4l2_async_(subdev_|)nf_init\(\K([^,]*),\s*([^,]*)\)/$3, $2\)/'

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/i2c/max9286.c                   |  4 +-
 drivers/media/i2c/st-mipid02.c                |  4 +-
 drivers/media/i2c/tc358746.c                  |  4 +-
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c |  4 +-
 drivers/media/platform/atmel/atmel-isi.c      |  4 +-
 drivers/media/platform/cadence/cdns-csi2rx.c  |  4 +-
 drivers/media/platform/intel/pxa_camera.c     |  4 +-
 drivers/media/platform/marvell/cafe-driver.c  |  2 +-
 drivers/media/platform/marvell/mcam-core.c    |  2 +-
 drivers/media/platform/marvell/mmp-driver.c   |  2 +-
 .../platform/microchip/microchip-csi2dc.c     |  5 +--
 .../microchip/microchip-sama5d2-isc.c         |  5 +--
 .../microchip/microchip-sama7g5-isc.c         |  5 +--
 drivers/media/platform/nxp/imx-mipi-csis.c    |  4 +-
 drivers/media/platform/nxp/imx7-media-csi.c   |  4 +-
 .../platform/nxp/imx8-isi/imx8-isi-core.c     |  4 +-
 drivers/media/platform/qcom/camss/camss.c     |  5 +--
 drivers/media/platform/renesas/rcar-isp.c     |  4 +-
 .../platform/renesas/rcar-vin/rcar-core.c     |  8 ++--
 .../platform/renesas/rcar-vin/rcar-csi2.c     |  4 +-
 drivers/media/platform/renesas/rcar_drif.c    |  4 +-
 drivers/media/platform/renesas/renesas-ceu.c  |  4 +-
 .../platform/renesas/rzg2l-cru/rzg2l-core.c   |  4 +-
 .../platform/renesas/rzg2l-cru/rzg2l-csi2.c   |  4 +-
 .../platform/rockchip/rkisp1/rkisp1-dev.c     |  4 +-
 .../platform/samsung/exynos4-is/media-dev.c   |  5 +--
 drivers/media/platform/st/stm32/stm32-dcmi.c  |  4 +-
 .../platform/sunxi/sun4i-csi/sun4i_csi.c      |  4 +-
 .../sunxi/sun6i-csi/sun6i_csi_bridge.c        |  6 +--
 .../sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c   |  4 +-
 .../sun8i_a83t_mipi_csi2.c                    |  4 +-
 .../media/platform/ti/am437x/am437x-vpfe.c    |  4 +-
 drivers/media/platform/ti/cal/cal.c           |  4 +-
 .../media/platform/ti/davinci/vpif_capture.c  | 11 ++---
 drivers/media/platform/ti/omap3isp/isp.c      |  4 +-
 drivers/media/platform/video-mux.c            |  4 +-
 drivers/media/platform/xilinx/xilinx-vipp.c   |  4 +-
 drivers/media/v4l2-core/v4l2-async.c          | 44 +++++++------------
 drivers/media/v4l2-core/v4l2-fwnode.c         |  4 +-
 .../deprecated/atmel/atmel-sama5d2-isc.c      |  5 +--
 .../deprecated/atmel/atmel-sama7g5-isc.c      |  5 +--
 drivers/staging/media/imx/imx-media-csi.c     |  4 +-
 .../staging/media/imx/imx-media-dev-common.c  |  4 +-
 drivers/staging/media/imx/imx6-mipi-csi2.c    |  4 +-
 drivers/staging/media/imx/imx8mq-mipi-csi2.c  |  4 +-
 .../media/sunxi/sun6i-isp/sun6i_isp_proc.c    |  4 +-
 drivers/staging/media/tegra-video/vi.c        |  4 +-
 include/media/v4l2-async.h                    | 33 ++++++++------
 48 files changed, 132 insertions(+), 143 deletions(-)

diff --git a/drivers/media/i2c/max9286.c b/drivers/media/i2c/max9286.c
index 44def5e3ba5d1..5f13d75f591ad 100644
--- a/drivers/media/i2c/max9286.c
+++ b/drivers/media/i2c/max9286.c
@@ -746,7 +746,7 @@ static int max9286_v4l2_notifier_register(struct max9286_priv *priv)
 	if (!priv->nsources)
 		return 0;
 
-	v4l2_async_nf_init(&priv->notifier);
+	v4l2_async_subdev_nf_init(&priv->notifier, &priv->sd);
 
 	for_each_source(priv, source) {
 		unsigned int i = to_index(priv, source);
@@ -766,7 +766,7 @@ static int max9286_v4l2_notifier_register(struct max9286_priv *priv)
 
 	priv->notifier.ops = &max9286_notify_ops;
 
-	ret = v4l2_async_subdev_nf_register(&priv->sd, &priv->notifier);
+	ret = v4l2_async_nf_register(&priv->notifier);
 	if (ret) {
 		dev_err(dev, "Failed to register subdev_notifier");
 		v4l2_async_nf_cleanup(&priv->notifier);
diff --git a/drivers/media/i2c/st-mipid02.c b/drivers/media/i2c/st-mipid02.c
index daea4cb29ec83..d3810e137ba52 100644
--- a/drivers/media/i2c/st-mipid02.c
+++ b/drivers/media/i2c/st-mipid02.c
@@ -902,7 +902,7 @@ static int mipid02_parse_rx_ep(struct mipid02_dev *bridge)
 	bridge->rx = ep;
 
 	/* register async notifier so we get noticed when sensor is connected */
-	v4l2_async_nf_init(&bridge->notifier);
+	v4l2_async_subdev_nf_init(&bridge->notifier, &bridge->sd);
 	asd = v4l2_async_nf_add_fwnode_remote(&bridge->notifier,
 					      of_fwnode_handle(ep_node),
 					      struct v4l2_async_connection);
@@ -915,7 +915,7 @@ static int mipid02_parse_rx_ep(struct mipid02_dev *bridge)
 	}
 	bridge->notifier.ops = &mipid02_notifier_ops;
 
-	ret = v4l2_async_subdev_nf_register(&bridge->sd, &bridge->notifier);
+	ret = v4l2_async_nf_register(&bridge->notifier);
 	if (ret)
 		v4l2_async_nf_cleanup(&bridge->notifier);
 
diff --git a/drivers/media/i2c/tc358746.c b/drivers/media/i2c/tc358746.c
index a455848d60c15..6e4c484ae1bdc 100644
--- a/drivers/media/i2c/tc358746.c
+++ b/drivers/media/i2c/tc358746.c
@@ -1460,7 +1460,7 @@ static int tc358746_async_register(struct tc358746 *tc358746)
 		return err;
 	}
 
-	v4l2_async_nf_init(&tc358746->notifier);
+	v4l2_async_subdev_nf_init(&tc358746->notifier, &tc358746->sd);
 	asd = v4l2_async_nf_add_fwnode_remote(&tc358746->notifier, ep,
 					      struct v4l2_async_connection);
 	fwnode_handle_put(ep);
@@ -1472,7 +1472,7 @@ static int tc358746_async_register(struct tc358746 *tc358746)
 
 	tc358746->notifier.ops = &tc358746_notify_ops;
 
-	err = v4l2_async_subdev_nf_register(&tc358746->sd, &tc358746->notifier);
+	err = v4l2_async_nf_register(&tc358746->notifier);
 	if (err)
 		goto err_cleanup;
 
