Modem kernel driver changes from cdc_mbim to qmi_wwan after suspend/resume?

[Lars Melin]

On 12/19/2019 17:05, Aleksander Morgado wrote:
> Hey Bjørn & all,
> 
> I wonder if you have any idea why this issue is happening?
> https://gitlab.freedesktop.org/mobile-broadband/ModemManager/issues/165#note_368404
> 
> We can see how the kernel driver reported as managing the device that
> owns the cdc-wdm port changes from cdc_mbim (original one after boot)
> to qmi_wwan (after a suspend/resume cycle). This makes ModemManager
> attempt QMI probing instead of MBIM probing on the port, and that
> fails, so the modem is no longer used after the suspend/resume cycle.
> 
> Any hint?
> 

Can only be one reason, the card has been configured to have both qmi 
interface and mbim interface in the composition.