Hi Guillaume,

>> There is no concept of attachment in CDMA, so I'd prefer we not do it
>> this way.  Can't we simply check the current netreg atom status here?
> 
> Fine for me. Then we should also create a new D-Bus error message like:
> __ofono_error_not_registered().
> 

That sounds fine to me.

<snip>

>> It seems to me that this is way too complicated.  All you want is to
>> check the netreg status before trying to set powered.  If we lose netreg
>> when the connection is active, then the regular cdma-connman
>> notification procedures would apply.
> 
> Once we lost netreg, what are we supposed to do?
> cdma-netreg atom will signal "Status" property has changed.
> Is that up to ConnMan to deactivate the data call in checking the
> cdma-netreg "Status" property equal to "unregistered"?

Ah, so that's what you want to accomplish.  This wasn't clear from your
patch.  You have two options here:

- Rely on the modem to drop the data connection and have the
cdma-connman driver notify us appropriately.  The mechanism would be
similar to ofono_gprs_context_deactivated.

- In addition to above, force the Powered property to False when the
registration is lost.  In which case you would need the status watches.

Regards,
-Denis