There are some cases where flashing the primary port doesn't work
either due to stupid modem firmware or crappy kernel drivers. So
if we have a secondary port, try sending the PDP deactivation
command to the secondary port first, and if that fails send it
to the primary port after the primary port gets flashed. This
increases the chances that the +CGACT request will be successful.
Some modems (Huawei, ZTE) don't like +CGACT on the secondary port,
but when that fails, the code falls back to previous behavior of
flashing and sending CGACT to the primary port.
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.
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.
A modem is now only exported to D-Bus when both of the following are true:
1) the modem is valid
2) all ports the modem provides have been handled by appropriate plugins
This ensures that all the modem's ports are completely ready before
any clients can do anything with it. In the case of CDMA modems with
QCDM ports, this allows the QCDM ports to be detected before exporting
the modem. Since the QCDM detection comes after AT probing, previously
this resulted in a CDMA modem getting exported to clients before we had
a QCDM port to query for registration status.
Some modems (Huawei E1552) appear to have problems with auto registration
in some circumstances that we don't yet fully understand, such that when
AT+COPS=0 is sent they never end up registering with the correct network.
As a minor workaround, if the modem is already registered with a provider
and the user hasn't specified manual registration, don't set auto
registration but let the modem figure it out itself.
See (bgo #591047) for more details.
Assume (for now) that devices that respond to AT+CPIN without an
error are GSM devices. This may not be 100% true as some devices
in Asia (where CDMA devices use RUIMs which are basically SIMs) support
+CPIN for unlocking the RUIM, but since CDMA devices more consistently
implement AT+GCAP and ATI than we should be safe for a while.
This should solve problems with users who's providers are EVDO
only and thus the device isn't in 1X mode, but who's modems
don't set anything meaningful for CAD or CSS when the 1X radio
isn't registered. Previously, MM would just spin thinking it
wasn't registered when trying to connect.
This was mostly found with AnyDATA, Huawei, and some ZTE devices
from Russia and India.