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
index 0f43b5e10f187..8de03d007d0b7 100644
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2-main.c
@@ -1502,7 +1502,7 @@ static int cio2_parse_firmware(struct cio2_device *cio2)
 	 * suspend.
 	 */
 	cio2->notifier.ops = &cio2_async_ops;
-	ret = v4l2_async_nf_register(&cio2->v4l2_dev, &cio2->notifier);
+	ret = v4l2_async_nf_register(&cio2->notifier);
 	if (ret)
 		dev_err(dev, "failed to register async notifier : %d\n", ret);
 
@@ -1797,7 +1797,7 @@ static int cio2_pci_probe(struct pci_dev *pci_dev,
 	if (r)
 		goto fail_v4l2_device_unregister;
 
-	v4l2_async_nf_init(&cio2->notifier);
+	v4l2_async_nf_init(&cio2->notifier, &cio2->v4l2_dev);
 
 	/* Register notifier for subdevices we care */
 	r = cio2_parse_firmware(cio2);
diff --git a/drivers/media/platform/atmel/atmel-isi.c b/drivers/media/platform/atmel/atmel-isi.c
index 7dbad99d4e45e..121eaa6994084 100644
--- a/drivers/media/platform/atmel/atmel-isi.c
+++ b/drivers/media/platform/atmel/atmel-isi.c
@@ -1159,7 +1159,7 @@ static int isi_graph_init(struct atmel_isi *isi)
 	if (!ep)
 		return -EINVAL;
 
-	v4l2_async_nf_init(&isi->notifier);
+	v4l2_async_nf_init(&isi->notifier, &isi->v4l2_dev);
 
 	asd = v4l2_async_nf_add_fwnode_remote(&isi->notifier,
 					      of_fwnode_handle(ep),
@@ -1171,7 +1171,7 @@ static int isi_graph_init(struct atmel_isi *isi)
 
 	isi->notifier.ops = &isi_graph_notify_ops;
 
-	ret = v4l2_async_nf_register(&isi->v4l2_dev, &isi->notifier);
+	ret = v4l2_async_nf_register(&isi->notifier);
 	if (ret < 0) {
 		dev_err(isi->dev, "Notifier registration failed\n");
 		v4l2_async_nf_cleanup(&isi->notifier);
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index b0731c07eace0..d7d6b63306521 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -399,7 +399,7 @@ static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx)
 		return -EINVAL;
 	}
 
-	v4l2_async_nf_init(&csi2rx->notifier);
+	v4l2_async_subdev_nf_init(&csi2rx->notifier, &csi2rx->subdev);
 
 	asd = v4l2_async_nf_add_fwnode_remote(&csi2rx->notifier, fwh,
 					      struct v4l2_async_connection);
@@ -409,7 +409,7 @@ static int csi2rx_parse_dt(struct csi2rx_priv *csi2rx)
 
 	csi2rx->notifier.ops = &csi2rx_notifier_ops;
 
-	ret = v4l2_async_subdev_nf_register(&csi2rx->subdev, &csi2rx->notifier);
+	ret = v4l2_async_nf_register(&csi2rx->notifier);
 	if (ret)
 		v4l2_async_nf_cleanup(&csi2rx->notifier);
 
diff --git a/drivers/media/platform/intel/pxa_camera.c b/drivers/media/platform/intel/pxa_camera.c
index 5df93fd4ff04b..44edd4bdc2c11 100644
--- a/drivers/media/platform/intel/pxa_camera.c
+++ b/drivers/media/platform/intel/pxa_camera.c
@@ -2311,7 +2311,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
 	if (err)
 		return err;
 
-	v4l2_async_nf_init(&pcdev->notifier);
+	v4l2_async_nf_init(&pcdev->notifier, &pcdev->v4l2_dev);
 	pcdev->res = res;
 	pcdev->pdata = pdev->dev.platform_data;
 	if (pcdev->pdata) {
@@ -2403,7 +2403,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
 		goto exit_deactivate;
 
 	pcdev->notifier.ops = &pxa_camera_sensor_ops;
-	err = v4l2_async_nf_register(&pcdev->v4l2_dev, &pcdev->notifier);
+	err = v4l2_async_nf_register(&pcdev->notifier);
 	if (err)
 		goto exit_deactivate;
 
diff --git a/drivers/media/platform/marvell/cafe-driver.c b/drivers/media/platform/marvell/cafe-driver.c
index fbfbb9f67ddfc..ef810249def61 100644
--- a/drivers/media/platform/marvell/cafe-driver.c
+++ b/drivers/media/platform/marvell/cafe-driver.c
@@ -540,7 +540,7 @@ static int cafe_pci_probe(struct pci_dev *pdev,
 	if (ret)
 		goto out_smbus_shutdown;
 
-	v4l2_async_nf_init(&mcam->notifier);
+	v4l2_async_nf_init(&mcam->notifier, &mcam->v4l2_dev);
 
 	asd = v4l2_async_nf_add_i2c(&mcam->notifier,
 				    i2c_adapter_id(cam->i2c_adapter),
diff --git a/drivers/media/platform/marvell/mcam-core.c b/drivers/media/platform/marvell/mcam-core.c
index bcfcecdb03ea2..dbcd4f15bda30 100644
--- a/drivers/media/platform/marvell/mcam-core.c
+++ b/drivers/media/platform/marvell/mcam-core.c
@@ -1873,7 +1873,7 @@ int mccic_register(struct mcam_camera *cam)
 	cam->mbus_code = mcam_def_mbus_code;
 
 	cam->notifier.ops = &mccic_notify_ops;
-	ret = v4l2_async_nf_register(&cam->v4l2_dev, &cam->notifier);
+	ret = v4l2_async_nf_register(&cam->notifier);
 	if (ret < 0) {
 		cam_warn(cam, "failed to register a sensor notifier");
 		goto out;
diff --git a/drivers/media/platform/marvell/mmp-driver.c b/drivers/media/platform/marvell/mmp-driver.c
index dbc1368b91210..76e0ac9cd34f3 100644
--- a/drivers/media/platform/marvell/mmp-driver.c
+++ b/drivers/media/platform/marvell/mmp-driver.c
@@ -239,7 +239,7 @@ static int mmpcam_probe(struct platform_device *pdev)
 	if (!ep)
 		return -ENODEV;
 
-	v4l2_async_nf_init(&mcam->notifier);
+	v4l2_async_nf_init(&mcam->notifier, &mcam->v4l2_dev);
 
 	asd = v4l2_async_nf_add_fwnode_remote(&mcam->notifier, ep,
 					      struct v4l2_async_connection);
diff --git a/drivers/media/platform/microchip/microchip-csi2dc.c b/drivers/media/platform/microchip/microchip-csi2dc.c
index d631c3880c536..988c1cc1d8b6b 100644
--- a/drivers/media/platform/microchip/microchip-csi2dc.c
+++ b/drivers/media/platform/microchip/microchip-csi2dc.c
@@ -523,7 +523,7 @@ static int csi2dc_prepare_notifier(struct csi2dc_device *csi2dc,
 	struct v4l2_async_connection *asd;
 	int ret = 0;
 
-	v4l2_async_nf_init(&csi2dc->notifier);
+	v4l2_async_subdev_nf_init(&csi2dc->notifier, &csi2dc->csi2dc_sd);
 
 	asd = v4l2_async_nf_add_fwnode_remote(&csi2dc->notifier,
 					      input_fwnode,
@@ -542,8 +542,7 @@ static int csi2dc_prepare_notifier(struct csi2dc_device *csi2dc,
 
 	csi2dc->notifier.ops = &csi2dc_async_ops;
 
