Good day all
We are running ofono 1.29 with a Telit HE910 modem connected via HSIC (USB).
When I suspend the kernel and wake again the following events happen:
gatio.c - read_watcher_destroy_notify
gatchat.c - io_disconnect
- chat_cleanup
- in chat_cleanup chat->command_queue is freed and set to
NULL
Then (I haven't traced the root of this one)
drivers/atmodem/gprs-context.c - at_gprs_activate_primary()
gatchat.c - g_at_chat_send()
In here it fails because command_queue is null
It then continues forever to try and call at_gprs_activate_primary().
I did not trace everything into glib, but I'm assuming that when going to sleep
and then waking removes and then re-adds the ttyACM's for the modem, which
causes the destroy notify.
There are two possible ways to fix the problem. Fix it in ofono to recreate
the command_queue before actually calling at_gprs_activate_primary (which in
the long term should probably be the best fix) or try and prevent - on a driver
level - to not remove the ttyACM's between sleep and resume. The latter would
then not kick of the destroy notify.
Our product would be receiving data calls, so I would like to wake from sleep
and then read the packets on the connection and answer the call. What is the
best solution in the group's opinion?
Kind regards
Christo
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