umtprd + functions fs Read Error (-64480) v1.3.6

[iabdalkader]

Hi, I'm getting this error when trying to run umtprd with ffs: incoming_packet : Read Error (-64480)!

This is the stripped down config:

loop_on_disconnect 1
storage "/home"  "home folder" "rw"

manufacturer "test"
product "test"
serial "123456"
interface "MTP"

usb_vendor_id   0x1234
usb_product_id  0x5678
usb_class       0x6
usb_subclass    0x1     
usb_protocol    0x1     
usb_dev_version 0x3008

usb_functionfs_mode 0x1
usb_dev_path   "/dev/ffs-mtp/ep0"
usb_epin_path  "/dev/ffs-mtp/ep1"
usb_epout_path "/dev/ffs-mtp/ep2"
usb_epint_path "/dev/ffs-mtp/ep3"
usb_max_packet_size 0x200

And this is the script I use to setup the gadget and start umtprd (basically the umtprd-ffs.sh examples) I run it from /home/

#!/bin/sh

mkdir cfg
mount none cfg -t configfs

mkdir cfg/usb_gadget/g1
cd cfg/usb_gadget/g1

mkdir configs/c.1

mkdir functions/ffs.mtp

mkdir strings/0x409
mkdir configs/c.1/strings/0x409

echo 0x0100 > idProduct
echo 0x1D6B > idVendor

echo "01234567" > strings/0x409/serialnumber
echo "Viveris Technologies" > strings/0x409/manufacturer
echo "The Viveris Product !" > strings/0x409/product

echo "Conf 1" > configs/c.1/strings/0x409/configuration
echo 120 > configs/c.1/MaxPower

ln -s functions/ffs.mtp configs/c.1

mkdir /dev/ffs-mtp
mount -t functionfs mtp /dev/ffs-mtp

# Start the umtprd service
umtprd > /home/umtp_log 2>&1 &

cd /

sleep 1

# enable the usb functions
ls /sys/class/udc/ > /home/cfg/usb_gadget/g1/UDC

dmesg output on the host when the device is connected:

[ 2138.381204] usb 1-6: new high-speed USB device number 39 using xhci_hcd
[ 2138.398729] usb 1-6: New USB device found, idVendor=1d6b, idProduct=0100, bcdDevice= 4.19
[ 2138.398735] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2138.398738] usb 1-6: Product: The Viveris Product !
[ 2138.398741] usb 1-6: Manufacturer: Viveris Technologies
[ 2138.398743] usb 1-6: SerialNumber: 01234567

The output from running mtpfs on the host:

Listing raw device(s)
Device 0 (VID=1d6b and PID=0100) is UNKNOWN in libmtp v1.1.17.
Please report this VID/PID and the device model to the libmtp development team
   Found 1 device(s):
   1d6b:0100 @ bus 1, dev 39
Attempting to connect device
error returned by libusb_claim_interface() = -6LIBMTP PANIC: Unable to initialize device
Unable to open raw device 0

I have also attached the umtprd debug output (compiled with -DDEBUG)... Am I doing anything wrong ? Please let me know if I can help debug this better.
umtp_log.txt

[iabdalkader]

Hi I just saw issue #27 and un-commenting the buffers fixes it. I'm Not using an iMX based hardware, maybe the defaults should be lower since this seems to be a general issue.. Anyway, thanks and sorry for the noise!