qmi_wwan 1-1.3:1.8: nonzero urb status received: -71 (-71 == EPROTO)

[Gopakumar Choorakkot Edakkunni]

Hi QMI experts,

I have an AC 340U modem for which I periodically monitor the signal
strength using the qmicli below. At times when my signal strength drop
badly down to zero, I see that qmicli spits out the below errors
continuosly. I did a google and saw some discussions around the EPIPE
error, but none around EPROTO. Any thoughts/comments/suggestions would be
very helpful !

qmicli -d </dev/...> --nas-get-signal-info

<logs>
qmi_wwan 1-1.3:1.8: nonzero urb status received: -71 (-71 == EPROTO)
qmi_wwan 1-1.3:1.8: wdm_int_callback - 0 bytes
qmi_wwan 1-1.3:1.8: nonzero urb status received: -71
qmi_wwan 1-1.3:1.8: wdm_int_callback - 0 bytes

Rgds,
Gopa.
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