Shrirang Bagul <shrirang.bagul@xxxxxxxxxxxxx> writes: > Dell Wireless 5819/5818 devices are re-branded Sierra Wireless MC74 > series modems which will by default boot with vid 0x413c and pid's > 0x81cf, 0x81d0, 0x81d1,0x81d2. Along with qcserial, these modems support > qmi_wwan on the usb interface #12. NAK, Interace #12 is MBIM, as shown by the device descriptors. Please provide those descriptors and you will see that this interface is clearly a CDC MBIM class interface. Yes, I know these modems probe the control protocol so that you can make QMI work on an MBIM control interface by sending it a QMI request as the first messsage. This is still wrong, abusing a quirky firmware feature. You need to reconfigure the modem for QMI using the Sierra specific AT command or QMI request (tunneled in MBIM!) to properly switch it to QMI mode, which will appear as a vendor specific interface number 8 (and 10 if you enable both QMI functions). Bjørn -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
