# ls -l /config/usb_gadget/g1/functions/
drwxr-xr-x    2 root     root             0 Apr 13 15:03 accessory.gs2
drwxr-xr-x    2 root     root             0 Apr 13 15:03 audio_source.gs3
drwxr-xr-x    2 root     root             0 Apr 13 15:03 cser.dun.0
drwxr-xr-x    2 root     root             0 Apr 13 15:03 cser.nmea.1
drwxr-xr-x    2 root     root             0 Apr 13 15:03 diag.diag
drwxr-xr-x    2 root     root             0 Apr 13 15:03 diag.diag_mdm
drwxr-xr-x    2 root     root             0 Apr 13 15:03 ffs.adb
drwxr-xr-x    2 root     root             0 Apr 13 15:03 ffs.mtp
drwxr-xr-x    2 root     root             0 Apr 13 15:03 ffs.ptp
drwxr-xr-x    2 root     root             0 Apr 13 15:03 gsi.dpl
drwxr-xr-x    2 root     root             0 Apr 13 15:03 gsi.rmnet
drwxr-xr-x    2 root     root             0 Apr 13 15:03 gsi.rndis
drwxr-xr-x    3 root     root             0 Apr 13 15:03 mass_storage.usb0
drwxr-xr-x    2 root     root             0 Apr 13 15:03 midi.gs5
drwxr-xr-x    2 root     root             0 Apr 13 15:03 qdss.qdss
drwxr-xr-x    2 root     root             0 Apr 13 15:03 qdss.qdss_mdm
drwxr-xr-x    3 root     root             0 Jan 29  1970 rndis.usb0