Nozomi devices aren't quite ready when the ports show up, so
we have to keep trying to open the port for a few seconds and
eventually it'll succeed. Should really be fixed in the driver
(ie, don't create the ttys until they can actually be used) but
whatever.
If the modem becomes invalid (it crashes and resets, for example)
the callback-info's modem_destroyed_cb() function will handle
cleanup. Buf if the callback-info's callback does more work than
just returning the result (like simple_state_machine) it could
double-schedule the callback. Don't let that happen.
We need better modem-removal handling, but this fixes a crash for
now.
Some ZTE devices (MF626 for example) will emit the ZPASR unsolicited
response right after MM opens the port, and they will just throw the
init string away. So retry the init string once; the ZTE devices will
see it the second time and continue as normal.
This is the MM version of NM commit 861e9689c513cbd61fa75205a681a69d4ba8236c
0.7 hasn't used spaces for over a year, so this is a pretty safe
change. Some modems just don't like it.
0.7 commit to remove spaces:
commit 0265bfe52dcc93372aff6064e849044ccb72aa1e
Author: Dan Williams <dcbw@redhat.com>
Date: Fri Oct 24 15:15:06 2008 +0000
2008-10-24 Dan Williams <dcbw@redhat.com>
* src/nm-gsm-device.c
- (set_apn): remove erroneous spaces in AT+CGDCONT command (Jerone Young)
gcc will interpret the constant value as a uint32 but
the port's set_property() was taking it as a uint64. Thus
the top 32 bits were probably garbage, and messed up
on big-endian architectures leading to random large
probe delays.
The standard dictates CSQ response strength value to be [0 - 31]
inclusive, and 99 means "unknown" or "no service". Make that
apparent and don't treat 99 as 99% which it clearly isn't. Also,
allow spaces in the CSQ response.
Phones especially don't seem to consistently implement this. For now,
we'll hack it out, but later, we'll want to have a class method for
power-on instead of just a property so that subclasses can decided for
themselves (since they know their hardware better) whether failure
of the power-on command is fatal or not.
Full references prevented destruction of the modem object if
it was unplugged or somehow removed. To fix that using full
references on the modems would require that all usage of
MMCallbackInfo to be aware of the validity of the modem and to
ensure the callback was called whenever the modem became invalid.
That, needless to say, would suck. Since any in-progress calls
can't complete when the modem is invalid anyway, just have the
MMCallbackInfo object return a generic error when the modem goes
away and the call is still in-progress.
Like UMTS vs. GSM, EVDO and 1x are separate networks and technologies
and have separate registration state. You can even be roaming on
EVDO while in your home 1x network. Handle that.
