On Wed, Sep 12, 2018 at 6:32 PM Lars Melin <larsm17@xxxxxxxxx> wrote: > You have chosen a platform which has limited usb resources and want to > solve that problem by adjusting the device driver? No, you asked for a good reason for why disabling and not just ignoring an interface makes sense, and I think that supporting multiple EP06 on platforms with limited endpoints qualifies as a reason. My motivation behind this patch and modifying the driver, is to make the driver work with the different options/combinations supported by the modem. The platforms I am working on merely triggered the error and inspired the change. > Why don't you just unbind those interfaces which you are not using and > which are eating up your usb resources? As far as I know, unbinding interfaces from the driver does not free up the memory allocated to the interface by/on the USB controller. I also tried, just in case, and the output from lsusb is the same regardless of bind/unbind. Btw, the patch for the QMI driver has been accepted, since you mentioned that driver earlier. So the assumption about interface four is removed from there. BR, Kristian
