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+What: /config/usb-gadget/gadget/functions/midi.name
+Date: Nov 2014
+KernelVersion: 3.19
+Description:
+ The attributes:
+
+ index - index value for the USB MIDI adapter
+ id - ID string for the USB MIDI adapter
+ buflen - MIDI buffer length
+ qlen - USB read request queue length
+ in_ports - number of MIDI input ports
+ out_ports - number of MIDI output ports