-	ret = v4l2_async_subdev_nf_register(&csi2dc->csi2dc_sd,
-					    &csi2dc->notifier);
+	ret = v4l2_async_nf_register(&csi2dc->notifier);
 	if (ret) {
 		dev_err(csi2dc->dev, "fail to register async notifier: %d\n",
 			ret);
diff --git a/drivers/media/platform/microchip/microchip-sama5d2-isc.c b/drivers/media/platform/microchip/microchip-sama5d2-isc.c
index 10e6cebf629e6..d78d289bd4250 100644
--- a/drivers/media/platform/microchip/microchip-sama5d2-isc.c
+++ b/drivers/media/platform/microchip/microchip-sama5d2-isc.c
@@ -529,7 +529,7 @@ static int microchip_isc_probe(struct platform_device *pdev)
 		struct fwnode_handle *fwnode =
 			of_fwnode_handle(subdev_entity->epn);
 
-		v4l2_async_nf_init(&subdev_entity->notifier);
+		v4l2_async_nf_init(&subdev_entity->notifier, &isc->v4l2_dev);
 
 		asd = v4l2_async_nf_add_fwnode_remote(&subdev_entity->notifier,
 						      fwnode,
@@ -545,8 +545,7 @@ static int microchip_isc_probe(struct platform_device *pdev)
 
 		subdev_entity->notifier.ops = &microchip_isc_async_ops;
 
-		ret = v4l2_async_nf_register(&isc->v4l2_dev,
-					     &subdev_entity->notifier);
+		ret = v4l2_async_nf_register(&subdev_entity->notifier);
 		if (ret) {
 			dev_err(dev, "fail to register async notifier\n");
 			goto cleanup_subdev;
diff --git a/drivers/media/platform/microchip/microchip-sama7g5-isc.c b/drivers/media/platform/microchip/microchip-sama7g5-isc.c
index 324810dbdc3af..6d556bb42c12a 100644
--- a/drivers/media/platform/microchip/microchip-sama7g5-isc.c
+++ b/drivers/media/platform/microchip/microchip-sama7g5-isc.c
@@ -519,7 +519,7 @@ static int microchip_xisc_probe(struct platform_device *pdev)
 		struct fwnode_handle *fwnode =
 			of_fwnode_handle(subdev_entity->epn);
 
-		v4l2_async_nf_init(&subdev_entity->notifier);
+		v4l2_async_nf_init(&subdev_entity->notifier, &isc->v4l2_dev);
 
 		asd = v4l2_async_nf_add_fwnode_remote(&subdev_entity->notifier,
 						      fwnode,
@@ -535,8 +535,7 @@ static int microchip_xisc_probe(struct platform_device *pdev)
 
 		subdev_entity->notifier.ops = &microchip_isc_async_ops;
 
-		ret = v4l2_async_nf_register(&isc->v4l2_dev,
-					     &subdev_entity->notifier);
+		ret = v4l2_async_nf_register(&subdev_entity->notifier);
 		if (ret) {
 			dev_err(dev, "fail to register async notifier\n");
 			goto cleanup_subdev;
diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c
index 390834ce482bd..c0439bd86b21b 100644
--- a/drivers/media/platform/nxp/imx-mipi-csis.c
+++ b/drivers/media/platform/nxp/imx-mipi-csis.c
@@ -1252,7 +1252,7 @@ static int mipi_csis_async_register(struct mipi_csis_device *csis)
 	unsigned int i;
 	int ret;
 
-	v4l2_async_nf_init(&csis->notifier);
+	v4l2_async_subdev_nf_init(&csis->notifier, &csis->sd);
 
 	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(csis->dev), 0, 0,
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
@@ -1288,7 +1288,7 @@ static int mipi_csis_async_register(struct mipi_csis_device *csis)
 
 	csis->notifier.ops = &mipi_csis_notify_ops;
 
-	ret = v4l2_async_subdev_nf_register(&csis->sd, &csis->notifier);
+	ret = v4l2_async_nf_register(&csis->notifier);
 	if (ret)
 		return ret;
 
diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
index 75b7ad65a1141..a9933a97dbef9 100644
--- a/drivers/media/platform/nxp/imx7-media-csi.c
+++ b/drivers/media/platform/nxp/imx7-media-csi.c
@@ -2107,7 +2107,7 @@ static int imx7_csi_async_register(struct imx7_csi *csi)
 	struct fwnode_handle *ep;
 	int ret;
 
-	v4l2_async_nf_init(&csi->notifier);
+	v4l2_async_nf_init(&csi->notifier, &csi->v4l2_dev);
 
 	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(csi->dev), 0, 0,
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
@@ -2130,7 +2130,7 @@ static int imx7_csi_async_register(struct imx7_csi *csi)
 
 	csi->notifier.ops = &imx7_csi_notify_ops;
 
-	ret = v4l2_async_nf_register(&csi->v4l2_dev, &csi->notifier);
+	ret = v4l2_async_nf_register(&csi->notifier);
 	if (ret)
 		goto error;
 
diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
index a09f416a64c4f..8d332ac328888 100644
--- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
+++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
@@ -175,7 +175,7 @@ static int mxc_isi_v4l2_init(struct mxc_isi_dev *isi)
 	}
 
 	/* Initialize, fill and register the async notifier. */
-	v4l2_async_nf_init(&isi->notifier);
+	v4l2_async_nf_init(&isi->notifier, v4l2_dev);
 	isi->notifier.ops = &mxc_isi_async_notifier_ops;
 
 	for (i = 0; i < isi->pdata->num_ports; ++i) {
@@ -200,7 +200,7 @@ static int mxc_isi_v4l2_init(struct mxc_isi_dev *isi)
 		masd->port = i;
 	}
 
-	ret = v4l2_async_nf_register(v4l2_dev, &isi->notifier);
+	ret = v4l2_async_nf_register(&isi->notifier);
 	if (ret < 0) {
 		dev_err(isi->dev,
 			"Failed to register async notifier: %d\n", ret);
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index b89e2bb5b505e..f11dc59135a5a 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -1640,7 +1640,7 @@ static int camss_probe(struct platform_device *pdev)
 		goto err_cleanup;
 	}
 
-	v4l2_async_nf_init(&camss->notifier);
+	v4l2_async_nf_init(&camss->notifier, &camss->v4l2_dev);
 
 	num_subdevs = camss_of_parse_ports(camss);
 	if (num_subdevs < 0) {
@@ -1655,8 +1655,7 @@ static int camss_probe(struct platform_device *pdev)
 	if (num_subdevs) {
 		camss->notifier.ops = &camss_subdev_notifier_ops;
 
-		ret = v4l2_async_nf_register(&camss->v4l2_dev,
-					     &camss->notifier);
+		ret = v4l2_async_nf_register(&camss->notifier);
 		if (ret) {
 			dev_err(dev,
 				"Failed to register async subdev nodes: %d\n",
diff --git a/drivers/media/platform/renesas/rcar-isp.c b/drivers/media/platform/renesas/rcar-isp.c
index 5d6d9ffb5201d..452d3b8da7e1c 100644
--- a/drivers/media/platform/renesas/rcar-isp.c
+++ b/drivers/media/platform/renesas/rcar-isp.c
@@ -392,7 +392,7 @@ static int risp_parse_dt(struct rcar_isp *isp)
 
 	dev_dbg(isp->dev, "Found '%pOF'\n", to_of_node(fwnode));
 
-	v4l2_async_nf_init(&isp->notifier);
+	v4l2_async_subdev_nf_init(&isp->notifier, &isp->subdev);
 	isp->notifier.ops = &risp_notify_ops;
 
 	asd = v4l2_async_nf_add_fwnode(&isp->notifier, fwnode,
@@ -401,7 +401,7 @@ static int risp_parse_dt(struct rcar_isp *isp)
 	if (IS_ERR(asd))
 		return PTR_ERR(asd);
 
