On Fri, Sep 27, 2019 at 07:44:08PM +0200, Bastien Nocera wrote: > On Fri, 2019-09-27 at 19:38 +0200, Greg KH wrote: > > What does the usb descriptors for the device look like? Is it only > > the > > "default" control endpoint and no interfaces? What does the output > > of > > 'usbdevices' show for the device? > > The device in question can be an iPhone, an iPod Classic/Nano, or an > iPad, amongst others, and they usually have useful interfaces, such as > mass storage for the older ones, or ethernet, PTP, etc. Ah. Then why do you have to do this from a kernel driver? Why can't you do this from userspace? > > Normally you just bind to the "default" interface for the device, and > > all is good, there should be a few other drivers in the tree that do > > this, but I can't think of one off the top of my head at the moment. > > All the interfaces (in the different configurations) are used for > something in the case of the iPhone 6S I'm trying to use. > > I've attached the output of "lsusb -v" for the device below. What about interface "9", the "Apple USB Multiplexor"? What driver binds to that thing? It's a vendor-specific protocol, so there shouldn't be any class driver assigned to it, unlike most of the other interfaces. thanks, greg k-h
