Comment 371 for bug 446146

Bruno wrote:
> watch -n1 sudo rmmod usb-storage

In recent kernel versions you could also try to use the usb_storage module parameter quirks:

sudo rmmod usb_storage && sudo modprobe usb_storage quirks=12d1:1446:i

This prevents just your Huawei Modem from beeing detected as a storage device (in my case the E1762).