> > So this doesn't really match the Sierra layout in qcserial, where the > > QMI interface is documented as interface 8 (but perhaps we have other > > examples of that already). > > > > Do you know what these serial ports are used for? > > You know what, I kind of missed that. This Dell device is not based on > Sierra Wireless, so using the Sierra layout is not a good idea. Let me > try to confirm with the manufacturer the purpose of each interface. Sounds good. > > Just based on the above, perhaps using option and matching on the vendor > > class, while blacklisting interface 1 would be more appropriate? > > Being a Qualcomm based chipset, I believe qcserial would be more appropriate. > I'll send an updated patch, including usb-devices output, once I have > an explanation for all questions. Note that we have other qualcomm based devices being handled by option already. The qcserial driver was intended for a special subset of Gobi modems with a particular interface layout and firmware loading requirements. So unless your device falls in any of those categories, option may still be preferred. Thanks, Johan -- 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