From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Thu, 30 Mar 2023 09:37:02 +0000 (+0200)
Subject: media: qcom: Initialise V4L2 async notifier later
X-Git-Tag: v6.6-rc1~97^2~184
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=5651bab6890a0c5d126e2559b4aa353bed201e47;p=linux-block.git

media: qcom: Initialise V4L2 async notifier later

Initialise V4L2 async notifier and parse DT for async sub-devices later,
just before registering the notifier. This way the device can be made
available to the V4L2 async framework from the notifier init time onwards.
A subsequent patch will add struct v4l2_device as an argument to
v4l2_async_nf_init().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de> # imx6qp
Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> # rcar + adv746x
Tested-by: Aishwarya Kothari <aishwarya.kothari@toradex.com> # Apalis i.MX6Q with TC358743
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> # Renesas RZ/G2L SMARC
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 006855bf076b..b89e2bb5b505 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -1615,14 +1615,6 @@ static int camss_probe(struct platform_device *pdev)
 	if (!camss->vfe)
 		return -ENOMEM;
 
-	v4l2_async_nf_init(&camss->notifier);
-
-	num_subdevs = camss_of_parse_ports(camss);
-	if (num_subdevs < 0) {
-		ret = num_subdevs;
-		goto err_cleanup;
-	}
-
 	ret = camss_icc_get(camss);
 	if (ret < 0)
 		goto err_cleanup;
@@ -1648,9 +1640,17 @@ static int camss_probe(struct platform_device *pdev)
 		goto err_cleanup;
 	}
 
+	v4l2_async_nf_init(&camss->notifier);
+
+	num_subdevs = camss_of_parse_ports(camss);
+	if (num_subdevs < 0) {
+		ret = num_subdevs;
+		goto err_cleanup;
+	}
+
 	ret = camss_register_entities(camss);
 	if (ret < 0)
-		goto err_register_entities;
+		goto err_cleanup;
 
 	if (num_subdevs) {
 		camss->notifier.ops = &camss_subdev_notifier_ops;
@@ -1691,9 +1691,8 @@ static int camss_probe(struct platform_device *pdev)
 
 err_register_subdevs:
 	camss_unregister_entities(camss);
-err_register_entities:
-	v4l2_device_unregister(&camss->v4l2_dev);
 err_cleanup:
+	v4l2_device_unregister(&camss->v4l2_dev);
 	v4l2_async_nf_cleanup(&camss->notifier);
 
 	return ret;