-	ret = v4l2_async_subdev_nf_register(&isp->subdev, &isp->notifier);
+	ret = v4l2_async_nf_register(&isp->notifier);
 	if (ret)
 		v4l2_async_nf_cleanup(&isp->notifier);
 
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-core.c b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
index 498778eb9892b..65be0f4c88457 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
@@ -376,7 +376,7 @@ static int rvin_group_notifier_init(struct rvin_dev *vin, unsigned int port,
 
 	mutex_unlock(&vin->group->lock);
 
-	v4l2_async_nf_init(&vin->group->notifier);
+	v4l2_async_nf_init(&vin->group->notifier, &vin->v4l2_dev);
 
 	/*
 	 * Some subdevices may overlap but the parser function can handle it and
@@ -400,7 +400,7 @@ static int rvin_group_notifier_init(struct rvin_dev *vin, unsigned int port,
 		return 0;
 
 	vin->group->notifier.ops = &rvin_group_notify_ops;
-	ret = v4l2_async_nf_register(&vin->v4l2_dev, &vin->group->notifier);
+	ret = v4l2_async_nf_register(&vin->group->notifier);
 	if (ret < 0) {
 		vin_err(vin, "Notifier registration failed\n");
 		v4l2_async_nf_cleanup(&vin->group->notifier);
@@ -713,7 +713,7 @@ static int rvin_parallel_init(struct rvin_dev *vin)
 {
 	int ret;
 
-	v4l2_async_nf_init(&vin->notifier);
+	v4l2_async_nf_init(&vin->notifier, &vin->v4l2_dev);
 
 	ret = rvin_parallel_parse_of(vin);
 	if (ret)
@@ -726,7 +726,7 @@ static int rvin_parallel_init(struct rvin_dev *vin)
 		to_of_node(vin->parallel.asc->match.fwnode));
 
 	vin->notifier.ops = &rvin_parallel_notify_ops;
-	ret = v4l2_async_nf_register(&vin->v4l2_dev, &vin->notifier);
+	ret = v4l2_async_nf_register(&vin->notifier);
 	if (ret < 0) {
 		vin_err(vin, "Notifier registration failed\n");
 		v4l2_async_nf_cleanup(&vin->notifier);
diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-csi2.c b/drivers/media/platform/renesas/rcar-vin/rcar-csi2.c
index de7b479df3a9d..21f8f4be0dfe5 100644
--- a/drivers/media/platform/renesas/rcar-vin/rcar-csi2.c
+++ b/drivers/media/platform/renesas/rcar-vin/rcar-csi2.c
@@ -1076,7 +1076,7 @@ static int rcsi2_parse_dt(struct rcar_csi2 *priv)
 
 	dev_dbg(priv->dev, "Found '%pOF'\n", to_of_node(fwnode));
 
-	v4l2_async_nf_init(&priv->notifier);
+	v4l2_async_subdev_nf_init(&priv->notifier, &priv->subdev);
 	priv->notifier.ops = &rcar_csi2_notify_ops;
 
 	asc = v4l2_async_nf_add_fwnode(&priv->notifier, fwnode,
@@ -1085,7 +1085,7 @@ static int rcsi2_parse_dt(struct rcar_csi2 *priv)
 	if (IS_ERR(asc))
 		return PTR_ERR(asc);
 
-	ret = v4l2_async_subdev_nf_register(&priv->subdev, &priv->notifier);
+	ret = v4l2_async_nf_register(&priv->notifier);
 	if (ret)
 		v4l2_async_nf_cleanup(&priv->notifier);
 
diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
index 90fda730030d7..c7a925f421228 100644
--- a/drivers/media/platform/renesas/rcar_drif.c
+++ b/drivers/media/platform/renesas/rcar_drif.c
@@ -1207,7 +1207,7 @@ static int rcar_drif_parse_subdevs(struct rcar_drif_sdr *sdr)
 	struct fwnode_handle *fwnode, *ep;
 	struct v4l2_async_connection *asd;
 
-	v4l2_async_nf_init(notifier);
+	v4l2_async_nf_init(&sdr->notifier, &sdr->v4l2_dev);
 
 	ep = fwnode_graph_get_next_endpoint(of_fwnode_handle(sdr->dev->of_node),
 					    NULL);
@@ -1341,7 +1341,7 @@ static int rcar_drif_sdr_probe(struct rcar_drif_sdr *sdr)
 	sdr->notifier.ops = &rcar_drif_notify_ops;
 
 	/* Register notifier */
-	ret = v4l2_async_nf_register(&sdr->v4l2_dev, &sdr->notifier);
+	ret = v4l2_async_nf_register(&sdr->notifier);
 	if (ret < 0) {
 		dev_err(sdr->dev, "failed: notifier register ret %d\n", ret);
 		goto cleanup;
diff --git a/drivers/media/platform/renesas/renesas-ceu.c b/drivers/media/platform/renesas/renesas-ceu.c
index be6140c93fc0c..c2215205fb3c3 100644
--- a/drivers/media/platform/renesas/renesas-ceu.c
+++ b/drivers/media/platform/renesas/renesas-ceu.c
@@ -1667,7 +1667,7 @@ static int ceu_probe(struct platform_device *pdev)
 	if (ret)
 		goto error_pm_disable;
 
-	v4l2_async_nf_init(&ceudev->notifier);
+	v4l2_async_nf_init(&ceudev->notifier, &ceudev->v4l2_dev);
 
 	if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
 		ceu_data = of_device_get_match_data(dev);
@@ -1689,7 +1689,7 @@ static int ceu_probe(struct platform_device *pdev)
 
 	ceudev->notifier.v4l2_dev	= &ceudev->v4l2_dev;
 	ceudev->notifier.ops		= &ceu_notify_ops;
-	ret = v4l2_async_nf_register(&ceudev->v4l2_dev, &ceudev->notifier);
+	ret = v4l2_async_nf_register(&ceudev->notifier);
 	if (ret)
 		goto error_cleanup;
 
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
index e026ed5337513..fdef43fd1895b 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
@@ -183,7 +183,7 @@ static int rzg2l_cru_mc_parse_of_graph(struct rzg2l_cru_dev *cru)
 {
 	int ret;
 
-	v4l2_async_nf_init(&cru->notifier);
+	v4l2_async_nf_init(&cru->notifier, &cru->v4l2_dev);
 
 	ret = rzg2l_cru_mc_parse_of(cru);
 	if (ret)
@@ -194,7 +194,7 @@ static int rzg2l_cru_mc_parse_of_graph(struct rzg2l_cru_dev *cru)
 	if (list_empty(&cru->notifier.waiting_list))
 		return 0;
 
-	ret = v4l2_async_nf_register(&cru->v4l2_dev, &cru->notifier);
+	ret = v4l2_async_nf_register(&cru->notifier);
 	if (ret < 0) {
 		dev_err(cru->dev, "Notifier registration failed\n");
 		v4l2_async_nf_cleanup(&cru->notifier);
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c
index f6bf4cdff28c2..7f6a37f835415 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c
@@ -674,7 +674,7 @@ static int rzg2l_csi2_parse_dt(struct rzg2l_csi2 *csi2)
 	fwnode = fwnode_graph_get_remote_endpoint(ep);
 	fwnode_handle_put(ep);
 
-	v4l2_async_nf_init(&csi2->notifier);
+	v4l2_async_subdev_nf_init(&csi2->notifier, &csi2->subdev);
 	csi2->notifier.ops = &rzg2l_csi2_notify_ops;
 
 	asd = v4l2_async_nf_add_fwnode(&csi2->notifier, fwnode,
@@ -683,7 +683,7 @@ static int rzg2l_csi2_parse_dt(struct rzg2l_csi2 *csi2)
 	if (IS_ERR(asd))
 		return PTR_ERR(asd);
 
