Describe the bug

The struct tbs_flags contains information about pending notifications and states for each client. The _changed flags for notifications are set only if a client is subscribed to changes, at the point in time where the change happens.

Technically, however unlikely, a client may unsubscribe for changes. This can be determined by the cfg_changed functions like current_calls_cfg_changed. However in those functions, any pending changes are not cleared, which means that pending notifications in notify_handler_cb will continuously try to be sent, until the device re-subscribes or disconnects. Additionally, the try_change_dialing_call_to_alerting may never succeed due to this.

The solution is probably to just cleared the _changed bits for that client when it unsubscribes.

Regression

• This is a regression.

Steps to reproduce

N/A

Relevant log output

N/A

Impact

Annoyance – Minor irritation; no significant impact on usability or functionality.

Environment

No response

Additional Context

No response