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media: stm32: dcmi: unregister notifier on probe failure

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commit 084973ebd6 upstream.

dcmi_graph_init() registers the async notifier before dcmi_probe() toggles
the reset line. If reset_control_assert() or reset_control_deassert()
fails afterwards, probe returns through err_cleanup and the driver core
will not call dcmi_remove().

Unregister the notifier before cleaning it up on that error path,
matching the successful remove path and the V4L2 async notifier lifetime
rules.

Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Fixes: d079f94c90 ("media: platform: Switch to v4l2_async_notifier_add_subdev")
Cc: stable@vger.kernel.org
[hverkuil: added Fixes tag]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Myeonghun Pak
2026-08-03 11:15:26 +02:00
committed by Greg Kroah-Hartman
parent 134c979dd7
commit 37ff63c5d7
1 changed files with 1 additions and 0 deletions
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drivers/media/platform/st/stm32/stm32-dcmi.c
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@@ -2077,6 +2077,7 @@ static int dcmi_probe(struct platform_device *pdev)
return 0;
err_cleanup:
v4l2_async_nf_unregister(&dcmi->notifier);
v4l2_async_nf_cleanup(&dcmi->notifier);
err_media_entity_cleanup:
media_entity_cleanup(&dcmi->vdev->entity);