[Bug 216630] config 1 has an invalid interface number: 2 but max is 1

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216630

--- Comment #2 from Artem S. Tashkinov (aros@gmx.com) ---
(In reply to Alan Stern from comment #1)
> These messages indicate that the device's firmware doesn't conform to the
> USB specification.  You can see the problem in the lsusb output for Port 6
> Dev 3.  The two entries say "If 0" and "If 2".  But the USB spec says that
> interface numbers must be consecutive (starting at 0).
> 
> It's a harmless error.

Thanks a lot for the explanation!

Since these messages can be seen at: dmesg -t --level=alert,crit,err,emerg,warn

is is it possible to decrease their level to e.g. notice or info?

I've google for it and there are literally hundreds of affected systems. I
don't think it's worth alerting the use to something they are unable to fix or
get fixed.

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