Possible to force ttyUSB2 for Prolink PH-300?

[Ascanio Alba <ascanio alba4 gmail com>]

I have a Prolink PH-300 dongle.

With usbserial.ko, NM/MM probe correctly and use /dev/ttyUSB2
With option.ko, NM/MM probe incorrectly and use /devttyUSB1.
The latter is pretty consistent, but once in a while NM/MM will use ttyUSB2 correctly.
See below when it works.

I can dial and connect with manually with pppd on ttyUSB2 so that is the data port.

Is there a way to "force" the generic(SimTech?) modem plugin to use ttyUSB2

1. Prolink PH-300
ZeroCD: USB id: 0x1e0e / 0xf000

2. After eject /dev/sr0
USB id 0x1e0e / 0x9100

Thanks

### Successful use of ttyUSB2
Bus 001 Device 005: ID 1e0e:9100 Qualcomm / Option 

[90200.852190] usb 1-4: new high speed USB device using ehci_hcd and address 4
[90200.969428] usb 1-4: New USB device found, idVendor=1e0e, idProduct=f000
[90200.969438] usb 1-4: New USB device strings: Mfr=3, Product=2, SerialNumber=4
[90200.969447] usb 1-4: Product: PROLINK 
[90200.969452] usb 1-4: Manufacturer: PROLINK 
[90200.969457] usb 1-4: SerialNumber: 1234567890ABCDEF
[90201.910909] usb 1-4: USB disconnect, address 4
[90202.224048] usb 1-4: new high speed USB device using ehci_hcd and address 5
[90202.346567] usb 1-4: New USB device found, idVendor=1e0e, idProduct=9100
[90202.346577] usb 1-4: New USB device strings: Mfr=2, Product=1, SerialNumber=3
[90202.346585] usb 1-4: Manufacturer: PROLINK 
[90202.346590] usb 1-4: SerialNumber: 1234567890ABCDEF

May 26 12:33:48 tristan kernel: [90366.398155] option 1-4:1.0: GSM modem (1-port) converter detected
May 26 12:33:48 tristan kernel: [90366.405124] usb 1-4: GSM modem (1-port) converter now attached to ttyUSB0
May 26 12:33:48 tristan kernel: [90366.405208] option 1-4:1.1: GSM modem (1-port) converter detected
May 26 12:33:48 tristan kernel: [90366.405424] usb 1-4: GSM modem (1-port) converter now attached to ttyUSB1
May 26 12:33:48 tristan kernel: [90366.405504] option 1-4:1.3: GSM modem (1-port) converter detected
May 26 12:33:48 tristan kernel: [90366.405724] usb 1-4: GSM modem (1-port) converter now attached to ttyUSB2
May 26 12:33:48 tristan modem-manager[1063]: <info>  (ttyUSB1) opening serial port...
May 26 12:34:08 tristan modem-manager[1063]: <info>  (ttyUSB0) opening serial port...
May 26 12:34:28 tristan modem-manager[1063]: <info>  (ttyUSB2) opening serial port...
May 26 12:34:39 tristan modem-manager[1063]: <info>  (ttyUSB2) closing serial port...
May 26 12:34:39 tristan modem-manager[1063]: <info>  (ttyUSB2) serial port closed
May 26 12:34:39 tristan modem-manager[1063]: <info>  (ttyUSB2) opening serial port...
May 26 12:34:39 tristan modem-manager[1063]: <info>  (SimTech): GSM modem /sys/devices/pci0000:00/0000:00:12.2/usb1/1-4 claimed port ttyUSB2
May 26 12:34:40 tristan modem-manager[1063]: <info>  (ttyUSB2) closing serial port...
May 26 12:34:40 tristan modem-manager[1063]: <info>  (ttyUSB2) serial port closed
May 26 12:34:42 tristan modem-manager[1063]: <info>  (ttyUSB1) closing serial port...
May 26 12:34:47 tristan modem-manager[1063]: <info>  (ttyUSB1) serial port closed
May 26 12:34:47 tristan modem-manager[1063]: <info>  (SimTech): GSM modem /sys/devices/pci0000:00/0000:00:12.2/usb1/1-4 claimed port ttyUSB1
May 26 12:35:01 tristan modem-manager[1063]: <info>  (ttyUSB0) closing serial port...
May 26 12:35:06 tristan modem-manager[1063]: <info>  (ttyUSB0) serial port closed
May 26 12:35:06 tristan NetworkManager[909]: <warn> (ttyUSB2): failed to look up interface index
May 26 12:35:06 tristan NetworkManager[909]: <info> WWAN now disabled by management service
May 26 12:35:06 tristan NetworkManager[909]: <info> (ttyUSB2): new GSM/UMTS device (driver: 'option1' ifindex: -1)
May 26 12:35:06 tristan NetworkManager[909]: <info> (ttyUSB2): exported as /org/freedesktop/NetworkManager/Devices/3
May 26 12:35:06 tristan NetworkManager[909]: <info> (ttyUSB2): now managed
May 26 12:35:06 tristan NetworkManager[909]: <info> (ttyUSB2): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
May 26 12:35:06 tristan NetworkManager[909]: <info> (ttyUSB2): deactivating device (reason: 2).
May 26 12:35:06 tristan NetworkManager[909]: <info> (ttyUSB2): device state change: unavailable -> disconnected (reason 'none') [20 30 0]

May 26 12:39:01 tristan NetworkManager[909]: <info> WWAN now enabled by management service
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) starting connection 'SingTel Default'
May 26 12:39:11 tristan NetworkManager[909]: <info> (ttyUSB2): device state change: disconnected -> prepare (reason 'none') [30 40 0]
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) scheduled...
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) started...
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 1 of 5 (Device Prepare) complete.
May 26 12:39:11 tristan modem-manager[1063]: <info>  Modem /org/freedesktop/ModemManager/Modems/0: state changed (registered -> connecting)
May 26 12:39:11 tristan modem-manager[1063]: <info>  Modem /org/freedesktop/ModemManager/Modems/0: state changed (connecting -> connected)
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) scheduled...
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) starting...
May 26 12:39:11 tristan NetworkManager[909]: <info> (ttyUSB2): device state change: prepare -> config (reason 'none') [40 50 0]
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) successful.
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 3 of 5 (IP Configure Start) scheduled.
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 2 of 5 (Device Configure) complete.
May 26 12:39:11 tristan NetworkManager[909]: <info> Activation (ttyUSB2) Stage 3 of 5 (IP Configure Start) started...
May 26 12:39:11 tristan NetworkManager[909]: <info> (ttyUSB2): device state change: config -> ip-config (reason 'none') [50 70 0]