-	ret = v4l2_async_subdev_nf_register(&csi2->subdev, &csi2->notifier);
+	ret = v4l2_async_nf_register(&csi2->notifier);
 	if (ret)
 		v4l2_async_nf_cleanup(&csi2->notifier);
 
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index eb88494c2a427..543fd377ab2a4 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -187,7 +187,7 @@ static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1)
 	unsigned int index = 0;
 	int ret = 0;
 
-	v4l2_async_nf_init(ntf);
+	v4l2_async_nf_init(ntf, &rkisp1->v4l2_dev);
 
 	ntf->ops = &rkisp1_subdev_notifier_ops;
 
@@ -287,7 +287,7 @@ static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1)
 	if (!index)
 		dev_dbg(rkisp1->dev, "no remote subdevice found\n");
 
-	ret = v4l2_async_nf_register(&rkisp1->v4l2_dev, ntf);
+	ret = v4l2_async_nf_register(ntf);
 	if (ret) {
 		v4l2_async_nf_cleanup(ntf);
 		return ret;
diff --git a/drivers/media/platform/samsung/exynos4-is/media-dev.c b/drivers/media/platform/samsung/exynos4-is/media-dev.c
index 59070616cb1bd..623e52440ccd2 100644
--- a/drivers/media/platform/samsung/exynos4-is/media-dev.c
+++ b/drivers/media/platform/samsung/exynos4-is/media-dev.c
@@ -1479,7 +1479,7 @@ static int fimc_md_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, fmd);
 
-	v4l2_async_nf_init(&fmd->subdev_notifier);
+	v4l2_async_nf_init(&fmd->subdev_notifier, &fmd->v4l2_dev);
 
 	ret = fimc_md_register_platform_entities(fmd, dev->of_node);
 	if (ret)
@@ -1507,8 +1507,7 @@ static int fimc_md_probe(struct platform_device *pdev)
 		fmd->subdev_notifier.ops = &subdev_notifier_ops;
 		fmd->num_sensors = 0;
 
-		ret = v4l2_async_nf_register(&fmd->v4l2_dev,
-					     &fmd->subdev_notifier);
+		ret = v4l2_async_nf_register(&fmd->subdev_notifier);
 		if (ret)
 			goto err_clk_p;
 	}
diff --git a/drivers/media/platform/st/stm32/stm32-dcmi.c b/drivers/media/platform/st/stm32/stm32-dcmi.c
index 6d1197d4464e2..0e8f21602a066 100644
--- a/drivers/media/platform/st/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/st/stm32/stm32-dcmi.c
@@ -1897,7 +1897,7 @@ static int dcmi_graph_init(struct stm32_dcmi *dcmi)
 		return -EINVAL;
 	}
 
-	v4l2_async_nf_init(&dcmi->notifier);
+	v4l2_async_nf_init(&dcmi->notifier, &dcmi->v4l2_dev);
 
 	asd = v4l2_async_nf_add_fwnode_remote(&dcmi->notifier,
 					      of_fwnode_handle(ep),
@@ -1912,7 +1912,7 @@ static int dcmi_graph_init(struct stm32_dcmi *dcmi)
 
 	dcmi->notifier.ops = &dcmi_graph_notify_ops;
 
-	ret = v4l2_async_nf_register(&dcmi->v4l2_dev, &dcmi->notifier);
+	ret = v4l2_async_nf_register(&dcmi->notifier);
 	if (ret < 0) {
 		dev_err(dcmi->dev, "Failed to register notifier\n");
 		v4l2_async_nf_cleanup(&dcmi->notifier);
diff --git a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
index 38ca534842100..bb903e5ea35ea 100644
--- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
+++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c
@@ -122,7 +122,7 @@ static int sun4i_csi_notifier_init(struct sun4i_csi *csi)
 	struct fwnode_handle *ep;
 	int ret;
 
-	v4l2_async_nf_init(&csi->notifier);
+	v4l2_async_nf_init(&csi->notifier, &csi->v4l);
 
 	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(csi->dev), 0, 0,
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
@@ -240,7 +240,7 @@ static int sun4i_csi_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_unregister_media;
 
-	ret = v4l2_async_nf_register(&csi->v4l, &csi->notifier);
+	ret = v4l2_async_nf_register(&csi->notifier);
 	if (ret) {
 		dev_err(csi->dev, "Couldn't register our notifier.\n");
 		goto err_unregister_media;
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
index ebb725fc11ba5..0dcf605f2764b 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
@@ -819,7 +819,7 @@ int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev)
 
 	/* V4L2 Async */
 
-	v4l2_async_nf_init(notifier);
+	v4l2_async_subdev_nf_init(notifier, subdev);
 	notifier->ops = &sun6i_csi_bridge_notifier_ops;
 
 	sun6i_csi_bridge_source_setup(csi_dev, &bridge->source_parallel,
@@ -829,9 +829,9 @@ int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev)
 				      SUN6I_CSI_PORT_MIPI_CSI2, NULL);
 
 	if (csi_dev->isp_available)
-		ret = v4l2_async_subdev_nf_register(subdev, notifier);
+		ret = v4l2_async_nf_register(notifier);
 	else
-		ret = v4l2_async_nf_register(v4l2_dev, notifier);
+		ret = v4l2_async_nf_register(notifier);
 	if (ret) {
 		dev_err(dev, "failed to register v4l2 async notifier: %d\n",
 			ret);
diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c
index a78900dd0b7a6..adf966d2f5ca2 100644
--- a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c
+++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c
@@ -531,7 +531,7 @@ static int sun6i_mipi_csi2_bridge_setup(struct sun6i_mipi_csi2_device *csi2_dev)
 
 	/* V4L2 Async */
 
-	v4l2_async_nf_init(notifier);
+	v4l2_async_subdev_nf_init(notifier, subdev);
 	notifier->ops = &sun6i_mipi_csi2_notifier_ops;
 
 	ret = sun6i_mipi_csi2_bridge_source_setup(csi2_dev);
@@ -540,7 +540,7 @@ static int sun6i_mipi_csi2_bridge_setup(struct sun6i_mipi_csi2_device *csi2_dev)
 
 	/* Only register the notifier when a sensor is connected. */
 	if (ret != -ENODEV) {
-		ret = v4l2_async_subdev_nf_register(subdev, notifier);
+		ret = v4l2_async_nf_register(notifier);
 		if (ret < 0)
 			goto error_v4l2_notifier_cleanup;
 
diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c
index 909aaef200989..50641d7af320d 100644
--- a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c
+++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c
@@ -569,7 +569,7 @@ sun8i_a83t_mipi_csi2_bridge_setup(struct sun8i_a83t_mipi_csi2_device *csi2_dev)
 
 	/* V4L2 Async */
 
-	v4l2_async_nf_init(notifier);
+	v4l2_async_subdev_nf_init(notifier, subdev);
 	notifier->ops = &sun8i_a83t_mipi_csi2_notifier_ops;
 
 	ret = sun8i_a83t_mipi_csi2_bridge_source_setup(csi2_dev);
@@ -578,7 +578,7 @@ sun8i_a83t_mipi_csi2_bridge_setup(struct sun8i_a83t_mipi_csi2_device *csi2_dev)
 
