Comment 12 for bug 27833

And as always one find a simplier solution when one is done :)
Install the midisport-firmware-package

Change the following in the /etc/udev/roles.d/85-midisport-firmware.rules:
Within the brackets on each rule, add -D $env{DEVNAME} within the brackets.

Example for the Midisport 2x2 rule:
# MidiSport 2x2
ACTION=="add", SUBSYSTEM=="usb_device", ATTRS{idVendor}=="0763", ATTRS{idProduct}=="1001", RUN+="/sbin/fxload -s /lib/firmware/maudio/MidiSportLoader.ihx -I /lib/firmware/maudio/MidiSport2x2.ihx"

Shall be change to:
# MidiSport 2x2
ACTION=="add", SUBSYSTEM=="usb_device", ATTRS{idVendor}=="0763", ATTRS{idProduct}=="1001", RUN+="/sbin/fxload -s /lib/firmware/maudio/MidiSportLoader.ihx -I /lib/firmware/maudio/MidiSport2x2.ihx -D $env{DEVNAME}"

I add a modified rules-file with no guarantee what so ever. This is the small matter left before you have midi-support.