Greg KH wrote:
Yes. And then it's a little bit tricky: you have to tell the usb_serial
driver framework that this other interface needs to be used, rather than
supplied serial->interface (which is the master interface). You probably
can simply replace serial->interface, but I'm not sure if such a thing is
allowed.
Sorry, but no, that is not currently allowed. But there are ways around
it, see the cdc-acm driver for details, as it does it for some devices.
I had a look at cdc-acm, and the only device specific thing that it does
is hardcoding interface numbers for some broken modems which have no CDC
union descriptor, which is exactly what we're trying to avoid. Is there
something else I missed?
Changing the interface in probe() would be possible if
usb_serial_probe() would set its interface pointer to serial->interface
603 id = usb_match_id(interface, type->id_table);
604 retval = type->probe(serial, id);
here.
605 module_put(type->driver.owner);
Alex
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