option: Add support for Quectel EP06

[Johan Hovold <johan@kernel.org>]

On Sun, Feb 04, 2018 at 07:24:22PM +0100, Bjørn Mork wrote:
> Johan Hovold <johan@kernel.org> writes:

> >> IIRC I considered just dumping the BIT(x) into the .driver_info but
> >> then we'd only have 16 bits for each of send_setup and reserved on 32-
> >> bit arches and I wasn't sure that was enough.  I've seen some devices
> >> with lots of interfaces.  But doing it this way might have been clearer
> >> than a sidecar struct like option_blacklist_info.
> >
> > Yeah, we should probably consider moving over to something like that.
> > 16 bits would at least be enough for the devices we currently have
> > blacklists for.
> 
> Yes, I think the current driver documents pretty well that we don't need
> backlists for high interface numbers.
> 
> Checking the devices I have ever used, the only ones I found with
> interface numbers higher than 16 were the Sierra Wireless modems of the
> MDM9200/MDM9600 generation.  THe used 19 and 20 for two of their
> QMI/RMNET functions.  But they are handled by the qcserial driver, so
> that's not an issue wrt option.
> 
> I say go for the simple bitmasks!

Great, thanks for the feedback.

> You might also consider a general blacklist for stuff like ADB which
> always need blacklisting.  By now, Google owns ff/42/xx whether you like
> it or not.

Good point.

I won't be able to look at this for another few weeks myself, but will
try to come with some fairly compact notation for this unless someone
beats me to it.

Thanks,
Johan
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