These are Longcheer-based devices, but the vendor ID is different.
We had tagged the X060s' ports in the rules but never updated the
plugin to handle the different vendor ID.
The argument passed to the handler is a GByteArray, not a
GString. Encountered with Option iCON Icera-based devices,
but could also be possible with Sierra devices.
This specifically fixes a regression with Novatel GSM secondary
AT port enablement, where the inital pin check closed the port
before the Novatel plugin could send the command to flip secondary
ports to AT mode.
But it's useful elsewhere too, and simplifies a bunch of the PIN
checking code which had to use various ugly methods to track whether
to close the port or not after checking the PIN.
Some devices (Blackberries via DUN) appear to always return an error
for AT+CREG, which is valid in some cases. If that happens lets also
try AT+CGREG too, which on these devices responds with the correct
packet data registration state.
Instead of returning an unhelpful error when there isn't a second
AT port (which there never will be for Novatel CDMA devices) we should
let the superclass handle the request.
The master device of PCMCIA-provided ports is typically the
last device in the PCMCIA subsystem, because the PCMCIA
controller is usually a PCI device or some other subsystem.
Some devices (ZTE MF110 for example) respond immediately to the unlock
request, but in reality take a bit of time before they are actually
unlocked. Check PIN status a few times after sending the unlock.
Some devices apparently don't like it (even though it's required
in the standards) and since we can deal without it, don't require
+CMEE=1 to complete successfully.
The generic CDMA superclass already checks minimal registration state,
and when some of the additional query_registration_state() subclass checks
were being performed, if the device returned an error (if it didn't support
the subclass' specific registration command like *STATE or ^SYSINFO) the
superclass' registration state checks would be thrown away.
Fix that by specifying the behavior of the subclass'
query_registration_state() methods to ignore most errors and leave the
superclass' registration state intact if a non-critical error occurs.
The next plugin logic was wrong when a previous plugin had already
claimed support for the port and the Generic plugin was next. In
that case, the code failed to call the functions to actually grab
the port.
Otherwise info->cur_plugin is wrong (and therefore we left uncleared
supports tasks in MMPluginBase) when the port isn't supported by
the plugin, but it's parent modem device was supported by the plugin.
Like when all probing of the port fails but one of it's siblings has
already been claimed by a modem; in this case we just drop the port
(so that no other plugin could try to claim it, because only one
plugin is allowed to handle all a modem's ports) but we still need
to tell the parent modem's plugin to clean up the supports task.
If the modem doesn't have two AT ports (so one can be used for AT+CSQ
while connected) get the 1x active pilot's EC/IO and use that for
signal strength.