 	/* Only register the notifier when a sensor is connected. */
 	if (ret != -ENODEV) {
-		ret = v4l2_async_subdev_nf_register(subdev, notifier);
+		ret = v4l2_async_nf_register(notifier);
 		if (ret < 0)
 			goto error_v4l2_notifier_cleanup;
 
diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
index 1457a188fea12..9ecd6b02467c8 100644
--- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
@@ -2300,7 +2300,7 @@ vpfe_get_pdata(struct vpfe_device *vpfe)
 
 	dev_dbg(dev, "vpfe_get_pdata\n");
 
-	v4l2_async_nf_init(&vpfe->notifier);
+	v4l2_async_nf_init(&vpfe->notifier, &vpfe->v4l2_dev);
 
 	if (!IS_ENABLED(CONFIG_OF) || !dev->of_node)
 		return dev->platform_data;
@@ -2466,7 +2466,7 @@ static int vpfe_probe(struct platform_device *pdev)
 	}
 
 	vpfe->notifier.ops = &vpfe_async_ops;
-	ret = v4l2_async_nf_register(&vpfe->v4l2_dev, &vpfe->notifier);
+	ret = v4l2_async_nf_register(&vpfe->notifier);
 	if (ret) {
 		vpfe_err(vpfe, "Error registering async notifier\n");
 		ret = -EINVAL;
diff --git a/drivers/media/platform/ti/cal/cal.c b/drivers/media/platform/ti/cal/cal.c
index bf7a985168c7b..25780e1f103e7 100644
--- a/drivers/media/platform/ti/cal/cal.c
+++ b/drivers/media/platform/ti/cal/cal.c
@@ -895,7 +895,7 @@ static int cal_async_notifier_register(struct cal_dev *cal)
 	unsigned int i;
 	int ret;
 
-	v4l2_async_nf_init(&cal->notifier);
+	v4l2_async_nf_init(&cal->notifier, &cal->v4l2_dev);
 	cal->notifier.ops = &cal_async_notifier_ops;
 
 	for (i = 0; i < cal->data->num_csi2_phy; ++i) {
@@ -919,7 +919,7 @@ static int cal_async_notifier_register(struct cal_dev *cal)
 		casd->phy = phy;
 	}
 
-	ret = v4l2_async_nf_register(&cal->v4l2_dev, &cal->notifier);
+	ret = v4l2_async_nf_register(&cal->notifier);
 	if (ret) {
 		cal_err(cal, "Error registering async notifier\n");
 		goto error;
diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
index 9b97e26be0892..3f0b161ab50cf 100644
--- a/drivers/media/platform/ti/davinci/vpif_capture.c
+++ b/drivers/media/platform/ti/davinci/vpif_capture.c
@@ -1483,7 +1483,8 @@ static const struct v4l2_async_notifier_operations vpif_async_ops = {
 };
 
 static struct vpif_capture_config *
-vpif_capture_get_pdata(struct platform_device *pdev)
+vpif_capture_get_pdata(struct platform_device *pdev,
+		       struct v4l2_device *v4l2_dev)
 {
 	struct device_node *endpoint = NULL;
 	struct device_node *rem = NULL;
@@ -1492,7 +1493,7 @@ vpif_capture_get_pdata(struct platform_device *pdev)
 	struct vpif_capture_chan_config *chan;
 	unsigned int i;
 
-	v4l2_async_nf_init(&vpif_obj.notifier);
+	v4l2_async_nf_init(&vpif_obj.notifier, v4l2_dev);
 
 	/*
 	 * DT boot: OF node from parent device contains
@@ -1649,7 +1650,8 @@ static __init int vpif_probe(struct platform_device *pdev)
 		goto vpif_unregister;
 	}
 
-	pdev->dev.platform_data = vpif_capture_get_pdata(pdev);
+	pdev->dev.platform_data =
+		vpif_capture_get_pdata(pdev, &vpif_obj.v4l2_dev);
 	if (!pdev->dev.platform_data) {
 		dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
 		goto probe_subdev_out;
@@ -1683,8 +1685,7 @@ static __init int vpif_probe(struct platform_device *pdev)
 			goto probe_subdev_out;
 	} else {
 		vpif_obj.notifier.ops = &vpif_async_ops;
-		err = v4l2_async_nf_register(&vpif_obj.v4l2_dev,
-					     &vpif_obj.notifier);
+		err = v4l2_async_nf_register(&vpif_obj.notifier);
 		if (err) {
 			vpif_err("Error registering async notifier\n");
 			err = -EINVAL;
diff --git a/drivers/media/platform/ti/omap3isp/isp.c b/drivers/media/platform/ti/omap3isp/isp.c
index 5b3266b214874..44ddc1422cc75 100644
--- a/drivers/media/platform/ti/omap3isp/isp.c
+++ b/drivers/media/platform/ti/omap3isp/isp.c
@@ -2425,13 +2425,13 @@ static int isp_probe(struct platform_device *pdev)
 
 	isp->notifier.ops = &isp_subdev_notifier_ops;
 
-	v4l2_async_nf_init(&isp->notifier);
+	v4l2_async_nf_init(&isp->notifier, &isp->v4l2_dev);
 
 	ret = isp_parse_of_endpoints(isp);
 	if (ret < 0)
 		goto error_register_entities;
 
-	ret = v4l2_async_nf_register(&isp->v4l2_dev, &isp->notifier);
+	ret = v4l2_async_nf_register(&isp->notifier);
 	if (ret)
 		goto error_register_entities;
 
diff --git a/drivers/media/platform/video-mux.c b/drivers/media/platform/video-mux.c
index e1dd798764312..315c65effe878 100644
--- a/drivers/media/platform/video-mux.c
+++ b/drivers/media/platform/video-mux.c
@@ -360,7 +360,7 @@ static int video_mux_async_register(struct video_mux *vmux,
 	unsigned int i;
 	int ret;
 
-	v4l2_async_nf_init(&vmux->notifier);
+	v4l2_async_subdev_nf_init(&vmux->notifier, &vmux->subdev);
 
 	for (i = 0; i < num_input_pads; i++) {
 		struct v4l2_async_connection *asd;
@@ -395,7 +395,7 @@ static int video_mux_async_register(struct video_mux *vmux,
 
 	vmux->notifier.ops = &video_mux_notify_ops;
 
-	ret = v4l2_async_subdev_nf_register(&vmux->subdev, &vmux->notifier);
+	ret = v4l2_async_nf_register(&vmux->notifier);
 	if (ret)
 		return ret;
 
diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c
index 6bb426a25fe90..4285770fde184 100644
--- a/drivers/media/platform/xilinx/xilinx-vipp.c
+++ b/drivers/media/platform/xilinx/xilinx-vipp.c
@@ -494,7 +494,7 @@ static int xvip_graph_init(struct xvip_composite_device *xdev)
 		goto done;
 	}
 
-	v4l2_async_nf_init(&xdev->notifier);
+	v4l2_async_nf_init(&xdev->notifier, &xdev->v4l2_dev);
 
 	/* Parse the graph to extract a list of subdevice DT nodes. */
 	ret = xvip_graph_parse(xdev);
@@ -512,7 +512,7 @@ static int xvip_graph_init(struct xvip_composite_device *xdev)
 	/* Register the subdevices notifier. */
 	xdev->notifier.ops = &xvip_graph_notify_ops;
 
-	ret = v4l2_async_nf_register(&xdev->v4l2_dev, &xdev->notifier);
+	ret = v4l2_async_nf_register(&xdev->notifier);
 	if (ret < 0) {
 		dev_err(xdev->dev, "notifier registration failed\n");
 		goto done;
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 12b465a16ec1c..bb172cc18998a 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -558,13 +558,24 @@ static int v4l2_async_nf_match_valid(struct v4l2_async_notifier *notifier,
 	return 0;
 }
 
