MC 7455 enumeration

[Bjørn Mork]

On July 30, 2019 5:15:24 PM GMT+02:00, Dan Williams <dcbw at redhat.com> wrote:
>On Mon, 2019-07-29 at 18:38 +0000, Peter Fässberg wrote:
>> Hi,
>> 
>> I have now managed to get my MC 7455 to work very well, but I have
>> some errors logged:
>> 
>> usb 1-1.3: config 1 has an invalid interface number: 8 but max is 4
>> usb 1-1.3: config 1 has an invalid interface number: 10 but max is 4
>> usb 1-1.3: config 1 has no interface number 1
>> usb 1-1.3: config 1 has no interface number 4
>> usb 1-1.3: New USB device found, idVendor=1199, idProduct=9071,
>> bcdDevice= 0.06
>> usb 1-1.3: Product: Sierra Wireless MC7455 Qualcomm® Snapdragon(tm)
>> X7 LTE-A
>> qcserial 1-1.3:1.0: Qualcomm USB modem converter detected
>> qcserial 1-1.3:1.2: Qualcomm USB modem converter detected
>> qcserial 1-1.3:1.3: Qualcomm USB modem converter detected
>> qmi_wwan 1-1.3:1.8: cdc-wdm0: USB WDM device
>> qmi_wwan 1-1.3:1.10: cdc-wdm1: USB WDM device
>> 
>> It complains over interface number 8 and 10, but it still use them.
>> 
>> Do you have any idea about how to get rid of this?
>
>What do you get for:
>
>lsusb -v -d 1199:9071

The warnings are expected and can safely be ignored. Getting rid of them has been suggested. 

See https://linux-usb.vger.kernel.narkive.com/pXEUsj2F/config-x-has-an-invalid-interface-number-y-but-max-is-z


Bjørn