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media: v4l: async: Properly re-initialise notifier entry in unregister

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commit 9537a8425a7a0222999d5839a0b394b1e8834b4a upstream.

The notifier_entry of a notifier is not re-initialised after unregistering
the notifier. This leads to dangling pointers being left there so use
list_del_init() to return the notifier_entry an empty list.

Fixes: b8ec754ae4c5 ("media: v4l: async: Set v4l2_device and subdev in async notifier init")
Cc: <stable@vger.kernel.org> # for 6.6 and later
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sakari Ailus 2024-03-08 15:06:13 +02:00 committed by Greg Kroah-Hartman
parent dde33147c9
commit 87100b0924
1 changed files with 1 additions and 1 deletions
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2
drivers/media/v4l2-core/v4l2-async.c
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@ -639,7 +639,7 @@ __v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier)
v4l2_async_nf_unbind_all_subdevs(notifier);
list_del(&notifier->notifier_entry);
list_del_init(&notifier->notifier_entry);
}
void v4l2_async_nf_unregister(struct v4l2_async_notifier *notifier)