-void v4l2_async_nf_init(struct v4l2_async_notifier *notifier)
+void v4l2_async_nf_init(struct v4l2_async_notifier *notifier,
+			struct v4l2_device *v4l2_dev)
 {
 	INIT_LIST_HEAD(&notifier->waiting_list);
 	INIT_LIST_HEAD(&notifier->done_list);
+	notifier->v4l2_dev = v4l2_dev;
 }
 EXPORT_SYMBOL(v4l2_async_nf_init);
 
+void v4l2_async_subdev_nf_init(struct v4l2_async_notifier *notifier,
+			       struct v4l2_subdev *sd)
+{
+	INIT_LIST_HEAD(&notifier->waiting_list);
+	INIT_LIST_HEAD(&notifier->done_list);
+	notifier->sd = sd;
+}
+EXPORT_SYMBOL_GPL(v4l2_async_subdev_nf_init);
+
 static int __v4l2_async_nf_register(struct v4l2_async_notifier *notifier)
 {
 	struct v4l2_async_connection *asc;
@@ -605,16 +616,13 @@ static int __v4l2_async_nf_register(struct v4l2_async_notifier *notifier)
 	return ret;
 }
 
-int v4l2_async_nf_register(struct v4l2_device *v4l2_dev,
-			   struct v4l2_async_notifier *notifier)
+int v4l2_async_nf_register(struct v4l2_async_notifier *notifier)
 {
 	int ret;
 
-	if (WARN_ON(!v4l2_dev || notifier->sd))
+	if (WARN_ON(!notifier->v4l2_dev == !notifier->sd))
 		return -EINVAL;
 
-	notifier->v4l2_dev = v4l2_dev;
-
 	ret = __v4l2_async_nf_register(notifier);
 	if (ret)
 		notifier->v4l2_dev = NULL;
@@ -623,24 +631,6 @@ int v4l2_async_nf_register(struct v4l2_device *v4l2_dev,
 }
 EXPORT_SYMBOL(v4l2_async_nf_register);
 
-int v4l2_async_subdev_nf_register(struct v4l2_subdev *sd,
-				  struct v4l2_async_notifier *notifier)
-{
-	int ret;
-
-	if (WARN_ON(!sd || notifier->v4l2_dev))
-		return -EINVAL;
-
-	notifier->sd = sd;
-
-	ret = __v4l2_async_nf_register(notifier);
-	if (ret)
-		notifier->sd = NULL;
-
-	return ret;
-}
-EXPORT_SYMBOL(v4l2_async_subdev_nf_register);
-
 static void
 __v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier)
 {
@@ -649,9 +639,6 @@ __v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier)
 
 	v4l2_async_nf_unbind_all_subdevs(notifier);
 
-	notifier->sd = NULL;
-	notifier->v4l2_dev = NULL;
-
 	list_del(&notifier->notifier_entry);
 }
 
@@ -683,6 +670,9 @@ static void __v4l2_async_nf_cleanup(struct v4l2_async_notifier *notifier)
 
 		kfree(asc);
 	}
+
+	notifier->sd = NULL;
+	notifier->v4l2_dev = NULL;
 }
 
 void v4l2_async_nf_cleanup(struct v4l2_async_notifier *notifier)
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
index 7c3e1648a0f49..dc5df557c3b33 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -1205,7 +1205,7 @@ int v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd)
 	if (!notifier)
 		return -ENOMEM;
 
-	v4l2_async_nf_init(notifier);
+	v4l2_async_subdev_nf_init(notifier, sd);
 
 	ret = v4l2_subdev_get_privacy_led(sd);
 	if (ret < 0)
@@ -1215,7 +1215,7 @@ int v4l2_async_register_subdev_sensor(struct v4l2_subdev *sd)
 	if (ret < 0)
 		goto out_cleanup;
 
-	ret = v4l2_async_subdev_nf_register(sd, notifier);
+	ret = v4l2_async_nf_register(notifier);
 	if (ret < 0)
 		goto out_cleanup;
 
diff --git a/drivers/staging/media/deprecated/atmel/atmel-sama5d2-isc.c b/drivers/staging/media/deprecated/atmel/atmel-sama5d2-isc.c
index 58c8c7813e0f9..31b2b48085c59 100644
--- a/drivers/staging/media/deprecated/atmel/atmel-sama5d2-isc.c
+++ b/drivers/staging/media/deprecated/atmel/atmel-sama5d2-isc.c
@@ -507,7 +507,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
 		struct fwnode_handle *fwnode =
 			of_fwnode_handle(subdev_entity->epn);
 
-		v4l2_async_nf_init(&subdev_entity->notifier);
+		v4l2_async_nf_init(&subdev_entity->notifier, &isc->v4l2_dev);
 
 		asd = v4l2_async_nf_add_fwnode_remote(&subdev_entity->notifier,
 						      fwnode,
@@ -523,8 +523,7 @@ static int atmel_isc_probe(struct platform_device *pdev)
 
 		subdev_entity->notifier.ops = &atmel_isc_async_ops;
 
-		ret = v4l2_async_nf_register(&isc->v4l2_dev,
-					     &subdev_entity->notifier);
+		ret = v4l2_async_nf_register(&subdev_entity->notifier);
 		if (ret) {
 			dev_err(dev, "fail to register async notifier\n");
 			goto cleanup_subdev;
diff --git a/drivers/staging/media/deprecated/atmel/atmel-sama7g5-isc.c b/drivers/staging/media/deprecated/atmel/atmel-sama7g5-isc.c
index f10ddee0949e1..020034f631f57 100644
--- a/drivers/staging/media/deprecated/atmel/atmel-sama7g5-isc.c
+++ b/drivers/staging/media/deprecated/atmel/atmel-sama7g5-isc.c
@@ -497,7 +497,7 @@ static int microchip_xisc_probe(struct platform_device *pdev)
 		struct fwnode_handle *fwnode =
 			of_fwnode_handle(subdev_entity->epn);
 
-		v4l2_async_nf_init(&subdev_entity->notifier);
+		v4l2_async_nf_init(&subdev_entity->notifier, &isc->v4l2_dev);
 
 		asd = v4l2_async_nf_add_fwnode_remote(&subdev_entity->notifier,
 						      fwnode,
@@ -513,8 +513,7 @@ static int microchip_xisc_probe(struct platform_device *pdev)
 
 		subdev_entity->notifier.ops = &atmel_isc_async_ops;
 
-		ret = v4l2_async_nf_register(&isc->v4l2_dev,
-					     &subdev_entity->notifier);
+		ret = v4l2_async_nf_register(&subdev_entity->notifier);
 		if (ret) {
 			dev_err(dev, "fail to register async notifier\n");
 			goto cleanup_subdev;
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 09b8b396022e0..dda1ebc34692a 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -1918,7 +1918,7 @@ static int imx_csi_async_register(struct csi_priv *priv)
 	unsigned int port;
 	int ret;
 
-	v4l2_async_nf_init(&priv->notifier);
+	v4l2_async_subdev_nf_init(&priv->notifier, &priv->sd);
 
 	/* get this CSI's port id */
 	ret = fwnode_property_read_u32(dev_fwnode(priv->dev), "reg", &port);
@@ -1944,7 +1944,7 @@ static int imx_csi_async_register(struct csi_priv *priv)
 
 	priv->notifier.ops = &csi_notify_ops;
 
