enable/disable gettys as needed

Scripts/gadget.sh

@@ -8,20 +8,19 @@ if lsmod | grep -q "dwc2"; then
     systemd-cat -t gadget.sh -p info echo "DWC2 module loaded, setting up OTG gadget serial and ethernet"
 else
     systemd-cat -t gadget.sh -p warning echo "DWC2 module missing.  Aborting OTG setup."
+    systemctl disable serial-getty@ttyGS0.service
     exit 1
 fi
 
-
 sudo modprobe libcomposite
 cd /sys/kernel/config/usb_gadget
-# Was the script already run?
 if [ -d "MyGadget" ]; then
     systemd-cat -t gadget.sh -p warning echo "MyGadget already exists.  Aborting OTG setup."
     exit 1
 fi
 
 # Create our new gadget
-sudo mkdir MyGadget
+mkdir MyGadget
 cd MyGadget
 # Add some boilerplate data that the gadget needs
 echo 0x1d6b > idVendor # Linux Foundation’s USB VID. Replace with your own VID if required
@@ -46,6 +45,7 @@ echo "Config 1" > configs/c.1/strings/0x409/configuration
 ###  Remember to create the storage block device first
 ##  cd /root
 ### Example: Make a 256 MB file to act as "USB stick"
+##  Only create it once or it will delete the previous content
 ##  sudo dd if=/dev/zero of=drive.bin bs=1M count=256
 ### Create a VFAT file system on the backing store
 ##  sudo mkfs.vfat drive.bin
@@ -69,3 +69,6 @@ ln -s functions/ecm.usb0 configs/c.1/
 ## USB Device Controller update
 UDC=`ls /sys/class/udc`
 echo $UDC > UDC
+
+# Enable the gettys
+systemctl enable serial-getty@ttyGS0.service