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<p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have sometimes an issue during the association cdc-wdm/wwan.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I work with kernel 4.1.10, Debian 7.9 and two Sierra Wireless cards MC7304.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Firmware for sierra cards is : SWI9X15C_05.05.58.00 r27038 carmd-fwbuild1 2015/03/04 21:30:23.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">MC7304 are configured to expose only one cdc-wdm interface (but the issue is also seen with configuration 7 and two cdc-wdm for each card) :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">AT!UDUSBCOMP?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">!UDUSBCOMP: 6<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">AT!UDUSBCOMP=?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">6 - DM NMEA AT QMI SUPPORTED<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">7 - DM NMEA AT RMNET1 RMNET2 RMNET3 SUPPORTED<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">During boot, the second card is linked to wwan0 instead of wwan1 :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.438764] usb 1-1.4.2: new high-speed USB device number 6 using ehci-pci<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.533405] usb 1-1.4.2: config 1 has an invalid interface number: 8 but max is 3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.533413] usb 1-1.4.2: config 1 has no interface number 1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.534973] usb 1-1.4.2: New USB device found, idVendor=1199, idProduct=68c0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.534981] usb 1-1.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.534986] usb 1-1.4.2: Product: MC7304<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.534991] usb 1-1.4.2: Manufacturer: Sierra Wireless, Incorporated<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.549452] usbcore: registered new interface driver usbserial<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.549484] usbcore: registered new interface driver usbserial_generic<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.549540] usbserial: USB Serial support registered for generic<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.556272] usbcore: registered new interface driver option<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.556624] usbserial: USB Serial support registered for GSM modem (1-port)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.557058] option 1-1.4.2:1.0: GSM modem (1-port) converter detected<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.557605] usb 1-1.4.2: GSM modem (1-port) converter now attached to ttyUSB0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.557687] option 1-1.4.2:1.2: GSM modem (1-port) converter detected<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.558070] usb 1-1.4.2: GSM modem (1-port) converter now attached to ttyUSB1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.558423] option 1-1.4.2:1.3: GSM modem (1-port) converter detected<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.559119] usb 1-1.4.2: GSM modem (1-port) converter now attached to ttyUSB2<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.577940] usbcore: registered new interface driver cdc_wdm<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.583464] qmi_wwan 1-1.4.2:1.8: cdc-wdm0: USB WDM device<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.583971] qmi_wwan 1-1.4.2:1.8 wwan0: register 'qmi_wwan' at usb-0000:00:1d.0-1.4.2, WWAN/QMI device, d2:8d:ab:fb:d6:15<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 4.584372] usbcore: registered new interface driver qmi_wwan<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.858728] usb 1-1.4.4: new high-speed USB device number 8 using ehci-pci<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.951664] usb 1-1.4.4: config 1 has an invalid interface number: 8 but max is 3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.951676] usb 1-1.4.4: config 1 has no interface number 1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.952401] usb 1-1.4.4: New USB device found, idVendor=1199, idProduct=68c0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.952412] usb 1-1.4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.952420] usb 1-1.4.4: Product: MC7304<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.952427] usb 1-1.4.4: Manufacturer: Sierra Wireless, Incorporated<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.953521] option 1-1.4.4:1.0: GSM modem (1-port) converter detected<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.953791] usb 1-1.4.4: GSM modem (1-port) converter now attached to ttyUSB3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.954114] option 1-1.4.4:1.2: GSM modem (1-port) converter detected<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.954382] usb 1-1.4.4: GSM modem (1-port) converter now attached to ttyUSB4<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.954751] option 1-1.4.4:1.3: GSM modem (1-port) converter detected<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.955121] usb 1-1.4.4: GSM modem (1-port) converter now attached to ttyUSB5<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.955902] qmi_wwan 1-1.4.4:1.8: cdc-wdm1: USB WDM device<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[ 9.956448] qmi_wwan 1-1.4.4:1.8 wwan0: register 'qmi_wwan' at usb-0000:00:1d.0-1.4.4, WWAN/QMI device, d2:8d:ab:fb:d6:15<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">More information:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ls -l /sys/class/net/wwan*<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">lrwxrwxrwx 1 root root 0 mai 10 11:18 /sys/class/net/wwan0 -> ../../devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.8/net/wwan0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ls -l /sys/class/usbmisc/cdc-wdm*<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">lrwxrwxrwx 1 root root 0 mai 10 11:18 /sys/class/usbmisc/cdc-wdm0 -> ../../devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.2/1-1.4.2:1.8/usbmisc/cdc-wdm0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">lrwxrwxrwx 1 root root 0 mai 10 11:18 /sys/class/usbmisc/cdc-wdm1 -> ../../devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.8/usbmisc/cdc-wdm1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I really have no idea what the problem is.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Another information : this is only seen when SIM cards and antennas (for both MC7304) are inserted and plugged.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for your help.<o:p></o:p></span></p>
</div>
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