-	ret = v4l2_async_subdev_nf_register(&priv->sd, &priv->notifier);
+	ret = v4l2_async_nf_register(&priv->notifier);
 	if (ret)
 		return ret;
 
diff --git a/drivers/staging/media/imx/imx-media-dev-common.c b/drivers/staging/media/imx/imx-media-dev-common.c
index 67c1b16db6558..46bf717255b3e 100644
--- a/drivers/staging/media/imx/imx-media-dev-common.c
+++ b/drivers/staging/media/imx/imx-media-dev-common.c
@@ -367,7 +367,7 @@ struct imx_media_dev *imx_media_dev_init(struct device *dev,
 
 	INIT_LIST_HEAD(&imxmd->vdev_list);
 
-	v4l2_async_nf_init(&imxmd->notifier);
+	v4l2_async_nf_init(&imxmd->notifier, &imxmd->v4l2_dev);
 
 	return imxmd;
 
@@ -391,7 +391,7 @@ int imx_media_dev_notifier_register(struct imx_media_dev *imxmd,
 
 	/* prepare the async subdev notifier and register it */
 	imxmd->notifier.ops = ops ? ops : &imx_media_notifier_ops;
-	ret = v4l2_async_nf_register(&imxmd->v4l2_dev, &imxmd->notifier);
+	ret = v4l2_async_nf_register(&imxmd->notifier);
 	if (ret) {
 		v4l2_err(&imxmd->v4l2_dev,
 			 "v4l2_async_nf_register failed with %d\n", ret);
diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c
index 2e86f82ad70cd..50f1df09c0a73 100644
--- a/drivers/staging/media/imx/imx6-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx6-mipi-csi2.c
@@ -635,7 +635,7 @@ static int csi2_async_register(struct csi2_dev *csi2)
 	struct fwnode_handle *ep;
 	int ret;
 
-	v4l2_async_nf_init(&csi2->notifier);
+	v4l2_async_subdev_nf_init(&csi2->notifier, &csi2->sd);
 
 	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(csi2->dev), 0, 0,
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
@@ -660,7 +660,7 @@ static int csi2_async_register(struct csi2_dev *csi2)
 
 	csi2->notifier.ops = &csi2_notify_ops;
 
-	ret = v4l2_async_subdev_nf_register(&csi2->sd, &csi2->notifier);
+	ret = v4l2_async_nf_register(&csi2->notifier);
 	if (ret)
 		return ret;
 
diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
index 2f723ad34c2c5..6813c44b71039 100644
--- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
@@ -592,7 +592,7 @@ static int imx8mq_mipi_csi_async_register(struct csi_state *state)
 	unsigned int i;
 	int ret;
 
-	v4l2_async_nf_init(&state->notifier);
+	v4l2_async_subdev_nf_init(&state->notifier, &state->sd);
 
 	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(state->dev), 0, 0,
 					     FWNODE_GRAPH_ENDPOINT_NEXT);
@@ -629,7 +629,7 @@ static int imx8mq_mipi_csi_async_register(struct csi_state *state)
 
 	state->notifier.ops = &imx8mq_mipi_csi_notify_ops;
 
-	ret = v4l2_async_subdev_nf_register(&state->sd, &state->notifier);
+	ret = v4l2_async_nf_register(&state->notifier);
 	if (ret)
 		return ret;
 
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
index dd7dfecb9ef33..ccbb530aa2e23 100644
--- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
@@ -536,7 +536,7 @@ int sun6i_isp_proc_setup(struct sun6i_isp_device *isp_dev)
 
 	/* V4L2 Async */
 
-	v4l2_async_nf_init(notifier);
+	v4l2_async_nf_init(notifier, v4l2_dev);
 	notifier->ops = &sun6i_isp_proc_notifier_ops;
 
 	sun6i_isp_proc_source_setup(isp_dev, &proc->source_csi0,
@@ -544,7 +544,7 @@ int sun6i_isp_proc_setup(struct sun6i_isp_device *isp_dev)
 	sun6i_isp_proc_source_setup(isp_dev, &proc->source_csi1,
 				    SUN6I_ISP_PORT_CSI1);
 
-	ret = v4l2_async_nf_register(v4l2_dev, notifier);
+	ret = v4l2_async_nf_register(notifier);
 	if (ret) {
 		v4l2_err(v4l2_dev,
 			 "failed to register v4l2 async notifier: %d\n", ret);
diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index 146b4fd3c8b52..f31d8babf499c 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -1280,7 +1280,7 @@ static int tegra_channel_init(struct tegra_vi_channel *chan)
 	}
 
 	if (!IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG))
-		v4l2_async_nf_init(&chan->notifier);
+		v4l2_async_nf_init(&chan->notifier, &vid->v4l2_dev);
 
 	return 0;
 
@@ -1880,7 +1880,7 @@ static int tegra_vi_graph_init(struct tegra_vi *vi)
 			continue;
 
 		chan->notifier.ops = &tegra_vi_async_ops;
-		ret = v4l2_async_nf_register(&vid->v4l2_dev, &chan->notifier);
+		ret = v4l2_async_nf_register(&chan->notifier);
 		if (ret < 0) {
 			dev_err(vi->dev,
 				"failed to register channel %d notifier: %d\n",
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index d0bef6626e043..65e364d4033a4 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -146,13 +146,30 @@ void v4l2_async_debug_init(struct dentry *debugfs_dir);
  * v4l2_async_nf_init - Initialize a notifier.
  *
  * @notifier: pointer to &struct v4l2_async_notifier
+ * @v4l2_dev: pointer to &struct v4l2_device
+ *
+ * This function initializes the notifier @asc_entry. It must be called
+ * before adding a subdevice to a notifier, using one of:
+ * v4l2_async_nf_add_fwnode_remote(),
+ * v4l2_async_nf_add_fwnode() or
+ * v4l2_async_nf_add_i2c().
+ */
+void v4l2_async_nf_init(struct v4l2_async_notifier *notifier,
+			struct v4l2_device *v4l2_dev);
+
+/**
+ * v4l2_async_subdev_nf_init - Initialize a sub-device notifier.
+ *
+ * @notifier: pointer to &struct v4l2_async_notifier
+ * @sd: pointer to &struct v4l2_subdev
  *
  * This function initializes the notifier @asc_entry. It must be called
  * before adding a subdevice to a notifier, using one of:
  * v4l2_async_nf_add_fwnode_remote(), v4l2_async_nf_add_fwnode() or
  * v4l2_async_nf_add_i2c().
  */
-void v4l2_async_nf_init(struct v4l2_async_notifier *notifier);
+void v4l2_async_subdev_nf_init(struct v4l2_async_notifier *notifier,
+			       struct v4l2_subdev *sd);
 
 struct v4l2_async_connection *
 __v4l2_async_nf_add_fwnode(struct v4l2_async_notifier *notifier,
@@ -257,21 +274,9 @@ v4l2_async_connection_unique(struct v4l2_subdev *sd);
 /**
  * v4l2_async_nf_register - registers a subdevice asynchronous notifier
  *
- * @v4l2_dev: pointer to &struct v4l2_device
- * @notifier: pointer to &struct v4l2_async_notifier
- */
-int v4l2_async_nf_register(struct v4l2_device *v4l2_dev,
-			   struct v4l2_async_notifier *notifier);
-
-/**
- * v4l2_async_subdev_nf_register - registers a subdevice asynchronous
- *					 notifier for a sub-device
- *
- * @sd: pointer to &struct v4l2_subdev
  * @notifier: pointer to &struct v4l2_async_notifier
  */
-int v4l2_async_subdev_nf_register(struct v4l2_subdev *sd,
-				  struct v4l2_async_notifier *notifier);
+int v4l2_async_nf_register(struct v4l2_async_notifier *notifier);
 
 /**
  * v4l2_async_nf_unregister - unregisters a subdevice
-- 
2.30.2