[v2,26/31] media: omap3isp: Initialise V4L2 async notifier later

Commit Message

Sakari Ailus May 16, 2023, 9:55 a.m. UTC

Initialise V4L2 async notifier and parse DT for async sub-devices later,
just before registering the notifier. This way the V4L2 device has been
registered before initialising the notifier which makes it possible to
use it for debug prints.

Signed-off-by: Sakari Ailus <[e-mail]>
---
 drivers/media/platform/ti/omap3isp/isp.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

Patch

diff --git a/drivers/media/platform/ti/omap3isp/isp.c b/drivers/media/platform/ti/omap3isp/isp.c
index 73d5084dce8b9..39768684a6455 100644
--- a/drivers/media/platform/ti/omap3isp/isp.c
+++ b/drivers/media/platform/ti/omap3isp/isp.c
@@ -2002,6 +2002,7 @@  static void isp_remove(struct platform_device *pdev)
 	struct isp_device *isp = platform_get_drvdata(pdev);
 
 	v4l2_async_nf_unregister(&isp->notifier);
+	v4l2_async_nf_cleanup(&isp->notifier);
 	isp_unregister_entities(isp);
 	isp_cleanup_modules(isp);
 	isp_xclk_cleanup(isp);
@@ -2011,7 +2012,6 @@  static void isp_remove(struct platform_device *pdev)
 	__omap3isp_put(isp, false);
 
 	media_entity_enum_cleanup(&isp->crashed);
-	v4l2_async_nf_cleanup(&isp->notifier);
 
 	kfree(isp);
 }
@@ -2295,13 +2295,8 @@  static int isp_probe(struct platform_device *pdev)
 
 	mutex_init(&isp->isp_mutex);
 	spin_lock_init(&isp->stat_lock);
-	v4l2_async_nf_init(&isp->notifier);
 	isp->dev = &pdev->dev;
 
-	ret = isp_parse_of_endpoints(isp);
-	if (ret < 0)
-		goto error;
-
 	isp->ref_count = 0;
 
 	ret = dma_coerce_mask_and_coherent(isp->dev, DMA_BIT_MASK(32));
@@ -2433,6 +2428,12 @@  static int isp_probe(struct platform_device *pdev)
 
 	isp->notifier.ops = &isp_subdev_notifier_ops;
 
+	v4l2_async_nf_init(&isp->notifier);
+
+	ret = isp_parse_of_endpoints(isp);
+	if (ret < 0)
+		goto error_register_entities;
+
 	ret = v4l2_async_nf_register(&isp->v4l2_dev, &isp->notifier);
 	if (ret)
 		goto error_register_entities;
@@ -2443,6 +2444,7 @@  static int isp_probe(struct platform_device *pdev)
 	return 0;
 
 error_register_entities:
+	v4l2_async_nf_cleanup(&isp->notifier);
 	isp_unregister_entities(isp);
 error_modules:
 	isp_cleanup_modules(isp);
@@ -2452,7 +2454,6 @@  static int isp_probe(struct platform_device *pdev)
 	isp_xclk_cleanup(isp);
 	__omap3isp_put(isp, false);
 error:
-	v4l2_async_nf_cleanup(&isp->notifier);
 	mutex_destroy(&isp->isp_mutex);
 error_release_isp:
 	kfree(isp);