Problem when disable GPRS context and try to re-enable it

[Viallard Anthony <viallard@syscom-instruments.com>]

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Hello,

I start a new thread about a bad thing I seen. I can't re-enable a 
previously disabled context.

Here the command to reproduce the issue:

---------------------------
dbus-send --system --type=method_call --print-reply --dest=org.ofono 
/simcom_0/context1 org.ofono.ConnectionContext.SetProperty string:"Activ
e" variant:boolean:true

dbus-send --system --type=method_call --print-reply --dest=org.ofono 
/simcom_0/context1 org.ofono.ConnectionContext.SetProperty string:"Activ
e" variant:boolean:false

dbus-send --system --type=method_call --print-reply --dest=org.ofono 
/simcom_0/context1 org.ofono.ConnectionContext.SetProperty string:"Activ
e" variant:boolean:true
---------------------------

and bellow, the log:

---------------------------
ofonod[10347]: Modem: > AT+CGDCONT=1,"IP","gprs.swisscom.ch"\r
ofonod[10347]: Modem: < \r\nOK\r\n
ofonod[10347]: drivers/atmodem/gprs-context.c:at_cgdcont_cb() ok 1
ofonod[10347]: Modem: > AT+CGDATA="PPP",1\r
ofonod[10347]: Modem: < \r\nCONNECT 115200\r\n
ofonod[10347]: drivers/atmodem/gprs-context.c:at_cgdata_cb() ok 1
ofonod[10347]: drivers/atmodem/gprs-context.c:setup_ppp()
ofonod[10347]: drivers/atmodem/gprs-context.c:ppp_connect()
ofonod[10347]: IP: 10.146.60.102
ofonod[10347]: DNS: 195.186.216.33, 195.186.152.33
ofonod[10347]: src/gprs.c:pri_activate_callback() 0x108698
ofonod[10347]: plugins/udev.c:udev_event() subsystem net add
ofonod[10347]: plugins/udev.c:udev_event() subsystem net finished
ofonod[10347]: plugins/udevng.c:check_modem_list()
ofonod[10347]: 
drivers/atmodem/gprs-context.c:at_gprs_deactivate_primary() cid 1
ofonod[10347]: plugins/udevng.c:remove_device() 
/sys/devices/virtual/net/ppp0
ofonod[10347]: plugins/udev.c:udev_event() subsystem net remove
ofonod[10347]: plugins/udev.c:remove_modem() /devices/virtual/net/ppp0
ofonod[10347]: plugins/udev.c:udev_event() subsystem net finished
ofonod[10347]: drivers/atmodem/gprs-context.c:ppp_disconnect() Reason: 6
ofonod[10347]: Modem: < \r\nNO CARRIER\r\n


ofonod[10347]: drivers/atmodem/gprs-context.c:at_gprs_activate_primary() 
cid 1
ofonod[10347]: src/gprs.c:pri_activate_callback() 0x108698
ofonod[10347]: src/gprs.c:pri_activate_callback() Activating context 
failed with error: Unknown error type
---------------------------

I read the code, added some logs and found the function 
at_chat_send_common() doesn't do his job because chat->command_queue is 
NULL.

I guess chat->command_queue is free and set to NULL in 
chat_cleanup(struct at_chat *chat) but I don't dig more why this 
function is call...

Any ideas ?

Regards,
Anthony Viallard.

-- 
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Viallard Anthony    (+41 024 455 24 82)
[ Embedded System | Software Designer ]
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